Location and status of compilation mapping program. Southwest Oregon block of statewide digital compilation is shown in pink. Completed blocks are shown in shades of green; pend-ing blocks are shown in shades of gray. Orange polygons are urban areas.

101

42

227

5

199

140

234

238

62

62

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DOUGLASDOUGLASDOUGLASDOUGLASDOUGLASDOUGLASDOUGLASDOUGLASDOUGLAS

JACKSONJACKSONJACKSONJACKSONJACKSONJACKSONJACKSONJACKSONJACKSON

Riddle

Canyonville

Powers

Port Orford

Glendale

Paisley

Shady Cove

Chiloquin

Butte Falls

Eagle Point

Grants PassGold Beach

Rogue River

Central Point

Medford

Jacksonville

Phoenix

Klamath Falls

Talent

AshlandCave JunctionBonanza

Lakeview

Brookings

Merrill

Malin

KLAMATHKLAMATHKLAMATHKLAMATHKLAMATHKLAMATHKLAMATHKLAMATHKLAMATH

CURRYCURRYCURRYCURRYCURRYCURRYCURRYCURRYCURRY

JOSEPHINEJOSEPHINEJOSEPHINEJOSEPHINEJOSEPHINEJOSEPHINEJOSEPHINEJOSEPHINEJOSEPHINE

LAKELAKELAKELAKELAKELAKELAKELAKELAKE

43

43

43

43

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4242

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Digital map compiled and produced using MapInfo GIS software version 8.0.Shaded relief basemap from USGS 10m DEM.Projection is Oregon Lambert, 1997, International Feet.

0 10 20 kilometersScale 1:200,000

DISCUSSION

The compilation consists of a spatial database of geographic information system (GIS) files depicting the surface geology of the area. The data were derived from 66 source maps (see Figure 1 and Table 1) and include 1923 unique units defined by the vari-ous authors. To help make sense of this large number of units, the authors have assigned each original unique unit to one of 828 geo-logic merge units based on age, lithology, and stratigraphy. The map presented here is a further simplification of those 828 units. This map was compiled at a nominal scale of 1:100,000 on a mosaic of 1:100,000 digital raster graphic (DRG) base maps. It is hard to make a visually meaningful plot of the geology on the original base map at any reasonable size, so the map pre-sented here has a simplified base map and a scale of 1:200,000. The GIS data used to produce this map will be published separately as DOGAMI publication Oregon Geologic Compila-tion Map, release 4 (OGDC-4) and will include a Microsoft Access database that contains unit descriptions by the original au-thors for each of the 1923 unique units. For a discussion of the methodology used to create the digital compilation map of Oregon, see Ferns and others (2006). Data for the northeast, southeast, and central portions of the compilation are available as OGDC-3 (Niewendorp and others, 2007).

REFERENCES

Ferns, M. L., and others, 2006, Oregon statewide geologic map data: A pilot project where digital techniques changed the geo-logic map compilation process and product, Oregon Department of Geology and Mineral Industries open-file report O-06-03, 4 p., poster.

Niewendorp, C. A., and others, 2007, Oregon Geologic Data Compilation, release 3, northeast, southeast, and central Oregon, Oregon Department of Geology and Mineral Industries digital data series OGDC-3, CD-ROM.

Neogene Volcanic RocksMiocene to Pliocene

basalt to rhyolite flows, dikes, and sillsvolcaniclastic rocksYolla Bolly Terrane

Jurassic to Cretaceous

melange, intrusive, metamorphic, and volcanic rocksDothan Formation marine sedimentary rocks

Picket Peak TerraneJurassic to Cretaceous

Colebrook schist metamorphic rocksserpentinite melange and ultramafic rocks

Sixes TerraneJurassic to Cretaceous

melange

Snow Camp TerraneJurassic to Cretaceous

Coast Range ophioliteMyrtle Group marine sedimentary rocks, unassigned

Paleogene Marine Sedimentary RocksEocene

Tyee Formation

Early Winema Volcanic Field Miocene to Pliocene

basalt to rhyolite flows vents, plugs, and dikestuffaceous sedimentary rocks and volcaniclastic rocks

