Juana Lopez (based on correlation to log 61 of Molenaar and Cobban,1991) ? K? ? ? 8400 2500 13200 5500 5000 6000 7000 8000 9000 10000 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 10000 11000 13000 12000 11000 10000 9000 8000 8000 9000 10000 11000 12000 12000 11000 10000 9000 8000 7000 6000 5000 10000 11000 12000 13000 14000 15000 16000 17000 1.17 1.90 1.30 0.78 1.41 0.90 0.73 Ro isoline 1.10 Ro isoline 1.10 Ro isoline 0.6 Ro isoline 1.35 Ro isoline 1.35 Ro isoline 0.73 0.60 Petro Lewis Coal 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 Company USA 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 Getty Jack'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 California NGC No. 42-23 Federal sec. 23, T. 14 S., R. 24 E. G.L. 7326 Devon Corporation Federal 1-30 sec. 30, T. 6 S., R. 102 W. G.L. 7380 Chevron Stone 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 Resources Indian Canyon 2 sec. 14, T. 6 S., R. 75 W. G.L. 7233 (correlations traced from Johnson, 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, carbonaceous shale, 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 C GR C GR C GR C GR S GR C GR C GR C GR C GR C GR C Drill-Hole Information 5 mi Distance between drill holes (in miles) Distance between data points Well-log information Trace of natural-gamma (gamma ray) log (GR), conductivity log (C), and sonic log (S) GR C, S Company Well name Location 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 Members and 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 Green River Colo r a d o R i v e r Great Salt Lake Utah Lake 39° 38° 40° 41° 109° 110° 111° 112° 108° 107° 106° Flaming Gorge Reservoir Lake Granby 40 40 Salina Indian Canyon Keel Ranch Stone Canyon Jack's Canyon Agency Draw Texaco-Skyline NGC Federal 1-30 Coal Gulch Winter Flats USA 1-8 MR Somerville Seep Ridge Index Map 0 50 Miles UTAH COLORADO U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY DIGITAL DATA SERIES DDS–69–B CHAPTER 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 (R o IN PERCENT) By Mark A. Kirschbaum 2002 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 (R By Mark A. Kirschbaum 2002 Chapter 6 Chapter 6 DIGITAL DATA SERIES DDS–69–B CHAPTER 6, PLATE 1 U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY