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U.S. DEPARTMENT OF THE INTERIOR
U.S. GEOLOGICAL SURVEY
The texture of surficial sediments in central Long Island Sound off Milford, Connecticut
by
Poppe, L.J. 1 , Taylor, B.B. 1 , R.N. Zajac2 , Lewis, R.S. 3 , Blackwood, Dann1 , and DiGiacomo-Cohen, M.L. 3
Open-File Report 96-14
This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards (or with the North American Stratigraphic Code). Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
1 Marine and Coastal Geology Program, USGS, Quissett Laboratories, Woods Hole, MA 025432 University of New Haven, 300 Orange Avenue, West Haven, CT 065163 Long Island Sound Resource Center, Connecticut Geological and Natural History Survey, Avery Point Groton, CT 06340
ABSTRACT
Grain-size analyses were performed on 76 samples from central Long Island Sound. The relative grain-size frequency distributions and related statistics are reported herein. Descriptions of the benthic character from video tapes and still camera photographs of the bottom at these stations, and 35 others, are also presented.
Gravelly sediments occur in the shallow northwestern part of the study area and around Stratford Shoal Middle Ground. These and other lithologies occur in bands that progressively fine toward the deeper parts of the study area where clayey silts and sand-silt- clays dominate.
INTRODUCTION
The purpose of this study was to determine the grain-size distributions and associated statistical parameters of the surficial sediment samples from central Long Island Sound off Milford, Connecticut. These grain-size data, which help to ground- truth a pre-existent sidescan sonar survey (Poppe and others, 1995a; Twichell and others, in press), will eventually be used to describe the sedimentary processes active in this portion of central Long Island Sound. Other potential uses for these textural data include benthic biologic studies that evaluate faunal distributions and relate them to habitats (Zajac and others, 1995), and geochemical studies involving the distribution, transport and deposition of pollutants (Moffett and others, 1994).
STUDY AREA
Long Island Sound is a large (about 182 km long by a maximum of 32 km wide) estuary located between Connecticut and Long Island off the southern coast of new England. The Sound is underlain along the Connecticut coast north of the study area by Paleozoic granitic and gneissic rocks of the Appalachian orogen (Rodgers, 1985; Needell and others, 1987; Lewis and Needell, 1987). Coastal- plain strata of Late Cretaceous age unconformably overlie the bedrock at places beneath the Sound and along the north shore of Long Island, New York (Fuller, 1914; Grim and others, 1970).
Late Wisconsinan-age glaciation extended across the Sound to form the Ronkonkoma and Harbor Hill-Roanoke Point Moraines on Long Island (Donner, 1964; Mills and Wells, 1974; Sirkin, 1982). Less prominent recessional moraine segments have also been recognized along the coast of Connecticut and beneath northern Long Island Sound (Flint, 1971; Goldsmith, 1982; Stone and Borns, 1986; Poppe and others, I995a,b). After the final retreat of the ice from the Long Island Sound basin, glacial Lake Connecticut formed in the depression behind the moraines on Long Island. Varved lake clays and, along the northern shore, deltaic complexes dominated sedimentation and together are responsible for the thick lacustrine section evident in seismic records (Lewis and Stone, 1991; Stone and others, 1992; Stone and Schafer, in press). The lake level
gradually lowered due to erosion at the spillway until the lake bed was subaerially exposed. Fluvial processes incised the exposed lake bed as streams ran down from high ground on either side of the Sound to join a central river which ran down the axis.
The Holocene eustatic rise flooded the basin creating Long Island Sound. Finer-grained hemipelagic sediments have accumulated in the quieter, lower energy areas of the western Sound; tidal and storm currents, as evidenced by patterns of erosion, reworking, and transport, dominate in shallow areas and the eastern Sound.
A much more detailed discussion of the geological history of Long Island Sound has been published by Lewis and Stone (1991).
METHODS
Surficial sediment samples and bottom photographs were attempted at 110 locations during April-May and August, 1995 cruises aboard the RV John Dempsey using a Van Veen grab sampler (Figs. 1 and 2) . This grab sampler was equipped with Osprey video and still camera systems; the video system was attached to an 8 mm video cassette recorder. These photographic systems were used to appraise intra-station bottom variability and to observe boulder fields and bedrock outcrop areas where sediment samples could not be collected (Appendix A) . Turbid bottom conditions during the August cruise decreased visibility and degraded the quality of the bottom photography from this cruise. The turbid conditions were related primarily to biological activity throughout the water column, resuspension of organic-rich detritus by tidal currents, and to the presence of a thick (up to 1 m) benthic nepholoid layer. Because of these murky conditions, the still photographs and video from this cruise were only used to describe the benthic character at the textural station locations occupied solely during the August cruise (Stations MIL-92 through MIL-103).
The 0-2 cm interval in the surficial sediments was subsampled from the grab sampler; these samples were frozen and stored for later analysis. Navigation was performed using a differential Global Satellite Positioning system.
A total of 76 samples were collected for textural analysis. The samples were thawed and visually inspected in the laboratory. If the sample contained gravel, the entire sample was analyzed. If the sample was composed of only sand, silt, and clay, an approximately 50 gram (wet), representative split was analyzed. The sample to be analyzed was placed in preweighed 100 ml beaker, weighed, and dried in a convection oven set at 75 °C. When dried, the samples were placed in a desiccator to cool and then reweighed. The decrease in weight due to water loss was used to correct for salt; salinity was assumed to be 20 °/oo. The weight of the sample and beaker less the weight of the beaker and the salt correction gave the sample weight.
The samples were disaggregated and then wet sieved through a 62 jLtm (40) sieve using distilled water to separate the coarse- and fine-fractions. The fine fraction was sealed in a Mason jar and
Figure 1.
Index map showing t
he location o
f the study area (h
atch
ed polygon)
. Map al
so
shows th
e locations of
other sidescan sonar and sampling surveys (o
pen
poly
gons
) being
completed as part of
this series (T
wich
ell
and ot
hers
, 1995;
Popp
e and ot
hers
, 1995a; Po
ppe
and ot
hers
, 1995b; Twichell and ot
hers
, in
pr
ess)
an
d th
e major morainal co
mple
xes.
73°0
0'W
72°4
0'W72
°20'W
72°0
0'W
CO
NN
EC
TIC
UT
NE
W
YO
RK
NORW
ALK
ISLA
ND
S SU
RVE
Y
10 K
ILO
MET
ERS
i
4I°2
0'N
4I°0
0'N
Figure 2. Map of central Long Island Sound off Milford, Connecticut showing the station locations. Stations where surficial sediment samples and bottom photographs were collected are shown as solid circles. Stations where only bottom photographs or biological samples were taken are shown as open circles.
41°12'N73°8'W 73°6'W 73°4'W 73°2'W 73°W 72°58'W
41°10'N
41°8'N
41°6'N
41°4'N
41°2'N
41°N
1 KILOMETERS
STRATFORD POINT
-j- STRATFORD StjeAL
MIDDLE GROUND
MILFORD SURVEY
LONG SLAND SOUND
reserved for analysis by Coulter Counter (Shideler, 1976). The coarse fraction was washed and reintroduced into the preweighed beaker. The coarse fraction w.as dried in the convection oven at about 75 °C and weighed. The weight of the coarse (greater than 62 /zm) fraction is equal to the weight sand plus gravel. The weight of the fines (silt and clay) can also be calculated by subtracting the coarse weight from the sample weight. The coarse fraction was dry sieved through a 2.0 mm (-10) sieve to separate the sand and gravel. The size distribution within the gravel fraction was determined by sieving. Because biogenic carbonates commonly form in situ, they are not representative of the depositional environment from a textural standpoint. Therefore, bivalve shells and other biogenic debris greater than 1.0 mm (00) were manually removed from the samples and the weights corrected to mitigate this source of error.
If the sand fraction contained more than 16 grams of material (enough to run the analysis twice), a rapid sediment analyzer (Schlee, 1966) was used to determine the sand distribution. If less than 16 grams of sand were available, this fraction was dry sieved using a mechanical shaker.
The fine fraction was analyzed by Coulter Counter; storage in the Mason jars prior to analysis never exceeded five days. The gravel, sand, and fine fraction data were processed by computer to generate the distributions, statistics, and data base (Poppe and others, 1985). One limitation of using a Coulter Counter to perform fine fraction analyses is its ability to detect only those particles for which it has been calibrated. Calibration for this study allowed us to determine the distribution down to 0.72 nm. or about two-thirds of the 110 fraction. Because clay particles finer than this diameter and all of the colloidal fraction were not determined, a slight decrease in the 110 fraction is present in the size distributions (Appendix B).
RESULTS AND COMMENTS
Sample locations, water depths, and brief comments on thebottom photography are presented in Appendix A. The relativefrequency distributions of the grain-size analyses are presented inAppendix B and the related statistics and verbal equivalents arepresented in Appendix C. Size classifications are based on themethod proposed by Wentworth (1929) ; the statistics were calculatedusing the method of moments (Folk, 1974). The verbal equivalentswere calculated using the inclusive graphics statistical method(Folk, 1974) and are based on the nomenclature proposed by Shepard(1954) .
Gravelly sediments were confined to two shallow areas: the northwestern part of the study area south of Stratford Point (i.e. MIL-1, MIL-5) and to the west-central part of the study area surrounding Stratford Shoal Middle Ground (i.e. MIL-51, MIL-53, MIL-57, MIL-58). These gravelly sediments range from very poorly to extremely poorly sorted and primarily fine-skewed and
leptokurtic. Boulders were observed at two of the stations around Stratford Shoal Middle Ground (MIL-50 and MIL-78). The rocks at these stations were overgrown by hydrozoans and, to a lesser extent, sponges.