Winema Volcanic FieldPliocene

basalt to trachyandesite flows and ventstuffaceous sedimentary rocks and volcaniclastic rocksYamsay Mountain Volcano

Quaternary Winema VolcanicsQuaternary

tuffaceous terrestrial sedimentary rocksbasalt to andesite volcanoes and flows

High Lava Plains VolcanicsMiocene to Pliocene

basalt to rhyolite flows and dikesvolcaniclastic rocks

Paleogene Volcanic RocksEocene to Oligocene

mafic to felsic flows and intrusionsvolcaniclastic rocks

Columbia River Basalt GroupMiocene

Steens Basalt

Neogene Sedimentary RocksMiocene to Pliocene

tuffaceous terrestrial sedimentary rocks

Western Klamath TerraneTriassic to Jurassic

Briggs Creek sub-terrane: amphiboliteDry Butte sub-terrane: meta igneous rocksElk sub-terrane: Humbug Mountain Formation, ultramafic rocks and melangeRogue Valley sub-terrane: marine sedimentary rocks, mafic igneous rocksSmith River sub-terrane: Josephine ophiolite ultramafic rocksIllinois River plutonic complex: mafic intusive and metamorphic rocksGalice Formation: marine sedimentary rocksunassigned mafic igneous and metamorphic rocks, melange

Applegate TerraneTriassic to Jurassic

Applegate amphibolite metamorphic rock and melangeMay Creek schist metamorphic rocks and melangeunassigned intrusive rocksSquaw Mountain pluton

Nevadan Intrusive RocksJurassic to Cretaceous

Buckskin Peak plutonsGrayback plutonsGold Hill plutonsGrants Pass plutonsJacksonville plutonsunassigned plutons and minor intrusions

Gold Beach TerraneJurassic

Hunters Cove FormationOtter Point Formation and unassigned sedimentary rocks

Sexton Mountain TerraneTriassic to Jurassic

Greenback melangeunassigned marine sedimentary and volcanic rocksSexton Mountain ophiolite

Condrey Mountain TerraneJurassic

schist and serpentinite

Rocks of the Klamath Mountains

Early High Cascades VolcanicsPliocene to Miocene

Basalt to andesite flows and minor volcaniclastic rocks

Late High Cascades VolcanicsQuaternary

Mazama Volcanounassigned basalt to andesite flowsbasalt, basaltic andesite, and andesite volcanoes

Late Western Cascades VolcanicsOligocene to Miocene

mafic to felsic dikes and flows, volcaniclastic sedimentary rocks and tuffs

Early Western Cascades VolcanicsEocene to Oligocene

Colestine Formation volcaniclastic rocks and flowsunassigned mafic to felsic dikes and flowstuff of Bond CreekTuff of Mosser Mtn

Little Butte VolcanicsOligocene to Miocene

Heppsie Formation volcanic and volcaniclastic rocksWasson Formation volcanic and volcaniclastic rocksunassigned volcanic and volcaniclastic rocksRoxy Formation volcanic rocks

egnaR dna nisaB nogerO dna snialP avaL hgiH eht fo skcoRegnaR edacsaC eht fo skcoR

Umpqua Group Paleocene to Eocene

Whitetail Ridge Formation sandstone and siltstoneTenmile Formation turbidites and sandstoneBushnell Rock Formationunassigned turbidites, sandstone, and conglomerate

Mitchell GroupCretaceous

Hornbrook Formation: marine sedimentary rocks

Paleogene Sedimentary RocksPaleocene to Oligocene

tuffaceous terrestrial sedimetary rocksPayne Cliffs Formation:terrestrial sandstone and conglomerate

Quaternary Surficial Depositsstream alluvium, terraces, fansbeaches, dunes, coastal terracestill, colluvium, lateritelake, marsh, playa, and pluvial lake depositslandslide deposits

Sedimentary Rocks of Western and Eastern Oregon

GEOLOGIC MERGE UNIT DESCRIPTIONS

melange and intrusive rocks

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Figure 1. Index map showing source map locations and map reference IDs. Reference ID publications are given in Table 1.

