Margaret Ellis

Associate Science Center Director

Publications

1.   Stamm, M.E., 1979, Examination and potential for development of Flagstaff Limestone in the Manti Division of Manti-LaSal National Forest:  U.S. Forest Service Administrative Report, 20 p. 

2.   Hansen, D.E., Spencer, Frank, and Stamm, M.E., 1980, Geophysical and lithologic logs of six test holes drilled during 1979 in the Como West and Elmo quadrangles, Carbon County, Wyoming, 1980:  U.S. Geological Survey Open-File Report 80-899.

3.   Hansen, D.E., Weaver, Jean, Ellis, M.S., and Williamson, Courtney, 1981, Geophysical and lithologic logs of coal test holes drilled during 1980 in the Pierce Reservoir and Bengough Hill quadrangles, Albany County, Wyoming:  U.S. Geological Survey Open-File Report 82-315. 

4.   Ellis, M.S., and Gaskill, D.L., 1981, Tongue Mesa coalfield, Colorado: Summary report for inclusion in published results of International Geologic Correlations Program No. 166--Global correlations of coal-bearing formations.

5.   Ellis, M.S., and Hopeck, John, 1982, Geologic map of Bitter Creek Well, Harley Dome, Westwater 4 SE, and Westwater 4 SW quadrangles, Utah:  U.S. Geological Survey Open-File Report 82-741, superseded by MF-1800.

6.   Ellis, M.S., and Freeman, V.L., 1984, Geological map and cross sections of the Carbondale 30' X 60' quadrangle, west-central Colorado:  U.S. Geological Coal Investigations Map C-97-A, scale 1:100,000.

7.   Ellis, M.S., and Freeman, V.L., 1984, Coal correlation in the Carbondale quadrangle, Colorado, in Geological Survey Research, Fiscal Year 1981:  U.S. Geological Survey Professional Paper 1375, p. 18.

8.   Ellis, M.S., and Hopeck, John, 1985, Geologic map of Bitter Creek Well, Harley Dome, Westwater 4 SE, and Westwater 4 SW quadrangles, Utah, showing coal beds in the Dakota Sandstone:  U.S. Geological Survey Miscellaneous Field Studies Map MF-1800, scale 1:50,000. (Supersedes U.S. Geological Survey Open-File Report 82-741.)

9.   Eakins, Wynn, and Ellis, M.S., 1986, Coal resources of the Castle Rock 1/2 X 1-degree quadrangle and adjoining area, Colorado:  Colorado Geological Survey Resource Series 25, scale 1:100,000. 

10.  Ellis, M.S., 1987, Coal resources in Roehler, H.W., and Martin, P.L., eds., Geological investigations of the Vermilion Creek coal bed in the Eocene Niland tongue of the Wasatch Formation, Sweetwater County, Wyoming:  U.S. Geological Survey Professional Paper 1314-L, p. 191-202. 

11.  Ellis, M.S., Freeman, V.L., and Donnell, J.R., 1987, Coal correlations and cross sections in the Carbondale 30' X 60' quadrangle, west-central Colorado:  U.S. Geological Survey Coal Investigation Map C-97-B, scale 1:100,000. 

12.  Ellis, M.S., Gaskill, D.L., and Dunrud, C.R., 1987, Geologic map of the Paonia and Gunnison area, west-central Colorado:  U.S. Geological Survey Coal Investigations Map C-109, scale 1:100,000.

13.  Ellis, M.S., and Kelso, B.S., 1987, Cross sections showing stratigraphic framework of Upper Cretaceous Dakota Sandstone, Mancos Shale, Mesaverde Group, and Mesaverde Formation, and Lower Tertiary Wasatch Formation, west-central Piceance basin, Garfield County, Colorado:  U.S. Geological Survey Miscellaneous Field Studies Map MF-2008-A, scale 1:100,000.

14.  Ellis, M.S., and Gabaldo, Virginia, 1989, Geologic map and cross sections of parts of the Grand Junction and Delta 30' X 60' quadrangles, west-central Colorado:  U.S. Geological Survey Coal Investigations Map C-124. Scale 1:100,000. 

15.  Ellis, M.S., 1989, Geologic map of the Powder River Basin and surrounding area, Wyoming, Montana, South Dakota, North Dakota, and Nebraska:  U.S. Geological Survey Miscellaneous Field Studies Map MF-2095, scale 1:500,000 (superseded by I-2298). 