The gravelly sediments progressively grade into bands of sand and finer-grained lithologies as water depth increases. The sands are poorly to very poorly sorted, strongly to fine-skewed, and leptokurtic (i.e. MIL-12, MIL-21, MIL-29). The silty sands and sandy silts surrounding the coarser lithologies tend to have more symmetrical and mesokurtic to platykurtic distributions. Sandy silts present in the southern part of the study area reflect shallowing toward Long Island, NY (i.e. MIL-71, MIL-72, MIL-73). One exception to the relationship between increasing water depth and the trend to finer-grained lithologies occurs in and around the channel between Stratford Point and Stratford Shoal Middle Ground where tidal currents are apparently strong enough to winnow away much of the silt and clay (i.e. MIL-31, MIL-32).
Sand-silt-clays and clayey silts dominate throughout the deeper south-central (main axis of Long Island Sound), north- central (depression at the eastern mouth of the channel between the shoals south of Stratford Point and Stratford Shoal Middle Ground), and eastern portions of the study area. Clayey silts also collect in the slight depression north of a sandy shoal that extends eastward from the gravelly sediments present in the northwestern part of the study area (i.e. MIL-2, MIL-26). These fine-grained sediments are predominantly very poorly sorted and have nearly symmetrical to coarsely skewed distributions. The sand-silt-clays are mainly platykurtic; the clayey silts are primarily mesokurtic.
Observations of the bottom video reveal that benthic biologic activity and tidal currents are important mechanisms that combine to control the reworking and resuspension of bottom sediments. For example, crabs throw the fine-grained sediment directly up into the water column while feeding and the burrowing activity of lobsters, shrimp, and crabs often mounds the sediments. Once these mounded sediments extend above the surrounding sea floor, they can be transported or reshaped by the strong tidal currents into the faint bedforms present in much of the bottom video.
Interested parties can obtain copies of the grain-size analysis data and an explanation of the variable headings in ASCII format and on 3.5" diskettes by contacting any of the authors. Videotapes showing the bottom character of the station locations can be viewed at the U.S. Geological Survey offices in Woods Hole, Massachusetts or at the Long Island Sound Resource Center at Avery Point, Groton, Connecticut.
ACKNOWLEDGMENTS
Collection and analysis of the samples was funded through a State of Connecticut/U.S. Geological Survey cooperative. We thank J. Dogiallo, C. Dodson, S. Wilson, N. Zackeo, J. Howald, and J. Athey (University of New Haven) and K. Parolski (USGS) for their assistance in the field, R. Rendigs and J. Commeau for reviewing
this report, and P. Simpson, Miles Peterle, and Mark Alexander (Connecticut Department of Environmental Protection) who provided shipboard support aboard the RV John Dempsey.
REFERENCES
Conner, J.J., 1964, Pleistocene geology of eastern Long Island, New York: American Journal Science, v. 262, p. 355-376.
Flint, R.F., 1971, The surficial geology of the Guilford and Clinton Quadrangles with map: State Geological and Natural History Survey of Connecticut, Quadrangle Report No. 28, 33 p., 3 sheets.
Folk, R.L., 1974, The petrology of sedimentary rocks: Hemphill Publishing Co., Austin, 182 p.
Fuller, M.L., 1914, The geology of Long Island, New York: U.S. Geological Survey Professional Paper 82, 231 p.
Goldsmith, Richard, 1980, Recessional moraines and ice retreat in southeastern Connecticut: In G.J. Larson and B.D. Stone (editors), Late Wisconsinan Glaciation of New England, Kendall/Hunt Publishing, Dubuque, p. 61-76.
Grim, M.S., Drake, C.L., and Heirtzler, J.R., 1970, Subbottom study of Long Island Sound: Geological Society America Bulletin, v. 81, p. 649-666.
Lewis, R.S., and Needell, S.W., 1987, Maps showing the stratigraphic framework and quaternary geologic history of eastern Long Island Sound: U.S. Geological Survey Miscellaneous Field Studies Map MF-1939-A, 7 p., 3 sheets.
Lewis, R.S., and Stone, J.R., 1991, Late Quaternary stratigraphy and depositional history of the Long Island Sound basin: Connecticut and New York: Journal Coastal Research, Special Issue 11, p. 1-23.
Mills, H.C., and Wells, P.O., 1974, Ice-shove deformation and glacial stratigraphy of Port Washington, Long Island, New York: Geological Society America Bulletin, v. 85, p. 357- 364.
Moffett, A.M., Poppe, L.J., and Lewis, R.S., 1994, Trace metal concentrations in sediments from eastern Long Island Sound: U.S. Geological Survey Open-File Report 94-620, 17 p.
Needell, S.W., Lewis, R.S., and Colman, S.M., 1987, Maps showing the Quaternary geology of east-central Long Island Sound: U.S. Geological Survey Miscellaneous Field Studies Map MF- 1939-B, 3 sheets.
Poppe, L.J., Eliason, A.H., and Fredericks, J.J., 1985, APSAS - An automated particle size analysis system: U.S. Geological Survey Circular 963, 77 p.
Poppe, L.J., Twichell, D.C., Lewis, R.S., and Zajac, R.N., 1995a, Sidescan sonar image and acoustic interpretation and of the Long Island Sound sea floor off Hammonasset Beach State Park, Connecticut: Geological Society America, Abstract with Programs, v. 27, p. 74-75.
Poppe, L.J., Lewis, R.S., Zajac, R.N., Twichell, D.C., and Knebel, H.J., 1995b, Sidescan sonar surveys of critical habitats in Long Island Sound, In: B.L. Edge (ed.) Coastal Zone 95, American Society of Civil Engineering, New York, p. 359-360.
Rodgers, John (compiler), 1985, Bedrock Geologic Map of Connecticut: Connecticut Natural Resources Atlas Series, Connecticut Geological and Natural History Survey, Department of Environmental Protection, Hartford, Connecticut, scale 1:125,000, 2 sheets.
Schlee, J. , 1966, A modified Woods Hole rapid sediment analyzer: Journal Sedimentary Petrology, v. 30, p. 403-413.
Shepard, F.P., 1954, Nomenclature based on sand-silt-clay ratios: Journal Sedimentary Petrology, v. 24, p. 151-158.
Shideler, G.L., 1976, A comparison of electronic particle counting and pipet techniques in routine mud analysis: Journal Sedimentary Petrology, v. 42, p. 122-134.
Sirkin, L.A., 1982, Wisconsinan glaciation of Long Island, New York to Block Island, Rhode Island, In Larson, G.J. and Stone, B.D., (Eds.) Late Wisconsinan Glaciation of New England: Dubuque, Iowa, Kendall/Hunt, p. 35-60.
Stone, B.D. and Borns, H.W., 1986, Pleistocene glacial and interglacial stratigraphy of New England, Long Island, and adjacent Georges Bank and Gulf of Maine. In Sibrava, V., Bowen, D.Q., and Richmond, G.M. (Eds.) Quaternary Glaciations of the Northern Hemisphere, Oxford, Pergamon Press, p. 39-52.
Stone, J.R., Schafer, J.P., London, E.H., and Thompson, W.B., 1992, Surficial materials map of Connecticut: U.S. Geological Survey Surficial Materials Map, scale 1:125,000, 2 sheets.
Stone, J.R., and Schafer, J.P., in press, Quaternary geologic map of Connecticut and Long Island Sound basin: U.S. Geological Survey Miscellaneous Investigations Series Map, 3 sheets.
Twichell, D.C., Poppe, L.J. , Zajac, Roman, and Lewis, R.S., 1995, Sidescan sonar survey of the Long Island Sound seafloor off Milford, Connecticut: Geological Society America Abstracts with Programs, v. 27, p. 88.
Twichell, D.C., Zajac, Roman, Poppe, L.J., Lewis, R.S., Cross, VeeAnn, and Nichols, David, in press, Bathymetry, sidescan sonar image, and surficial geological interpretation of Long Island Sound off Norwalk, Connecticut: U.S. Geological Survey Miscellaneous Field Studies Map, 2 sheets.
Wentworth, C.K., 1929, Method of computing mechanical composition of sediments: Geological Society America Bulletin, v. 40, p. 771-790.
Zajac, R.N., King, E., Dowgiallo, J., Wilson, S. , Lewis, R.S., Poppe, L.J., and Vozarik, J., 1995, The use of sidescan sonar and other imaging methods to assess sea floor habitats and associated benthic communities in Long Island Sound: Geological Society America, Abstracts with Programs, v. 27, p. 94.
APPENDIX A This t
able c
onta
ins
a list o
f the samp
le n
umbe
rs,
navi
gati
on (
latitudes
and
longitudes)
in degrees
dec
imal
min
utes
, water
depths i
n meters,
and
comm
ents
on
the
bott
om c
haracter.
Stations d
esig
nate
d by
an
aste
risk
wer
e oc
cupi
ed d
urin
g the
Augu
st 1995
cru
ise.
SAMPLE
MIL-1
MIL-2
MIL-
3 MIL-4
MIL-5
MIL-6
MIL-
7 MIL-8
MIL-
9 MI
L-10
MIL-11
MIL-
12
MIL-
13
MIL-
14
MIL-
15
MIL-
16
MIL-17
MIL-
18
MIL-19
MIL-
20
MIL-21
MIL-
22
MIL-
23
MIL-
24
MIL-25^
MIL-
25
MIL-
26
MIL-27
LATITUDE
41d06.
2651
' 41d06.
671'
41d06.
921'
41d06.
367'
41d06.
497'
41d06.
476'
41d06.
396'
41d06.
815'
41d06.
690'
41d06.
1101'
41d05.
5071
'
41d06.
2810'
41d0
6.22
25'
41d0
6.25
14'
41d05.
821'
41d05.
0431
'
41d05.