Key (Reference IDs) for source index mapApplRN1950BacoCRUnpubBaldEM1971BaldEM1973BeauJD1976BrikTH1983BrowME1982CornJH1971CunnCT1979DiggMF1991DonaMM1991DonaMM1992

JenkMDUnpubJohaNP1972JohnMG1979KentRC1972MartAB1989MertSAUnpubMuntJK1969MurrRB2001MurrRBUnpubaMurrRBunpubBNiemAR1990OlivJA1981PageNJ1977

HladFR1998HladFR1999

DonaMM1993DonaMM1995aDonaMM1995bGrayF1980GrayF1982HaddGH1959HeriCW1981HladFR1992

HladFR1996

HladFR1993HladFR1994

PageNJ1981PertRK1976PeteNV1980RampL1961RampL2004SherDR1992SMITJG1982ThomTH1981TravPL1977WalkGW1963WalkGW1980bWeisWK1984RampL1977RampL1986

WellFG1953WellRE1975WileTJ1991WileTJ1993aWileTJ1993bplate1WileTJ2006aWileTJ2006bWileTJ2006cWileTJUnpubYuleJD1996plate10YuleJD1996plate11YuleJD1996plate2YuleJD1996plate8YuleJD1996plate9

Table 1. Source map references.Reference ID First Author Publication Date Publication Title OriginatorApplRN1950 Appling, RN 1950 Economic geology of the Brattain mining area, Paisley, Oregon University of OregonBacoCRUnpub Bacon, CR unpublished Geologic map of Mount Mazama and Crater Lake caldera, Oregon U.S. Geological SurveyBaldEM1971 Baldwin, EM 1971 Geology of the Powers quadrangle, Oregon Oregon Dept. of GeologyBaldEM1973 Baldwin, EM 1973 Geology and mineral resources of Coos County, Oregon Oregon Dept. of GeologyBeauJD1976 Beaulieu, JD 1976 Land use geology of western Curry County, Oregon Oregon Dept. of GeologyBrikTH1983 Brikowski, TH 1983 Geology and petrology of Gearhart Mountain: a study of calc-alkaline volcanism east of the Cas nogerO fo ytisrevinU nogerO ni sedacBrowME1982 Brownfield, ME 1982 Geologic map of the Langlois quadrangle, Oregon Oregon Dept. of GeologyCornJH1971 Cornell, JH 1971 Geology of the northwest quarter of the Canyonville quadrangle, Oregon University of OregonCunnCT1979 Cunningham, CT 1979 Geology and geochemistry of a massive sulfide deposit and associated volcanic rocks, Blue Cre ytisrevinU etatS nogerO nogerO nretsewhtuos ,tcirtsiD ke

lacigoloeG .S.U nogerO ,ytnuoC ekaL ,aerA ydutS ssenredliW niatnuoM olbaiD eht fo pam cigoloeG 1991 FM ,selggiD 1991FMggiD Survey.S.U nogerO ,ytnuoC noskcaJ ,skcor detaler dna tsihcS keerC yaM eht fo trap gniwohs pam cigoloeG 1991 MM ,otanoD 1991MManoD Geological Survey

lacigoloeG .S.U ainrofilaC dna nogerO ,elgnardauq keerC yrrebraC eht fo pam cigoloeg yranimilerP 2991 MM ,otanoD 2991MManoD SurveyuS lacigoloeG .S.U ainrofilaC dna nogerO ,elgnardauq sekaL wauqS eht fo pam cigoloeg yranimilerP 3991 MM ,otanoD 3991MManoD rvey

lacigoloeG .S.U nogerO ,ytnuoC noskcaJ ,elgnardauq hcuR eht fo trap fo pam cigoloeg yranimilerP 5991 MM ,otanoD a5991MManoD SurveyDonaMM1995b Donato, MM 1995 Preliminary geologic map of the southeastern part of the Tallowbox Mountain quadrangle, Jackson C yevruS lacigoloeG .S.U nogerO ,ytnuo