16.  Ellis, M.S., and Stricker, G.D., 1991, Coal rank trends from selected Paleocene basins, Rocky Mountain Region [abs.]: Geological Society of America, Rocky Mountain Section, Albuquerque, NM, April 1991, Abstract 22483, p. 19.  Reprinted 1992 in Colorado School of Mines, Quarterly Review of Methane from Coal Seams Technology, Volume 9, Number 2.

17.  Biewick, L.R.H., Ellis, M.S., Blake, Dorsey, Flores, R.M., Sykes, Richard, and Molnia, C.L., 1991, Interactive volume modeling of coal and associated depositional systems, Eocene Brunner Coal Measures, Buller Coal Field, New Zealand: U.S. Geological Survey Circular (Poster Session, McKelvey Forum, Houston, TX.)

18.  Roberts, S. B., Ellis, M.S., Flores, R.M., Nichols, D.J., Perry, W.J., Jr., and Stricker, G.D., 1992, Paleocene paleogeography, tectonics, and coal distribution in the Rocky Mountains region; an overview [abs.], in Carter, L. M. H., ed., U.S. Geological Survey research on energy resources, 1992, Program and abstracts, Eighth V.E. McKelvey Forum on Mineral and Energy Resources: U.S. Geological Circular 1074, p. 67-68.

19.  Biewick, L.R.H. and Ellis, M.S., 1992, Three-dimensional modeling and on-screen slide show of the Eocene Brunner Coal Measures, Buller Coal Field, New Zealand [abs.]: Geotech '92 Proceedings, extended abstract with poster session p. 17-24.

20.  Ellis, M.S., Stricker, G.D., and Flores, R.M., 1992, Laramide Deformation Front--Effects on coal quality in Paleocene coal basins, northern Rocky Mountain Region [abs.]:  American Association of Petroleum Geologists Rocky Mountain Regional Meeting, poster session, Casper, Wyoming, September 13-16, 1992. 

21.  Heffern, E.L., Coates, D.A., Whiteman, J., and Ellis, M.S., 1993, Geologic map showing distribution of clinker in Tertiary Fort Union and Wasatch Formations, northern Powder River basin, Montana:  U.S. Geological Survey Coal Investigations Map C-142, scale 1:250,000.

22.  Ellis, M.S., Biewick, L.R.H., Flores, Romeo, Blake, Dorsey, and Molnia, C.L., 1993, Interactive volume modeling of coal and related detrital rocks in the Eocene Brunner Coal Measures, Buller Coal Field, New Zealand: Dynamic Graphics Gallery Display, p. 71-72.

23.  Ellis, M. S., and Stricker, Gary D., Flores, R.M., Roberts, S.B., Stanton, R.W., Pierce, B.S., and Perry, W.J., Jr., 1993, The effects of tectonic activity on the quality and rank of Paleocene coals from Tertiary basins, Rocky Mountain Region, 10th Annual International Pittsburgh Coal Conference Proceedings, Coal Energy and the Environment, Shiao-Hung Chiang, ed., September 20-24, 1993, p. 1026, abstract with poster session.

24.  Biewick, Laura H., and Ellis, M.S., 1993, Computer modeling of the coal and related lithologies in the Brunner coal bed, Buller Coal field, South Island, New Zealand [abs.]: computer and poster display and abstract at the Pittsburgh Coal Conference, September 20-24, 1994, Pittsburgh, Pennsylvania.

25.  Ellis, M.S., 1993, U.S. Geological Survey Branch of Coal Geology bibliography, containing all references by present and former and present Branch personnel: Demonstration and draft copy presented at Tenth Annual International Pittsburgh Coal Conference, September 20-24, 1993.

26.  Bragg, L.J., Oman, J.K., Tewalt, S.J., Oman, C.L., Rega, N.H., Washington, P.M., and Finkleman, 1993, The U.S. Geological Survey Coal Quality Database, ver. 1.2, Test demonstration of CD-ROM at the Tenth Annual International Pittsburgh Coal Conference, September 1993.  (Not given coauthorship but checked, updated and revised all geologic and geographic data in the database for Wyoming.) 