3398'
41d05.
012'
41d0
6.109'
41d06.04
49'
41d0
6.03
83'
41d05.62
64'
41d05.37
26'
41d05.
1632'
41d05.00
5'
41d0
5.27
41'
41d06.53
1'
41d0
6.515'
LONG
ITUD
E
-73d
06.1
463'
-73d04.994'
-73d03.682'
-73d03.770'
-73d
05.9
09'
-73d
05.8
610'
-73d05.870'
-73d03.118'
-73d
03.0
18'
-73d
02.6
09V
-73d
02.7
992'
-73d
05.4
781'
-73d
05.8
186'
-7
3d05
.751
0'
-73d
03.4
22'
-73d
03.2
957'
-73d
03.7
761'
-73d04.022'
-73d05.922'
-73d
05.7
947'
-73d
05.8
961'
-7
3d04
.170
2'
-73d
04.5
351'
-73d04.476'
-73d04.908'
-73d
04.9
104'
-73d05.470'
-73d
05.4
41'
DEPTH
(M)
13.0
15.1
16.5
18.2
13.4
13.6
13.6
17.6
18.2
22.1
24.4
16.7
15.0
15.1
22.8
25.3
23.8
25.0
15.3
15.9
15.7
21.3
28.4
32.6
25.5
35.0
15.5
15.7
COMM
ENTS
GRAV
ELLY
BOTTOM,
SHELLS (O
YSTE
R) AND
SHELL
DEBRIS,
CRAB
S, SNAILS
BIOTURBATED, WO
RM TU
BES,
SPARSE SH
ELL
DEBRIS,
CRABS, TRACKS
FLAT
BIOTURBATED
BOTT
OM,
SHRIMP BU
RROW
S, WORM TUBES, SPARSE SHELL
DEBRIS,
FISH
FAINT
RIPPLES, SEDIMENT MO
VING
IN
CURRENT,,
SHELL
DEBR
IS
GRAV
ELLY
BO
TTOM
, SHELLS A
ND SHELL
DEBRIS,
CRABS
(SPIDER
AND
CANC
ER),
HYDROZOANS
GRAV
ELLY
BOTTOM,
SHELLS A
ND SH
ELL
DEBRIS,
CRAB
S (SPIDER
AND
CANC
ER),
HYDROZOANS
GRAV
ELLY
BOTTOM,
SHELLS (OYSTER
AND
RAZOR
CLAM
) AN
D SH
ELL
DEBRIS,
CRABS, HYDROZOANS
FAINT
CURRENT -R
ELAT
ED BEDFORMS,
WORM TUBES, SHELL
DEBR
IS
FAIN
T BEDFORMS (SCOUR AN
D SH
ADOW
EFFECTS A
ROUN
D COARSER
DETR
ITUS
) SHRIMP BURROWS, WORM TUBES
UNDU
LATI
NG BIOTURBATED
BOTT
OM,
WORM
TU
BES,
PATCHY SHELL
DEBRIS,
ANEMONE
FIELD
BIOTURBATED, FA
INT
BEDFORMS,
LOBSTER
AND
SHRI
MP BURROW
S, WO
RM TU
BES,
SC
ATTE
RED
SHELLS AN
D SH
ELL
DEBRIS,
ANEMONE
FIELD
BIOT
URBA
TED,
WORM TU
BES,
SC
ATTE
RED
SHEL
LS A
ND SH
ELL
DEBRIS,
CRABS
FAIN
T BEDFORMS (SCOUR AN
D SH
ADOW
EFFECTS,
SHEL
LS A
ND SH
ELL
DEBRIS,
CRABS
FAIN
T BEDFORMS,
GRAVELLY PA
TCHE
S, CR
ABS
(SPIDER
AND
CANCER), SHELLS AN
D SHELL
DEBR
IS
UNDULATING BI
OTUR
BATE
D BOTTOM W
ITH
FAINT
BEDF
ORMS
, SHRIMP BURROWS, WORM TUBES, SC
ATTE
RED
AND
SHEL
L DEBRIS,
TRACKS
BIOTURBATED, SHRIMP BURROWS, WO
RM TUBES, SC
ATTE
RED
SHEL
L DEBRIS,
ANEM
ONES
UNDULATING BI
OTUR
BATE
D BO
TTOM
, SH
RIMP
BU
RROW
S, WO
RM TU
BES,
ANEMONE
FIELD
UNDULATING BI
OTUR
BATE
D BO
TTOM
, NO
NDES
CRIP
T BURROWS
AND
TUBE
S, SC
ATTE
RED
SHELL
FRAGMENTS,
GRAV
ELLY
PA
TCHE
S, FA
INT
BEDF
ORMS
, SH
ELLS
AND SH
ELL
DEBRIS,
CRABS
SHEL
LS AN
D SH
ELL
DEBRIS,
CRAB
S (SPIDER
AND
CANC
ER),
FL
OUND
ER
SHELLS
FLOUNDER
GRAV
ELLY
PA
TCHE
S, FA
INT
BEDFORMS,
CRABS
(SPIDER
AND
CANCER), SHELL
AND
SHEL
L DE
BRIS
BIOTURBATED, FA
INT
CURRENT
RIPP
LES,
LO
BSTE
RS A
ND BU
RROW
S, SHRIMP BURROWS, WORM TU
BES,
CRABS, TRACKS
BIOTURBATED, SO
ME NO
NDES
CRIP
T BURROWS
AND
TUBES, SPARCE SH
ELL
DEBR
IS
FLAT
BI
OTUR
BATE
D BO
TTOM
, SHRIMP BURROWS, SC
ATTE
RED
SHELLS A
ND SH
ELL
DEBRIS,
CRAB
S, FISH
BIOT
URBA
TED,
NO
NDES
CRIP
T BURROWS
AND
TUBES, SC
ATTE
RED
SHELL
DEBRIS,
CRABS, SN
AILS
TURBID,
BIOTURBATED, WORM T
UBES,
CRABS, TR
ACKS
BIOTURBATED, LOBSTER, WO
RM TUBES, CR
ABS
(CANCER),
TRACKS,
BLAC
K WI
TH H2
S OD
OR
FLAT
BIOTURBATED
BOTT
OM,
SHRI
MP BU
RROW
S, WORM TUBES, CR
ABS
(CAN
CER)
10
SAMP
LE
MIL-28
MIL-29
MIL-
30
MIL-31
MIL-
32MI
L-33
MIL-34
MIL-
35
MIL-36
MIL-37
MIL-38
MIL-39
MIL-40
MIL-41
MIL-42
MIL-
43
MIL-
44
MIL-
45MIL-46
MIL-47
MIL-48
MIL-49
MIL-498
MIL-
50
MIL-51
MIL-52
MIL-
53MI
L-54
LATITU
DE
41d06.44
2'41d05.0180'
41d0
5.66
87'
41d05.
5522'
41d05.1733'
41d06.2844'
41d06.2317'
41d06.
1850-
41d04.3113'
41d04.8688'
41d04.4098'
41d03.0182'
41d06.0513'
41d0
6.01
5'41d05.9949'
41d04.6959'
41d04.59
44'
41d0
4.54
1'41d04.17
16'
41d06.691'
41d0
6.70
5'41
d06.
623'
41d0
6.61
99'
41d04.1538'
41d04.3660'
41d0
4.53
26'
41d04.65
12'
41d06.46
62'
LONG
ITUD
E
-73d
05.5
29'
-73d
05.0
285'
-73d
05.2
733'
-73d
05.6
595'
-73d
05.4
228'
-73d
05.1
865'
-73d
05.1
167'
-73d
05.2
279'
-73d
02.2
789'
-73d
02.7
285'
-73d
03.0
107'
-73d
02.9
608'
-73d
05.0
801'
-73d
05.0
30'
-73d
05.1
023'
-73d
03.8
609'
-73d
03.9
542'
-73d
04.3
13'
-73d
04.3
998'
-73d
04.1
65'
-73d
04.2
32'
-73d
04.2
13'
-73d04.1894'
-73d
04.7
555'
-73d
04.9
137'
-73d
04.3
270'
-73d
05.1
174-
-73d
04.2
571'
DEPT
H (M)
15.1
26.7
19.8
17.5
36.5
17.5
17.8
18.0
27.5
26.5
25.3
26.5
18.6
18.8
18.8
25.7
26.3
26.3
22.3
16.3
16.3
16.5
16.5
17.8
19.4
25.7
21.9
16.5
COMMENTS
GRAVELLY,
FAIN
T CURRENT
RIPP
LES,
SHELLS A
ND SHELL
DEBRIS,
TRAC
KS,
FISH
PATC
HY GRAVEL,
FAINTLY
RIPP
LED,
ABUNDANT SH
ELLS
AND
DEBRIS, CRABS
(SPIDER
AND
CANC
ER),
SN
AILS
,FLOUNDER
SOME GRAVEL,
BIOT
URBA
TED,
WO
RM T
UBES
, SC
ATTE
RED
SHEL
LS A
ND SH
ELL
DEBRIS,
CRABS
(SPIDER
AND
CANC
ER),
TRACKS
FAIN
T BE
DFOR
MS (SCOUR A
ND SH
ADOW
EFF
ECTS
), SH
ELLS
AND
SHELL
DEBR
IS,
CRABS
(SPIDER
AND
CANCER)
RIPPLED
BOTTOM,
SHELLS A
ND SH
ELL
DEBR
IS,
CRABS
BIOT
URBA
TED,
NONDESCRIPT
BURR
OWS,
AB
UNDA
NT SHELL
DEBRIS,
CRAB
S, SN
AILS
, TR
ACKS
FLAT BIOTURBATED
BOTTOM,
WORM
TUB
ES,
CRAB TR
ACKS
, SCATTERED
SHELLS A
ND SH
ELL
DEBR
ISBIOTURBATED, WORM TU
BES,
CRABS
(CAN
CER)
AND
TRACKS,
SCAT
TERE
D SH
ELL
DEBR
IS
UNDU
LATI
NG BI
OTUR
BATE
D BO
TTOM
WITH
FAIN
T RI
PPLE
S, SH
RIMP
BU
RROW
S, WORM TUBES, AN
EMON
ES,
FLOU
NDER
FAIN
T CURRENT
RIPP
LES,
LO
BSTE
R, SHRIMP A
ND LOBSTER
BURR
OWS,
WO
RM T
UBES
, SCATTERED
SHELL
HASH,
ANENOMES
FAIN
T CURRENT
RIPPLES, SH
RIMP
BU
RROW
S, WORM TUBES, TRACKS,
SPARCE SH
ELL
DEBRIS,
ANEM
ONES
, FL
OUND
ERUN
DULA
TING
BI
OTUR
BATE
D BO
TTOM
WITH
FAIN
T BU
RROW
S, SH
RIMP
BURROWS, WORM TU
BES,
SC
ATTE
RED
SHEL
LDEBRIS,
SPARSE AN
EMON
ES
WORM
TU
BES,
SC
ATTE
RED
SHELL
DEBRIS,
CRAB
TRACKS
FAINT
BEDFORMS,
SCAT
TERE
D SH
ELL
DEBRIS,
CRAB TR
ACKS
BIOTURBATED, FAINT
BEDF
ORMS
, SH
RIMP
BUR
ROWS
, WORM T
UBES,
SCAT
TERE
D SHELLS AN
D SHELL
DEBR
ISUN
DULA
TING
BI
OTUR
BATE
D BOTTOM,
SHRIMP BU
RROW
S, CR
ABS,
SOME SH
ELL
DEBRIS,
VARI
ABLE
TE
XTUR
E, TRACKS
BIOT
URBA
TED,
FAINT
BEDF
ORMS
(SCOUR AND
SHAD
OW EFFECTS
AROUND COARSER
DETRITUS), WORM TU
BES,
SCAT
TERE
D SH
ELL
DEBR
ISBIOTURBATED, FAINT
RIPP
LES,
SHRIMP BU
RROW
S, SNAILS,
SCAT
TERE
D SH
ELL
DEBR
ISBI
OTUR
BATE
D, FA
INT
BEDF
ORMS
, SHRIMP BU
RROW
S, WORM TU
BES,
SOME SH
ELL
DEBRIS,
FLOU
NDER
FAIN
T CURRENT
RIPP
LES,
WORM TU
BES,
PATCHY SHELL
DEBRIS,
FISH
UNDU
LATI
NG BI
OTUR
BATE
D BOTTOM,
LOBSTER
AND
LOBSTER
BURR
OWS,
SC
ATTE
RED
SHEL
LS AND
SHELL
DEBR
ISFA
INT
BEDF
ORMS
(SCOUR AND
SHAD
OW E
FFECTS AR
OUND
COARSER
DETR
ITUS
, WO
RM TUBES, SCATTERED
SHEL
LDE
BRIS
BIOTURBATED, SHELL
DEBRIS,
CRABS
(CAN
CER)
, SNAILS,
TRAC
KSBOULDERS,
SEAW
EED,
HY
DROZ
OANS
GRAVELLY,
SEAW
EED,
SHELLS,
CRAB
S, HYDROZOANS
FAIN
T BEDFORMS,
LOBSTER
BURR
OWS,
SC
ATTE
RED
SHELL
DEBRIS,
ANEMONE
FIELDS
GRAVELLY,
CRAB
S, HERMIT CR
ABS,
SHELLS AND
SHEL
L DE
BRIS
BIOT
URBA
TED
BOTTOM,
SHRI
MP BU
RROW
S, WORM T
UBES,
SCAT
TERED
SHEL
L DEBRIS,
CRABS
11
SAMPLE
MIL-
55MI
L-56
MIL-
56MI
L-57
MIL-
58
MIL-
59
MIL-
60MI
L-61
MIL-
62MIL-63
MIL-64
MIL-65
MIL-
66
MIL-
67MI
L-68
MIL-
69
MIL-
70
MIL-
71MI
L-72
MIL-
73
MIL-
74*
MIL-75
MIL-
76
LATI
TUDE
41d06.4517'
41d06.4314'
41d06.4782'
41d0
4.64
11'
41d03.8996'
41d03.7748'
41d03.5094'
41d06.1651'
41d06.1292'
41d06.0753'
41d03.272'
41d03.9936'
41d03.3376'
41d02.870'
41d03.546T
41d03.4589'
41d0
3.47
06'
41d02.6668'
41d0
2.77
4'41d02.4334'
41d04.3629'
41d03.3360'
41d03.2828'
LONG
ITUD
E
-73d
04.1
382'
-73d
04.2
370'
-73d
04.3
338'
-73d
05.6
349'
-73d
04.8
714'
-73d
04.6
269'
-73d
04.8
237'
-73d
04.2
393'
-73d
04.1
512'
-73d
04.2
917'
-73d
04.9
64'
-73d
03.5
542'
-73d
02.7
066'
-73d02.570'
-73d
04.5
095'
-73d
04.5
201'
-73d
04.5
010'
-73d
03.4
375'
-73d
04.3
04'
-73d
04.3
165'
-73d
04.4
272'
-73d
04.3
631'
-73d
04.3
741'
DEPT
H (M
)
16.7
16.7
16.1
21.1
19.4
21.9
22.8
18.0
18.2
18.2
23.8
26.1
34.0
36.5
26.5
26.3
26.3
35.3
35.0
35.1
24.8
30.1
30.7
COMM
ENTS
FAIN
T RIPPLES, WORM TUBES, SPARSE SH
ELL
DEBR
IS,
CRABS, TRACKS
BIOTURBATED
BOTTOM WI
TH FAINT
BEDFORMS,
SHRI
MP BURROWS, WORM TU
BES,
SOME SHELL
DEBR
IS,
CRABS,
TRAC
KSTU
RBID
, BIOTURBATED, SHRIMP AND
SHRI
MP BURROWS, WORM TUBES, SOME SH
ELL
DEBR
ISGRAVELLY,
SHELLS AND
SHELL
DEBR
IS,
SPID
ER CRABS, ST
ARFI
SH
BIOTURBATED, FA
INT
BEDFORMS,
LOBS
TER
AND
SHRI
MP BU
RROW
S, WO
RM TU
BES,
GRAVELLY PATCHES, CRABS,
SCAT
TERE
D SHELL
DEBR
ISBIOTURBATED, FAINT
RIPP
LES,
LOBSTER, LO
BSTE
R AND
SHRIMP BURROWS, WORM AN
D AMPHIPOD TUBES, SH
ELL
DEBRIS
UNDULATING BIOTURBATED
BOTT
OM,
NONDESCRIPT
BURROWS, WO
RM TU
BES,
SOME SHELL
DEBR
IS,
FISH
FAINT
CURR
ENT
RIPPLES, SC
ATTE
RED
SHELL
DEBR
IS,
CRAB
S, TRACKS
FAIN
T BEDFORMS,
SOME
SH
ELL
DEBR
IS,
TRAC
KSBI
OTUR
BATE
D BO
TTOM
, FA
INT
CURRENT-RELATED
BEDFORMS,
SHRIMP BURROWS, WO
RM TUBES, SC
ATTE
RED
SHELL
DEBR
IS,
CRABS
GRAV
ELLY
BO
TTOM
, WORM TUBES, SHELLS AN
D SHELL
DEBR
IS,
CRAB
S (S
PIDE
R AN
D CA
NCER
), HY
DROZ
OANS
UNDULATING BIOTURBATED
BOTT
OM,
LOBS
TER
AND
SHRI
MP BU
RROW
S, WO
RM TU
BES,
SN
AILS
, SC
ATTE
RED
SHEL
LDEBRIS
UNDULATING BIOTURBATED
BOTTOM WI
TH FAINT
CURR
ENT
RIPP
LES,
LO
BSTE
R AN
D SH
RIMP
BURROWS, SC
ATTE
RED
SHELL
DEBR
IS,
ANEM
ONES
, CR
ABS
UNDULATING BIOTURBATED
BOTT
OM,
LOBS
TER
AND
SHRI
MP BURROWS, WO
RM TU
BES,
SOME SH
ELL
DEBR
IS,
ANEM
ONES
FAIN
T CU
RREN
T RIPPLES, BI
OTUR
BATE
D, LO
BSTE
R AND
BURROWS, SH
RIMP
BURROWS, WORM AN
D AM
PHIP
OD TU
BES,
CRAB
S (C
ANCE
R),
SPAR
SE SHELL
DEBRIS
UNDULATING BIOTURBATED
BOTTOM WITH FAINT
CURR
ENT
RIPP
LES,
SH
RIMP
BURROWS, WORM TUBES, SP
ARCE
SHELL
DEBR
IS,
TRAC
KS,
CRAB
S (CANCER),
FLOU
NDER
UNDULATING BIOTURBATED
BOTTOM WI
TH FAINT
CURR
ENT
RIPP
LES,
SH
RIMP
BU
RROW
S, WORM TUBES, SOME SH
ELLS
AND
SHEL
L DE
BRIS
, CR
ABS
(CANCER),
FLOU
NDER
UNDULATING BIOTURBATED
BOTT
OM,
LOBS
TER
AND
SHRI
MP BU
RROW
S, WO
RM TU
BES,
SOME SHELL
DEBRIS
BIOT
URBA
TED,
FAINT
CURR
ENT
RIPPLES, SH
RIMP
BURROWS, SCATTERED
SHEL
L DEBRIS
UNDULATING BIOTURBATED
BOTT
OM WI
TH FAINT
CURR
ENT
RIPP
LES,
SH
RIMP
BU
RROW
S, FI
SH
TURB
ID,
BIOT
URBA
TED,
SHRIMP BURROWS, WO
RM TUBES, SHELLS AN
D SHELL
DEBRIS
UNDULATING BIOTURBATED
BOTT
OM,
SHRIMP BURROWS, WO
RM TUBES, SC
ATTE
RED
SHEL
L DE
BRIS
, ST
ARFI
SHUNDULATING BIOTURBATED
BOTT
OM,
LOBSTER, LO
BSTE
R AND
SHRI
MP BURROWS, WO
RM AN
D AM
PHIP
OD TU
BES,
CRABS
MIL-
77
41d03.2726'
(CANCER)
-73d
04.3
266'
28.6
BIOT
URBA
TED,
FAINT
CURR
ENT
RIPP
LES,
LO
BSTE
R AND
SHRI
MP BURROWS, WO
RM TUBES, SC
ATTE
RED
SHEL
LS AND
SHELL
DEBR
IS,
FLOU
NDER 12
SAMPLE
MIL-
78*
MIL-79^
MIL-80^
MIL-
81
MIL-82
MIL-83
MIL-84
MIL-85*
MIL-86^
MIL-87^
MIL-
88
MIL-
89
MIL-90
MIL-
91^
MIL-92
MIL-93*
MIL-
96MI
L-97
MIL-
98
MIL-103
MIL-104
MIL-105
MIL-
110
MIL-111
MIL-
112
MIL-
117
LATITUDE
41d04.5596'
41d04.