.S.U nogerO nretsewhtuos ,aerA ssenredliW sispoimlaK ,kaeP pucniT ta xelpmoc suoengi eht fo ygoloeG 0891 F ,yarG 0891FyarG Geological SurveylacigoloeG .S.U nogerO ,seitnuoC salguoD dna ,yrruC ,sooC ,ssenredliW eugoR dliW eht fo pam cigoloeG 2891 F ,yarG 2891FyarG Survey

HaddGH1959 Haddock, GH 1959 Geology of the Cougar Peak volcanic area, Lake County, Oregon Washington State UniversityHeriCW1981 Hering 1981 Geology and petrology of the Yamsay Mountain complex, south-central Oregon: A study of bimodal volcan nogerO fo ytisrevinU msi

.tpeD nogerO nogerO ,ytnuoC noskcaJ ,elgnardauq evoC ydahS eht fo secruoser larenim dna ygoloeG 2991 RF ,ykdalH 2991RFdalH of Geologyo .tpeD nogerO nogerO ,ytnuoC noskcaJ ,elgnardauq doeLcM eht fo pam secruoser larenim dna ygoloeG 3991 RF ,ykdalH 3991RFdalH f Geology

HladFR1994 Hladky, FR 1994 Geologic map of the Lakecreek quadrangle, Jackson County, Oregon Oregon Dept. of GeologyD nogerO nogerO ,ytnuoC noskcaJ ,elgnardauq kaeP ylzzirG eht fo pam secruoser larenim dna ygoloeG 6991 RF ,ykdalH 6991RFdalH ept. of Geology

eD nogerO nogerO ,ytnuoC noskcaJ ,elgnardauq noynaC oiR eht fo pam secruoser larenim dna ygoloeG 8991 RF ,ykdalH 8991RFdalH pt. of GeologyeD nogerO nogerO ,ytnuoC noskcaJ ,elgnardauq orobsnworB eht fo pam secruoser larenim dna ygoloeG 9991 RF ,ykdalH 9991RFdalH pt. of Geology

ogerO nogerO ,ytnuoC htamalK ,nisaB htamalK reppU eht fo trap fo pam noitalipmoc cigoloeG dehsilbupnu DM ,skneJ bupnUDMkneJ n Dept. of GeologyJohaNP1972 Johannesen, NP 1972 The geology of the northeast quarter of the Bone Mountain quadrangle, Oregon University of OregonJohnMG1979 Johnson, MG 1979 Preliminary geologic map of the metavolcanic and associated rocks in part of the Canyonville, Days Creek, and Glendale quadrangles, Oregon U.S. Geological SurveyKentRC1972 Kent, RC 1972 The geology of the southeast quarter of the Bone Mountain quadrangle, Oregon Portland State UniversityMartAB1989 Martin, AB 1989 Geology of the Gold Note Mine, a volcanogenic massive sulfide deposit in the Klamath Mountains, s ohadI fo ytisrevinU nogerO tsewhtuoMertSAUnpub Mertzman, SA unpublished Geologic mapping of the High Cascade Mountains, south-central Oregon Franklin and Marshall CollegeMuntJK1968 Muntzert, JK 1968 Geology and mineral deposits of the Braltain District, Lake County, Oregon Oregon State University

