Juana Lopez (based on correlation to log 61 of Molenaar and Cobban,1991)

?

K?

??

8400

2500

13200

5500

5000

6000

7000

8000

9000

1000

0

6000

5000

4000

3000

2000

2000

3000

4000

5000

6000

6000

5000

4000

3000

2000

1000

2000

3000

4000

5000

6000

8000

7000

6000

5000

4000

5000

6000

7000

8000

9000

9000

8000

7000

6000

8000

9000

1000

011

000

1300

012

000

1100

010

000

9000

8000

8000

9000

1000

011

000

1200

0

1200

011

000

1000

090

0080

0070

0060

0050

00

1000

011

000

1200

013

000

1400

015

000

1600

017

000

1.17

1.90

1.30

0.78

1.41

0.90

0.73 Ro isoline

1.10 Ro isoline1.10 Ro isoline

0.6 Ro isoline

1.35 Ro isoline1.35 Ro isoline

0.73

0.60

Petro LewisCoal Gulch 15-9

sec. 9, T. 8 S., R. 101 W.G.L. 6552

Belco Exploration Co.Winter Flats 1-10-100

sec. 10, T. 9 S., R. 100 W.G.L. 7101

Coors Energy CompanyUSA 1-8 MR

sec. 8, T. 10 S., R. 99 W.G.L. 6460

Dyco Petroleum Co.Somerville 1

sec. 26, T. 11 S., R. 97 W.G.L. 9991

Celeron Oil and Gas Co.Agency Draw #16-3

sec. 3, T. 13 S., R. 20 E.G.L. 6038

GettyJack's Canyon

sec. 33, T. 12 S., R. 16 E.G.L. 6890

Texaco Inc.Texaco-Skyline #1 Gov.

sec. 27, T. 13 S., R. 21 E.G.L. 5662

Texaco Inc.Seep Ridge Unit No. 2

sec. 3, T. 14 S., R. 22 E.G.L. 6834

Natural Gas Corporation of CaliforniaNGC No. 42-23 Federal

sec. 23, T. 14 S., R. 24 E.G.L. 7326

Devon CorporationFederal 1-30

sec. 30, T. 6 S., R. 102 W.G.L. 7380

ChevronStone Canyon

sec. 29, T. 12 S., R. 15 E.G.L. 6596

Mtn Fuel Supply Co.Keel Ranch No. 1

sec. 16, T. 12 S., R. 13 E.G.L. 6755

Energy ResourcesIndian Canyon 2

sec. 14, T. 6 S., R. 75 W.G.L. 7233

(correlations traced fromJohnson, Chapter 10, this CD-ROM)

????

?

Bluecastle Sandstone

Sego Sandstone

Mancos Shale

Castlegate Sandstone (fluvial)

Blackhawk Formation

Bluecastle Tongue of the Castlegate Sandstone

Neslen Formation

Buck Tongue of Mancos Shale

Neslen Formation

Iles (Mt Garfield) Formation

Williams Fork Formation equivalent

Upper shoreface and tidal sandstone

Offshore mudrock and shale

Depositional Interpretations

Coastal plain, fluvial sandstone, mudrock, carbonaceousshale, and coal; includes some tidally influenced rocks

Alluvial plain, fluvial sandstone, and mudrock

Lower shoreface/offshore sandstone and mudrock

15.7 mi 11 mi 7.9 mi 23.6 mi 7.0 mi 6.3 mi 13.4 mi 20.5 mi 11.8 mi 8.7 mi 15.7 mi 8.7 mi

GR C

GR C

GR CGR C

GR C

GR C

GR S

GR C

GR C GR C GR CGR C

GR C

Drill-Hole Information

5 mi

Distance between drill

holes (in miles)

Distance between data pointsWell-log information

Trace of natural-gamma (gamma ray) log (GR), conductivity log (C), and sonic log (S)

GR C, S

CompanyWell nameLocation

Texaco Federal 1

sec. 1, T. 1 S., R. 111 W.Surface elevation(ground level, in feet)

G.L 1000

2700

2800

Marker bed

Perforated zone

Vitrinite reflectance estimates based on Nuccio and Roberts (Chapter 4, this CD-ROM)

Mancos B Sandstone

0.90

Rollins Sandstone Member

Coon Springs Sandstone bed of Molenaar and Cobban (1991)

Juana Lopez Member of Molenaar and Cobban (1991)

*Corcoran /Cozzette Membersand uppper Sego Sandstone, undivided

(see correlations from Hettinger and Kirschbaum, Chapter 12, this CD-ROM)

*

Northwest Southeast

0.73

15

80

70

Glenwood Springs

Craig

Grand Junction

Rifle

Nephi

Vernal

Salt Lake City Uinta and Piceance Basins

Gre

en R

iver

Color

ado River

Great Salt Lake

UtahLake

39°

38°

40°

41° 109°110°111°112°108° 107° 106°

Flaming Gorge Reservoir

LakeGranby

40

40

Salina

Indian Canyon

Keel RanchStone Canyon

Jack's Canyon Agency DrawTexaco-Skyline

NGCFederal 1-30

Coal Gulch

Winter FlatsUSA 1-8 MR

Somerville

Seep Ridge

Index Map

0 50 Miles

UTAH COLORADO

U.S. DEPARTMENT OF THE INTERIORU.S. GEOLOGICAL SURVEY

DIGITAL DATA SERIES DDS–69–BCHAPTER 6, PLATE 1

STRATIGRAPHIC CROSS SECTION OF THE MANCOS SHALE AND ADJACENT STRATA IN THE UINTA AND PICEANCE BASINS, UTAH AND COLORADO, SHOWING GENERALIZED CORRELATIONS OF MAJOR STRATIGRAPHIC UNITS AND VITRINITE REFLECTANCE LINES (Ro IN PERCENT)By

Mark A. Kirschbaum2002

STRATIGRAPHIC CROSS SECTION OF THE MANCOS SHALE AND ADJACENT STRATA IN THE UINTA AND PICEANCE BASINS, UTAH AND COLORADO, SHOWING GENERALIZED CORRELATIONS OF MAJOR STRATIGRAPHIC UNITS AND VITRINITE REFLECTANCE LINES (RBy

Mark A. Kirschbaum2002 Chapter 6Chapter 6

DIGITAL DATA SERIES DDS–69–BCHAPTER 6, PLATE 1

U.S. DEPARTMENT OF THE INTERIORU.S. GEOLOGICAL SURVEY