5207'
41d04.
7961'
41d04.9963'
41d03.1397«
41d03.1325'
41d03.0814'
41d05.8717'
41d05.6028'
41d05.7535'
41d06.3531'
41d03.7022'
41d03.6342'
41d03.6193'
41d06.8931'
41d06.
2063'
41d0
3.40
6»41d03.3307'
41d03.3715'
41d03.1145'
41d03.
1219«
41d03.0604»
41d03.2741'
41d03.2006'
41d03.2008'
41d03.4580'
LONGITUDE
-73d04.6127'
-73d05.3219«
-73d
05.2
990'
-73d05.2262«
-73d04.3898'
-73d
04.2
915«
-73d04.2781'
-73d05.5279'
-73d04.9659'
-73d
04.5
797'
-73d
04.6
778'
-73d
04.2
153'
-73d04.1846'
-73d04.1146'
-73d04.5043«
-73d
03.3
595«
-73d
04.0
62«
-73d04.0714'
-73d
04.0
025«
-73d
04.1
625'
-73d04.0834'
-73d04.1152«
-73d
03.7
251«
-73d
03.7
131«
-73d03.6153«
-73d03.6531«
DEPT
H (M
)
21.7
20.0
22.6
25.3
33.6
33.0
33.8
15.5
20.1
19.6
17.0
25.3
26.9
27.3
14.6
18.8
29.6
31.3
30.5
32.6
32.6
33.0
31.7
32.1
32.1
28.6
COMM
ENTS
TURBID,
BOUL
DERS
, COBBLES, SP
ONGE
S, SE
AWEE
D, LO
BSTE
R, HY
DROZ
OANS
TURBID,
GRAVEL,
SHEL
LS AN
D SH
ELL
DEBRIS,
HYDR
OZOA
NSTU
RBID
, GR
AVEL
LY PA
TCHE
S, WORM TU
BES,
SHELLS AND
SHELL
DEBR
ISTU
RBID
, GRAVELLY PA
TCHE
S, WORM TU
BES,
SH
ELLS
AND SH
ELL
DEBR
IS,
FISH,
CRABS
(CAN
CER)
BIOTURBATED, FAINT
CURRENT
RIPP
LES,
LOBSTER
AND
SHRI
MP BU
RROW
S, WORM AN
D AMPHIPOD TU
BES,
SCATTERED
SHEL
L DE
BRIS
, TR
ACKS
, FL
OUND
ERUNDULATING BIOTURBATED
BOTTOM,
LOBSTER
AND
SHRIMP BU
RROW
S. WORM AN
D AMPHIPOD TU
BES,
SC
ATTE
RED
DEBRIS,
CRABS
UNDULATING BIOTURBATED
BOTT
OM,
LOBSTER
AND
SHRIMP BU
RROW
S, WORM TU
BES,
SO
ME SHELL
HASH,
CRABS
(CAN
CER)
, FLOUNDER
TURB
ID,
NO BOTTOM VI
DEO,
GRAVEL,
SHELLS AN
D SHELL
DEBR
ISTURBID,
BIOTURBATED, WORM TU
BES,
TR
ACE
OF SHELL
DEBR
IS,
TRAC
KSVE
RY TURBID,
BIOTURBATED, SCATTERED
SHELL
DEBR
IS,
WORM TUBES
TURBID,
NO BOTTOM VI
DEO,
CR
ABS,
NUT
CLAMS
FLAT BIOTURBATED
BOTT
OM,
SHRIMP BU
RROW
S, WORM AN
D AM
PHIP
OD TU
BES,
SP
ARCE
SHELL
DEBR
IS,
TRACKS,
LAYER
UNDULATING BIOTURBATED
BOTT
OM,
SHRI
MP BU
RROW
S, WO
RM AN
D AM
PHIP
OD TUBES, SO
ME SHELL
DEBR
ISBIOTURBATED, LOBSTER
AND
SHRIMP BU
RROW
S, SC
ATTE
RED
SHEL
L HASH,
WORM A
ND AMPHIPOD TU
BES,
TRACKS
CRAB
S (C
ANCE
R)TU
RBID
, NO
BOTTOM VI
DEO,
NUT
CLAMS
TURBID,
SHELLS AN
D SHELL
DEBRIS,
FAINT
BEDFORMS
UNDULATING BIOTURBATED
BOTTOM,
SHRIMP BU
RROW
S, WO
RM TU
BES,
SO
ME SH
ELL
DEBR
IS,
CRAB
SBIOTURBATED, LO
BSTE
R, LOBSTER
POT,
LOBSTER
AND
SHRIMP BU
RROW
S, WORM TU
BES,
SP
ARSE
SH
ELL
DEBR
ISTR
ACKS
SHEL
L
FLOC
, *
UNDULATING BIOTURBATED
BOTT
OM,
FAINT
RIPP
LES,
LO
BSTE
R AND
SHRI
MP BU
RROW
S, SO
ME SHELL
DEBR
IS,
CRAB
S,FLOUNDER
UNDULATING BIOTURBATED
BOTT
OM,
LOBS
TER,
SHRIMP BU
RROW
S, WORM TU
BES,
SO
ME SH
ELLS
AND
SHEL
L DE
BRIS
,FLOUNDER
BIOTURBATED, LO
BSTE
R, SH
RIMP
BU
RROW
S, WORM TU
BES,
CR
ABS,
TR
ACKS
UNDULATING BIOTURBATED
BOTT
OM WI
TH FAINT
RIPP
LES,
LO
BSTE
R, LOBSTER
AND
SHRIMP BU
RROW
S, WORM TU
BES,
SCATTERED
SHELL
DEBR
ISBIOTURBATED, FAINT
CURRENT
RIPP
LES,
EXTENSIVE
SHRIMP AN
D WORM BU
RROW
ING,
SO
ME SHELL
DEBR
IS
BIOT
URBA
TED,
LOBSTER
AND
SHRIMP BU
RROW
S, WORM A
ND AMPHIPOD TU
BES,
SC
ATTE
RED
SHEL
L HA
SH,
TRAC
KSUNDULATING BIOTURBATED
BOTT
OM,
LOBS
TER,
SHRIMP BU
RROW
S, WORM TU
BES,
SO
ME SHELL
DEBRIS
UNDULATING BIOTURBATED
BOTTOM,
LOBSTER, LO
BSTE
R AN
D SHRIMP BU
RROW
S, WORM TU
BES,
ANEMONES,
SOME
MIL-
118
41d03.4218'
-73d
03.6
826'
SHEL
L DEBRIS
29.8
BI
OTUR
BATE
D, FAINT
RIPP
LES,
LO
BSTE
R AND
SHRIMP BU
RROW
S, WO
RM TU
BES,
ANEMONES,
TRACKS
13
SAMP
LELA
TITU
DELO
NGIT
UDE
DEPTH
(M)
COMMENTS
MIL-
119
41d0
3.50
0'
-73d
03.6
51'
28.6
UNDULATING BI
OTUR
BATE
D BO
TTOM
, SH
RIMP
BURROWS, WORM AN
D AMPHIPOD TUBES, SC
ATTE
RED
SHELL
DEBR
IS,
ANEMONES
MIL-
124
41d0
3.78
9'
-73d03.600'
26.7
UNDULATING BI
OTUR
BATE
D BO
TTOM
, LO
BSTE
R AND
SHRIMP BU
RROW
S, AM
PHIP
OD TU
BES,
SH
ELLS
, TR
ACKS
, CR
ABS,
FLOU
NDER
MIL-
125
41d0
3.7831'
-73d
03.6
996'
27.1
UNDULATING BIOTURBATED
BOTT
OM,
SHRI
MP BURROWS, WORM AN
D AMPHIPOD TU
BES,
SH
ELLS
, CR
ABS,
TR
ACKS
MI
L-12
6 41
d03.
7429'
-73d03.6833'
27.1
UN
DULA
TING
BIOTURBATED
BOTT
OM,
LOBS
TER
AND
SHRIMP BU
RROW
S, WORM TU
BES,
SH
ELL
DEBR
IS,
TRAC
KS,
CRAB
S(C
ANCE
R)
14
APPENDIX B
This ta
ble
contains the relative grain-size frequency distributions by weight in whole p
hi u
nits
fo
r each
samp
le.