peD nogerO nogerO ,seitnuoC noskcaJ dna salguoD ,elgnardauq niatnuoM rethciR eht fo pam cigoloeG 1002 BR ,yarruM 1002BRrruM t. of GeologyMurrRBUnpubA Murray, RB unpublished Compilation and synthesis of geologic mapping for the upper Illinois River basin, Josephi ygoloeG fo .tpeD nogerO nogerO ,seitnuoC yrruC dna enMurrRBUnpubB Murray, RB unpublished Compilation and synthesis of geologic mapping for the Williams Creek basin, Josephine an ygoloeG fo .tpeD nogerO nogerO ,seitnuoC noskcaJ dNiemAR1990 Niem, AR 1990 Geology and oil, gas, and coal resources, southern Tyee Basin, Southern Tyee Basin, southern Coast ygoloeG fo .tpeD nogerO nogerO ,egnaR

nU nogerO ,ytnuoC ekaL ,aera talF ssoM eht fo scitengamoelap dna ,ygolortep ,yhpargitarts ehT 1891 LAJ ,arievilO 1891AJvilO iversity of Nevada RenoPageNJ1977 Page, NJ 1977 Preliminary reconnaissance geologic map of the Wimer quadrangle, Oregon U.S. Geological SurveyPageNJ1981 Page, NJ 1981 Geologic map of the Kalmiopsis Wilderness Area, Oregon U.S. Geological Survey

P nogerO tsewhtuos ,elgnardauq ettuB namhctuD eht fo retrauq tsaehtron eht fo ygoloeg larutcurtS 6791 KR ,uttreP 6791KRtreP ortland State University.tpeD nogerO nogerO ,aera weivekaL eht fo laitnetop ecruoser lamrehtoeg dna ygoloeg yranimilerP 0891 VN ,nosreteP 0891VNeteP of Geology

RampL1961 Ramp, L 1961 Geologic map of Babyfoot-Little Chetco area, Curry County, Oregon Oregon Dept. of GeologyRampL1977 Ramp, L 1977 Geology, mineral resources, and rock material of Curry County, Oregon Oregon Dept. of GeologyRampL1986 Ramp, L 1986 Reconnaissance geologic map of the Marial quadrangle, southwestern Oregon U.S. Geological SurveyRampL2004 Ramp, L 2004 Geology and mineral resources of Josephine County, Oregon Oregon Dept. of GeologySherDR1992 Sherrod, DR 1992 Geologic map of the west half of the Klamath Falls 1 by 2 degree quadrangle, south-central Orego yevruS lacigoloeG .S.U n

loeG .S.U ainrofilaC dna nogerO ,elgnardauq eerged 2 yb 1 drofdeM eht fo pam cigoloeg yranimilerP 2891 GJ ,htimS 2891GJtimS ogical SurveyatS nogerO nogerO ,ytnuoC ekaL ,tcirtsiD gniniM slliH etoyoC eht fo stisoped larenim dna ygoloeG 1891 HT ,samohT 1891HTmohT te University

TravPL1977 Travis, PL 1977 Geology of the area near the north end of Summer Lake, Lake County, Oregon University of OregonWalkGW1963 Walker, GW 1963 Reconnaissance geologic map of the eastern half of the Klamath Falls (AMS) quadrangle, Lake and K yevruS lacigoloeG .S.U nogerO ,seitnuoC htamal

goloeG .S.U nogerO ,ytnuoC ekaL ,aera muinaru weivekaL eht fo ygoloeg eht no troper yranimilerP 0891 WG ,reklaW b0891WGklaW ical SurveyWeisKW1984 Weissenburger, KW 1984 Lakeview uranium area, Lake County, Oregon; constraints on genetic modelling from a district- ytisrevinU drofnatS evitcepsrep elacsWellFG1953 Wells, FG 1953 Geology of the Galice quadrangle, Oregon U.S. Geological Survey

vinU nogerO ,ytnuoC ekaL ,aera gnidnuorrus eht dna xelpmoc etiloyhr kaeP ekarD eht fo ygoloeg ehT 5791 ER ,slleW 5791ERlleW ersity of OregongerO nogerO ,ytnuoC noskcaJ ,elgnardauq niatnuoM llewsoB eht fo pam secruoser larenim dna ygoloeG 1991 JT ,yeliW 1991JTeliW on Dept. of GeologygerO nogerO ,ytnuoC noskcaJ ,elgnardauq egdiR dnalevelC eht fo pam secruoser larenim dna ygoloeG 3991 JT ,yeliW a3991JTeliW on Dept. of Geology