The
-5 <
J>fraction contains all
sediment coarser than 32
mm
; th
e 11
<J>fraction contains sediment with
diameters between .0
01 and
.000
72 mm
.
SA
MP
LE
NU
MBE
R
MIL
-1M
IL-2
MIL
-3M
IL-4
MIL
-5M
IL-8
MIL
-9M
IL-1
0
MIL
-11
MIL
-12
MIL
-15
MIL
-16
MIL
-17
MIL
-18
MIL
-21
MIL
-22
MIL
-23
MIL
-24
MIL
-25
MIL
-26
MIL
-29
MIL
-30
MIL
-31
MIL
-32
110
0.1
85
.98
2.3
02
.02
0.3
52
.92
3.5
63
.58
3.3
10.6
03
.36
3.2
8
2.9
20
.99
0.2
62
.26
3.7
03
.62
0.7
13.0
1
0.7
21.2
70.4
30
.88
CLA
Y10
0 90
0.5
811.1
07.3
05.7
2
1.0
89
.16
11.4
210.9
0
10.2
21.8
79.8
210.5
2
8.0
13
.12
0.8
17
.27
11.7
510.6
52.4
09.8
5
2.2
63
.89
1.3
32.5
3
0.8
515.3
011.2
08.6
4
1.6
914.0
21
6.6
315
.51
14
.82
2.8
314
.51
15.6
6
11.7
84.5
61.1
710.9
7
17
.09
15.4
73.8
314.5
0
3.1
35.8
91
.94
3.9
5
i 80
0.9
217.1
313.8
19
.89
1.8
71
5.5
919.8
71
8.0
4
16
.36
3.3
51
7.1
51
6.6
4
12.5
13.9
01
.24
11.9
6
18
.35
17.7
04.3
516.3
3
3.3
36
.40
2.1
54.6
0
70
1.1
718.1
91
5.2
09.4
3
2.1
017.9
72
1.9
81
9.1
7
18
.15
3.5
118.7
115.8
8
13
.84
4.2
71.4
21
2.2
7
19.6
219.9
73.9
51
6.4
2
3.3
55.8
52.0
85
.07
SIL
T
60
50
1.2
214.4
913.0
37.5
3
1.7
517.1
117.5
815.6
1
16
.90
3.0
01
4.7
613.3
7
12
.08
4.3
41.1
210.2
0
17
.93
20
.50
2.9
31
4.8
5
2.4
93.5
41
.35
4.4
6
0.5
810.4
69
.00
6.9
8
0.7
06.8
46.0
57
.97
6.5
11
.72
10.5
76
.16
2.9
22.9
00.3
04.5
5
8.3
49.1
51.3
91
1.6
7
0.8
01.5
20.2
23.0
6
i i 40
0.4
13.5
33.9
39.8
2
0.8
13
.97
1.61
6.1
6
7.5
15.4
25
.67
8.1
7
6.8
03.5
40
.47
7.0
4
2.4
12.3
04.1
03.9
4
4.6
02.0
60.6
311.1
8
30
4.8
11.2
06.9
915.4
9
4.0
64.4
40.6
51.5
8
3.6
13
2.8
83.3
56
.80
17
.30
15
.04
9.6
614.9
7
0.2
40
.27
36.0
73.6
5
26
.36
25
.49
5.3
728.7
4
20
48
.23
0.9
76
.99
13.1
8
33.5
35
.51
0.4
30.5
4
1.3
328.2
40.9
82.1
0
10.2
645.7
057.6
816.5
7
0.1
70.1
529.1
62.1
9
31.4
835.7
34
7.0
82
6.7
0
SAND
10
16.0
70
.86
4.9
36.1
4
24.8
41.8
90.1
60.4
8
0.7
411.0
70.7
80.8
5
1.1
91
0.8
31
9.6
81.5
7
0.2
00.1
88
.18
1.7
3
11
.15
2.9
021.4
07.2
3
00
1.8
60
.78
5.3
03
.40
6.8
90
.57
0.0
80
.46
0.5
54.0
20.3
50
.57
0.4
00
.81
3.0
50
.28
0.1
90.0
52.6
51.8
4
10
.07
0.7
07.6
51.4
5
i-1
0
0.7
60
.00
.00.2
7
5.1
20
.00
.00
.0
0.0
1.4
90
.00
.0
0.0
0.0
1.7
60.0
8
0.0
0.0
0.2
80
.0
0.2
41.4
22.7
60
.14
-20
1.9
60
.00
.01.5
0
10.6
90
.00
.00
.0
0.0
0.0
0.0
0.0
0.0
0.0
1.9
90
.0
0.0
0.0
0.0
0.0
0.0
0.0
01
.55
0.0
GR
AV
EL
-30
-4
0
20
.40
0.0
0.0
0.0
4.5
20
.00
.00
.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
3.3
44
.06
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
-50
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
15
SAM
PLE
NUM
BER
MIL
-33
MIL
-36
MIL
-37
MIL
-38
MIL
-39
MIL
-42
MIL
-43
MIL
-44
MIL
-45
MIL
-46
MIL
-47
MIL
-51
MIL
-52
MIL
-53
MIL
-54
MIL
-56
MIL
-57
MIL
-58
MIL
-59
MIL
-60
MIL
-61
MIL
-64
MIL
-65
MIL
-66
MIL
-67
MIL
-68
MIL
-71
MIL
-72
MIL
-73
MIL
-74
MIL
-75
MIL
-78
CLA
Y1
10
100
90
1.1
74
.28
2.7
12.9
3
3.3
70.6
21.4
82.8
0
3.2
83
.51
2.2
60.8
7
2.1
60
.58
2.0
00
.91
0.2
40.9
81.8
21.1
2
1.2
30
.81
4.0
42.7
4
3.3
62.2
31
.85
2.1
1
1.4
80.9
42.5
31.1
3
3.1
912.7
58
.62
9.1
7
10
.81
1.9
84
.42
8.8
1
9.4
09
.82
6.8
02.8
0
6.8
01.7
26
.07
3.7
7
0.7
12
.89
5.2
74
.06
3.9
21.3
61
2.1
98.5
1
10
.34
6.8
35.7
36
.87
4.5
23
.78
7.9
94
.56
4.8
218.1
414.2
514.4
4
15
.39
2.9
36.1
21
3.4
4
13.5
014.7
69
.58
4.3
9
10.0
72.5
48.8
27
.16
0.9
44
.21
7.4
26
.61
6.5
31.8
316.1
21
1.7
5
15.0
69
.66
8.3
410.3
0
6.2
66
.79
12.1
18
.17
i 80
5.4
719.7
21
8.3
41
5.8
9
16
.89
3.4
86
.68
15.2
0
13
.84
16.1
01
0.9
44
.79
10.7
82
.71
9.6
410.0
4
0.9
54
.76
7.5
27.3
8
8.1
31
.91
15.9
112.8
7
15.3
810.3
89
.91
11.0
5
6.7
79.3
21
2.6
21
0.9
6
70
5.7
81
9.9
21
9.3
515.3
4
18
.27
3.5
07
.09
16
.64
13
.83
16
.10
13.5
94.8
5
11.3
12
.89
12.5
411.6
9
0.9
74
.81
8.8
66.6
2
9.0
31.7
715.8
11
4.9
0
15
.54
11.2
11
0.3
41
0.8
6
6.9
810.3
511.3
711.2
2
SIL
T
60
50
4.3
21
5.7
319.7
61
2.2
0
17
.97
3.1
46.3
31
5.4
4
11.1
41
4.5
318.6
93.5
5
9.1
62.3
82
4.9
19
.68
0.6
33.9
89
.58
4.4
9
7.4
91.1
913.4
61
6.7
3
9.5
510.9
69.2
17
.51
6.2
88.6
38.8
27.1
2
3.0
25.2
89.8
48.2
5
6.5
10.9
52.7
211.7
0
2.5
412
.41
16.2
91.5
4
6.1
61.0
020.7
67.0
5
0.1
81
.84
7.8
53
.56
3.7
50
.89
8.8
39
.59
1.0
69
.27
5.5
42
.29
4.3
77.5
54
.99
2.9
6
i 40
6.9
82.1
04
.02
5.6
8
5.4
93.9
49.9
69.5
4
6.3
49
.36
5.9
42.2
8
10
.44
2.1
44.5
61
2.0
2
1.3
08
.21
13
.55
10
.84
7.6
05.0
97.7
21
3.8
4
12.8
31
6.3
718.1
21
8.0
4
17.2
118.2
71
5.7
36
.88
30
25.9
51.0
21.5
67.0
7
3.4
427.1
630.2
95.0
2
6.9
61.
415.2
48
.96
23.0
412.9
85.5
016.2
7
11.8
19.5
84
.69
13.2
7
24.5
452.1
73
.29
6.9
2
12
.73
13
.48
19
.22
27.2
0
40
.22
11.1
018
.61
11
.78
20
19
.73
0.5
01.0
06.1
2
0.7
23
4.0
821.3
00
.79
6.6
71.0
84.4
42
0.3
3
6.4
619.2
62.8
511.4
6
28
.92
10.9
810.3
52
1.7
1
19
.63
22
.52
1.3
31.
21
3.3
97.0
510.4
63
.03
5.2
511.9
03
.96
16
.69
SAND
10
11
.48
0.3
30.4
21.7
9
0.5
08.6
83.1
50.3
4
3.9
20.7
03
.06
17
.45
2.2
312
.51
1.21
5.1
0
19.2
19.3
810.5
612.6
8
4.3
07.8
80
.67
0.4
6
0.5
51.5
00.8
80.4
4
0.5
66
.11
0.9
98
.89
00
6.8
40.2
20.1
21.