WileTJ1993bplate1 Wiley, TJ 1993 Preliminary geologic map of the Medford East, Medford West, Eagle Point, and Sams Valley quadrangles, Jackson County, Oregon Oregon Dept. of GeologyWileTJ2006a Wiley, TJ 2006 Preliminary geologic map of the Wimer and McConville Peak quadrangles, Jackson and Josephine Coun ygoloeG fo .tpeD nogerO nogerO ,ytWileTJ2006b Wiley, TJ 2006 Preliminary geologic map of the Sexton Mountain, Murphy, Applegate, and Mount Isabelle 7.5' quadrangles, Jackson and Josephine County, Oregon Oregon Dept. of GeologyWileTJ2006c Wiley, TJ 2006 Preliminary geologic map of the Gold Hill and Rogue River 7.5' quadrangles, Jackson and Josephine ygoloeG fo .tpeD nogerO nogerO ,ytnuoC

rO ainrofilaC dna nogerO ,elgnardauq etunim 06x03 drofdeM eht fo pam cigoloeg yranimilerP dehsilbupnu JT ,yeliW bupnuJTeliW egon Dept. of GeologyYuleJD1996plate10 Yule, JD 1996 Geologic and tectonic evolution of Jurassic marginal ocean basin lithosphere, Klamath Mounta ygolonhceT fo etutitsnI ainrofilaC nogerO ,sniYuleJD1996plate11 Yule, JD 1996 Geologic and tectonic evolution of Jurassic marginal ocean basin lithosphere, Klamath Mounta ygolonhceT fo etutitsnI ainrofilaC nogerO ,sniYuleJD1996plate2 Yule, JD 1996 Geologic and tectonic evolution of Jurassic marginal ocean basin lithosphere, Klamath Mountai ygolonhceT fo etutitsnI ainrofilaC nogerO ,snYuleJD1996plate8 Yule, JD 1996 Geologic and tectonic evolution of Jurassic marginal ocean basin lithosphere, Klamath Mountai ygolonhceT fo etutitsnI ainrofilaC nogerO ,snYuleJD1996plate9 Yule, JD 1996 Geologic and tectonic evolution of Jurassic marginal ocean basin lithosphere, Klamath Mountains, ygolonhceT fo etutitsnI ainrofilaC nogerO

NOTICEThis product is for informational purposes and may not have been prepared for, or be suitable for legal, engineering or surveying purposes. Users of this information should review or consult the primary data and information sources to ascertain the suitability of the information. The views and conclusions contained in this document are those of the authors and should not be interpreted as

necessarily representing the official policies, either expressed or implied, of the U.S. Government.

Preliminary Geologic Compilation Map of the Southwest Portion of Oregon2007

STATE OF OREGONDEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES

VICKI S. MCCONNELL, STATE GEOLOGISTO

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OPEN-FILE REPORT 07-16Preliminary Geologic Compilation Map of the Southwest Portion of Oregon

By Margaret D. Jenks, Stanley A. Mertzman, Thomas J. Wiley, Paul E. Staub, Marina Drazba, Lina Ma, Clark A. Niewendorp, and Ian P. Madin

This geologic map was funded in part by the USGS National Cooperative Geologic Mapping Program through STATEMAP award #06HQAG0027. Additional funding came from the State of Oregon and

the USDA Forest Service.