11
0.6
30.4
20.4
60
.28
1.3
80.2
03
.18
11
.45
0.5
610.4
91
.13
4.8
4
7.3
24
.59
4.1
93.7
5
1.8
51.8
60.6
40.4
8
0.2
20.5
20.3
90
.31
0.1
32.3
20.2
75.0
3
i -1
0
1.2
60
.00.0
0.0
0.0
0.7
60
.00.0
0.8
70
.00
.08
.66
0.0
011.8
50.0
0.0
8.6
06
.46
2.0
72.6
3
0.0
0.2
90.0
0.0
0.0
0.5
40
.00.0
0.0
0.7
30
.01
.81
-20
0.0
0.0
0.0
0.0
0.0
3.3
10.0
0.0
0.0
00
.00
.08.1
5
0.2
811.6
10.0
0.0
5.3
48
.27
1.1
91.2
8
0.0
0.4
50.0
0.0
0.0
0.0
0.0
0.0
0.0
2.2
20.0
2.8
0
GR
AVEL
-3
0
-40
0.0
0.0
0.0
0.0
0.0
5.0
60
.00.0
6.3
30
.00
.00
.0
0.0
5.3
50.0
0.0
4.5
119.0
75
.09
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
8.3
60.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
-50
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
16
SAM
PLE
NUM
BER
MIL
-79
MIL
-80
MIL
-81
MIL
-82
MIL
-85
MIL
-86
MIL
-87
MIL
-88
MIL
-91
MIL
-92
MIL
-93
MIL
-96
MIL
-103
MIL
-11
0M
IL-1
11
MIL
-11
2
MIL
-117
MIL
-124
MIL
-125
MIL
-126
CLA
Y 11
0 10
0 90
0.2
20.2
30.3
02.8
5
0.1
90.3
70.8
31.4
8
2.8
91.4
30.9
92
.51
3.4
02
.91
2.6
12.9
3
2.6
74.0
12.7
93.4
5
0.9
60.9
91
.25
8.5
7
0.7
61.5
53.5
45.8
2
9.2
05.8
54
.04
7.7
9
9.2
68
.97
8.5
79
.02
8.7
512.1
79.6
110.7
5
1.7
61.8
82.1
912
.11
1.3
83.1
86.6
89
.91
13
.55
10
.69
7.4
611.7
3
12
.23
12.9
712
.71
12
.75
12
.95
17
.20
14.4
31
5.7
2
i 80
2.3
62.3
72.6
31
1.9
5
2.0
24
.91
9.0
31
1.9
6
15.2
315.8
09
.98
12
.22
13
.08
14.2
81
4.4
212.5
7
13.3
717.4
61
5.7
41
7.4
6
70
2.3
82
.27
2.5
410.3
6
2.4
25
.98
9.3
41
1.0
0
14.8
418.4
412.0
311.9
8
13.6
21
4.0
214.7
712.9
2
12
.50
16.1
417.0
618.7
5
SIL
T
60
1.4
41.3
81.4
86
.40
1.9
67
.16
6.7
36
.92
13
.55
16
.39
9.2
410.1
4
12.2
81
2.0
31
2.2
91
3.2
2
12
.03
12.1
014.3
416.4
6
50
0.7
40
.61
0.5
65.0
2
0.6
58
.33
2.1
74.0
4
10.2
310
.61
8.8
43.4
5
3.9
43.2
25.3
411.8
0
9.3
65
.60
5.1
65.0
5
i i 40
2.8
22.3
33.4
215
.11
0.3
54
.00
4.3
79.3
3
15.0
28.2
38
.77
22
.20
17
.16
22.1
521.1
01
9.5
5
16
.49
8.6
312.2
01
0.0
4
30
17.2
812.8
63
0.9
922.5
5
3.7
020.6
123.7
41
6.1
3
3.9
14
.40
16.1
31
3.4
3
13.5
57.3
06.7
44
.38
9.4
13.5
44
.40
1.8
4
20
26
.70
33
.13
40.0
53
.97
46
.51
37.7
131.8
712
.51
1.1
32.5
519.1
73.2
4
0.9
71.0
80.7
40.4
3
0.9
31.3
01.6
30.2
3
SAND
10
19.8
123.5
910.3
60
.87
28
.89
5.1
71.4
45.8
9
0.3
72
.31
2.6
20.9
4
0.3
10.5
50.3
50.2
4
0.2
20.9
51.4
00.1
9
00
9.9
210.2
02
.97
0.2
4
7.3
60
.81
0.2
05
.01
0.0
93.3
00.7
30
.37
0.2
00.5
80.3
60
.17
0.2
20
.91
1.2
40
.06
-10
8.7
26
.36
1.2
40
.0
1.1
30.2
20.0
60.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
00
.00.0
0.0
GR
AVEL
-2
0
-30
-4
0
4.8
91
.80
0.0
0.0
2.6
90.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
1.0
80.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
-50
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
17
APPENDIX C
This ta
ble
cont
ains
th
e sample weight analyzed,
percent gravel (>2.0
mm), percent sand (2
.0 mm>x>0.062
mm)
, percent sil
t (0
.063
mm>x>0.004 mm) ,
percent clay (<0.004 mm)
, th
e verbal-equivalent sediment classification
(She
pard
, 1954), and
the
related method of moments statistics fo
r each sample.
Modes ar
e given in
th
e middle
of whole ph
i in
terv
als.
SAMPLE
NUMB
ER
MIL-
1MIL-2
MIL-
3MIL-4
MIL-5
MIL-
8MIL-9
MIL-
10
MIL-11
MIL-
12MI
L-15
MIL-16
MIL-17
MIL-18
MIL-21
MIL-
22
MIL-
23MI
L-24
MIL-
25MIL-26
MIL-29
MIL-30
MIL-31
MIL-32
MIL-
33MIL-36
MIL-37
MIL-38
WEIG
HT
(GRAMS)
40.883
619.0980
20.020
727.219
9
39.447
719.9553
50.296
919
.357
1
18.5
611
36.263
019
.472
120.134
2
24.4715
33.1314
39.790
923.6225
18.7940
19.281
733.7075
17.1355
34.428
830.416
638.034
733.457
0
30.602
718.4928
18.0440
22.185
8
PERCENT
GRAVEL
23.13
0.00
0.00
1.76
20.33
0.00
0.00
0.00
0.00
1.49
0.00
0.00
0.00
0.00
3.75
0.08
0.00
0.00
0.28
0.00
0.24
4.76
8.37
0.14
1.26
0.00
0.00
0.00
PERCENT
SAND
71.3
87.
3428.14
48.0
3
70.14
16.37
2.92
9.22
13.73
81.6
411
.12
18.49
35.9
475.92
89.9
140
.44
3.20
2.94
80.1
713
.36
83.67
66.88
82.1
375
.31
70.9
94.
187.12
21.7
6
PERCENT
SILT
3.88
60.2
751.05
33.8
3
6.41
57.52
65.4
760.78
57.9
211
.58
61.19
52.0
5
41.3
515
.40
4.09
38.9
9
64.2
567
.31
12.6
259
.28
9.97
17.3
25.80
17.1
9
18.5
860
.65
67.2
951
.69
PERCENT
CLAY
1.61
32.3
820
.81
16.38
3.12
26.1
031
.61
29.9
9
28.3
45.29
27.69
29.46
22.7
18.
682.25
20.50
32.55
29.75
6.93
27.3
6
6.12
11.05
3.70
7.36
9.17
35.17
25.5
826
.55
SEDIMENT
CLASS
GRAV
ELLY
SA
NDCLAYEY SILT
SAND-SILT-CLAY
SILTY
SAND
GRAV
ELLY
SA
NDCLAYEY SILT
CLAYEY SILT
CLAYEY SILT
CLAYEY SILT
SAND
CLAYEY SILT
CLAY
EY SI
LT
SAND
-SIL
T-CL
AYSA
NDSAND
SAND
-SIL
T-CL
AY
CLAY
EY SILT
CLAY
EY SILT
SAND
CLAYEY SILT
SAND
SILT
Y SA
NDSAND
SAND
SILT
Y SA
NDCLAYEY SILT
CLAYEY SILT
SAND-SILT-CLAY
MEDI
AN
(*)
1.19
6.97
5.99
4.03
0.92
6.54
7.07
6.90
6.71
2.16
6.72
6.75
5.92
1.84
1.41
5.48
7.05
6.87
2.27
6.62
1.91
2.23
1.27
2.50
2.41
7.25
6.69
6.51
MEAN
<*
)
0.54
6.89
5.45
4.47
0.91
6.29
7.11
6.81
6.58
2.65
6.61
6.46
5.53
2.96
1.59
5.20
7.06
6.96
2.94
6.38
2.49
3.25
1.43
3.26
3.19
7.19
6.67
6.11
STAN
DARD
DEVIATION
2.56
2.13
2.92
3.06
2.61
2.39
1.70
2.00
2.16
2.31
2.10
2.34
2.75
2.58
1.77
2.83
1.76
1.73
2.39
2.38
2.45
3.02
2.39
2.42
2.80
1.81
1.87
2.57
SKEWNE
SS
0.13
-0.29
-0.2
30.
04
0.56
-0.30
-0.1
4-0.25
-0.25
0.71
-0.2
2-0
.25
-0.04
0.69
1.12
0.02
-0.1
3-0.02
0.71
-0.3
5
0.73
0.28
0.68
0.59
0.43
-0.28
-0.16
-0.2
5
KURT
OSIS
1.36
0.58
-0.7
7-0
.96
2.18
-0.12
0.28
0.28
0.03
1.72
0.00
-0.3
9
-1.24
0.62
7.99
-1.32
0.09
-0.3
01.
190.31
1.59
-0.03
3.44
0.52
-0.20
0.75
0.16
-0.55
MODE
1 (<*)
1.5
6.5
6.5
2.5
1.5
6.5
6.5
6.5
6.5
2.5
6.5
7.5
2.5
1.5
1.5
1.5
6.5
5.5
2.5
6.5
1.5
1.5
1.5
2.5
2.5
6.5
5.5
7.5
MODE
2
MODE 3
(<«
(<fr>
-3.5 1.5
-0.5
7.5
-2.5 1.5
3.5
3.5
6.5
6.5
7.5
6.5
6.5
2.5
18
SAMPLE
NUMBER
MIL-39
MIL-
42MI
L-43
MIL-44
MIL-45
MIL-
46MI
L-47
MIL-
51
MIL-
52MI
L-53
MIL-54
MIL-
56
MIL-57
MIL-
58MI
L-59
MIL-
60
MIL-
61MIL-64
MIL-65
MIL-
66
MIL-
67MI
L-68
MIL-
71MIL-72
MIL-73
MIL-74
MIL-75
MIL-
78
MIL-
79MI
L-80
MIL-81
MIL-
82
MIL-85
MIL-
86MI
L-87
MIL-
88
WEIGHT
(GRA
MS)
18.9951
36.7484
28.0586
20.3281
22.5048
19.6
382
20.0791
33.8
758
27.151
333
.520
320
.671
924.5238
239.
8800
34.3
005
26.3
233
30.1883
29.7
383
37.0
191
18.7
912
20.7
619
21.2285
23.0
914
24.0
719
24.6
204
27.7
646
26.1091
21.2255
20.2
797
38.0
407
38.3424
37.0666
21.6
847
38.8455
31.0710
29.8
459
23.5
967
PERC
ENT
GRAV
EL
0.00
9.13
0.00
0.00
7.20
0.00
0.00
16.81
0.82
28.8
00.00
0.00
26.8
133
.80
8.35
3.91
0.00
0.74
0.00
0.00
0.00
0.54
0.00
0.00
0.00
2.95
0.00
4.61
13.62
8.16
1.24
0.00
3.82
0.22
0.06
0.00
PERC
ENT
SAND
10.7
874.27
65.1
715.97
25.2
712
.76
21.8
660.48
42.74
57.38
15.2
549.69
68.5
742.74
43.3
462.25
59.9
189.49
13.65
22.9
1
29.7
138
.92
49.07
49.0
1
63.3
549
.69
39.56
49.2
7
76.5
382.10
87.8
042.74
86.81
68.30
61.6
248.87
PERC
ENT
SILT
59.6
411
.07
22.8
258
.98
41.3
459
.15
59.50
14.73
37.41
8.98
67.8
638
.47
2.73
15.3
833
.81
22.0
5
28.4
15.76
54.00
54.0
9
41.5
341
.82
35.01
31.7
1
24.3
935
.85
37.8
032
.27
6.92
6.63
7.22
33.7
4
7.05
26.38
27.27
33.9
2
PERC
ENT
CLAY
29.57
5.54
12.02
25.0
5
26.1
828.10
18.6
47.97
19.0
34.
8416
.89
11.8
4
1.89
8.07
14.51
11.79
11.68
4.00
32.3
523
.00
28.75
18.72
15.92
19.2
8
12.25
11.5
122.64
13.86
2.94
3.10
3.74
23.5
2
2.33
5.10
11.0
517
.21
SEDIMENT
CLAS
S
CLAYEY SILT
SAND
SILTY
SAND
CLAYEY SILT
SAND -SI
LT -CLAY
CLAYEY SILT
SANDY
SILT
GRAVELLY SAND
SAND -SI
LT- CLAY
GRAVELLY SAND
CLAYEY SILT
SILTY
SAND
GRAVELLY SA
NDGRAVELLY SAND
SILTY
SAND
SILT
Y SAND
SILTY
SAND
SAND
CLAYEY SILT
SAND
-SIL
T-CL
AY
SAND-SILT-CLAY
SANDY
SILT
SILTY
SAND
SILT
Y SAND
SILTY
SAND
SILT
Y SAND
SAND-SILT-CLAY
SILTY
SAND
GRAVELLY SAND
SAND
SAND
SAND-SILT-CLAY
SAND
SILT
Y SA
NDSILTY
SAND
SILTY
SAND
MEDI
AN
(6)
6.81
1.93
2.83
6.41
6.28
6.64
5.63
1.21
5.03
0.86
5.56
4.04
0.83
1.20
3.88
2.60
2.91
2.33
6.89
6.05
6.62
5.12
41.7
4.43
3.22
3.86
5.62
3.44
1.25
1.24
1.88
5.35
1.21
2.30
2.69
4.28
MEAN
(0)
6.71
2.30
3.97
6.34
5.32
6.55
5.57
1.97
5.08
1.05
5.72
4.43
0.39
1.45
3.88
3.47
4.07
2.57
6.68
6.06
6.17
5.24
4.89
5.16
4.31
4.27
5.53
4.03
1.44
1.53
2.32
5.45
1.48
3.22
3.97
4.65
STAN
DARD
DEVIATION
2.08
2.75
2.65
2.14
3.62
2.11
2.55
3.29
2.77
3.12
2.17
2.76
2.63
3.96
3.52
3.07
2.72
1.89
2.24
2.26
2.55
2.61
2.59
2.61
2.42
2.86
2.62
3.29
2.40
2.25
2.00
2.70
2.02
2.33
2.70
3.02
SKEWNE
SS
-0.2
70.
280.
42-0.10
-0.44
-0.14
-0.19
0.43
0.03
0.47
-0.07
0.07
0.19
0.22
-0.10
0.26
0.29
1.02
-0.26
-0.05
-0.1
50.
050.
180.17
0.47
0.00
0.04
0.02
0.61
0.79
0.95
0.08
0.98
0.52
0.35
0.04
KURTOSIS
0.29
1.14
-0.5
8-0
.55
0.03
-0.3
8-0
.24
-0.1
9
-0.93
0.59
0.14
-1.01
1.63
-0.84
-0.70
-0.76
-0.8
95.
44-0.14
-0.6
9
-1.0
7-0
.90
-1.0
6-1
.26
-0.4
1-0.60
-1.26
-1.13
2.10
3.08
3.88
-1.3
5
4.84
0.08
-1.00
-1.2
6
MODE
1 («
>
6.5
1.5
2.5
6.5
7.5
7.5
5.5
1.5
2.5
1.5
5.5
2.50
1.5
-3.5 3.5
1.5
2.5
2.5
8.5
5.5
6.5
3.5
2.5
2.5
2.5
3.5
2.5
1.5
1.5
1.5
1.5
2.5
1.5
1.5
1.5
2.5
MODE
2
MODE 3
(<»
(<*>
-3.5 6.5
2.5
-3.5
6.5
-1.5 2.5
6.5
-1.5
-4.5
1.5
0.5
-3.5
7.5
6.5
3.5
3.5
6.5
6.5
7.5
6.5
1.5
6.5
7.5
6.5
8.5
4.5
6.5
7.5
19
SAMPLE
WEIG
HT
PERC
ENT
PERC
ENT
PERC
ENT
PERC
ENT
SEDI
MENT
MEDIAN
MEAN
ST
ANDA
RD
SKEWNESS
KURTOSIS
MODE
1
MODE
2
MODE
3
NUMBER
(GRA
MS)
GRAV
EL
SAND
SILT
CLAY______CLASS______&}_____(fl»
DEVIATION____________________(0)
(0)
(0)
MIL-91
21.8545
0.00
20
.51
53.85
25.64
SAND
-SIL
T-CL
AY
6.39
6.28
2.20
-0.06
-0.8
5 7.
5 3.
5MI
L-92
19
.970
2 0.00
20.7
9 61.25
17.97
SAND
Y SI
LT
6.12
5.81
2.43
-0.32
0.14
6.5
MIL-
93
24.1864
0.00
47.42
40.09
12.4
9 SI
LTY
SAND
4.29
4.57
2.
65
0.14
-1.13
1.5
6.5
MIL-
96
25.5
972
0.00
40.17
37.7
9 22
.04
SAND-SILT-CLAY
5.63
5.57
2.54
0.04
-1.1
7 3.
5 7.5
MIL-
103
22.2384
0.00
32.18
42.92
24.9
0 SAND-SILT-CLAY
6.12
5.95
2.46
-0.01
-1.15
3.5
6.5
MIL-110
21.8067
0.00
31
.65
43.5
4 24
.80
SAND-SILT-CLAY
6.22
6.
02
2.40
-0.05
-0.9
7 3.
5 7.5
MIL-
111
23.3714
0.00
29.29
46.8
1 23.89
SAND-SILT-CLAY
6.21
6.04
2.31
-0.03
-0.9
8 3.5
6.5
MIL-112
22.0
762
0.00
24.7
8 50.51
24.71
SAND-SILT-CLAY
6.02
6.09
2.
24
0.04
-1.0
1 3.
5 5.
5 8.5
MIL-117
22.5253
1.08
27
.27
47.2
7 24.38
SAND-SILT-CLAY
6.02
5.91
2.49
-0.1
6 -0.10
3.5
7.5
MIL-124
18.2
533
0.00
15.33
51.3
0 33
.37
CLAYEY SI
LT
7.05
6.
72
2.29
-0.34
0.08
7.5
3.5
MIL-125
19.3974
0.00
20
.87
52.3
0 26
.82
SAND-SILT-CLAY
6.56
6.30
2.37
-0.2
6 -0
.19
6.5
3.5
MIL-126
18.8
722
0.00
12.36
57.7
2 29
.92
CLAYEY SI
LT
6.86
6.78
1.97
-0.14
-0.4
8 6.5
3.5
20