27.  Ellis, M.S., Richards, D., Strahle, W., Degnan, C., Smith, G., and Chezar, H., 1993 and 1994,  Revision of Career Record (CR) forms (revised from PTR forms) used by all Operational Personnel in the Office of Energy and Marine Geology.

28.  Ellis, M.S., and Colton, R.B., 1994, Geologic map of the Powder River Basin and surrounding area, Wyoming, Montana, North Dakota, South Dakota, and Nebraska, U.S. Geological Survey Miscellaneous Investigations Map I-2298, scale 1:500,000 (supersedes MF-2095)

29.  Ellis, M.S., Stricker, G.D., and Flores, R.M., 1994, Distribution of hazardous air pollutant trace elements, total sulfur, and ash in coals from five Tertiary basins in the Rocky Mountain Region, in Chiang, Shiao-Hung, ed., Coal-Energy and the Environment: Eleventh Annual International Pittsburgh Coal Conference Proceedings, v. 2, p. 1106-1110.

30.  Ellis, M.S., and Gilbert, Connie, 1994, Bibliography for the Branch of Coal Geology, Office of Energy and Marine Geology, U.S. Geological Survey, January 1, 1985 - September 30, 1994:  Demonstration and draft copy of the Branch bibliography and database at the Eleventh Annual International Pittsburgh Coal Conference, September, 1994.

31.  Stricker, G.D., and Ellis, M.S., 1994, Laramide tectonism and paleogeography: Their effects on quality and hazardous air pollutant trace element trends in Rocky Mountain Province Paleocene coals: Eleventh Annual Meeting of the Society for Organic Petrology Abstracts, p. 101-104.

32.  Ellis, M.S., 1995, Bibliography of publications by members of the Branch of Coal Geology, Office of Energy and Marine Geology, U.S. Geological Survey, January 1, 1985- September 30, 1994:  U.S. Geological Survey Open-file Report 95-65-A, 194 p.

33.  Ellis, M.S., 1995, Bibliography of publications by members of the Branch of Coal Geology, Office of Energy and Marine Geology, U.S. Geological Survey, January 1, 1985- September 30, 1994:  U.S. Geological Survey Open-file Report 95-65-B, database software, data files and documentation on two 3 1/2 inch disks.

34.  Hettinger, R.D., Biewick, L.R.H., Bryant, Karen, Ellis, M.S., Ferderer, D.A., Kirschbaum, M.A., Molnia, C.L., Roberts, L.N.R., Roberts, S.B., Stricker, G.D., and Watson, W.D., 1995, Coal resource assessment in the Western United States--Factors for consideration in the management of Federal Lands, in Carter, L.M.H., ed., Energy and the Environment--Application of Geosciences to Decision-making-- Program and short papers, Tenth V.E. McKelvey Forum on Mineral and Energy Resources:  U.S. Geological Survey Circular 1108, p. 50-51.

35.  Colton, R.B., Klockenbrink, J.L., Ellis, M.S., and Heffern, E.L., 1995, Photogeologic and reconnaissance geologic map of the Schultz Coulee quadrangle, Rosebud County, Montana: U.S. Geological Survey Miscellaneous Field Studies Map, MF-2281, scale 1:24,000.

36.  Colton, R.B., Ellis, M.S., Klockenbrink, J.L., Grout, M.A., Heffern, E.L., Bierbach, P.R., and Kiefer, M.C., 1996, Photogeologic and reconnaissance geologic map of the Griffin Coulee NE and NW quadrangles, Rosebud County, Montana: U.S. Geological Survey Miscellaneous Field Studies Map MF-2289, scale 1:24,000.

37.  Colton, R.B., Ellis, M.S., Klockenbrink, J.L., Grout, M.A., and Heffern, E.L., 1996, Photogeologic and reconnaissance geologic map of the Rosebud and Thurlow quadrangles, Rosebud County, Montana: U.S. Geological Survey Miscellaneous Field Studies Map MF-2290, scale 1:24,000.

38.  Colton, R.B., Klockenbrink, J.L., Durst, S.L., Ellis, M.S., and Heffern, E.L., 1996, Photogeologic and reconnaissance geologic map of the Hathaway NW and Butterfly Creek quadrangles, Custer and Rosebud Counties, Montana:  U.S. Geological Survey Miscellaneous Field Studies Map MF-2293, scale 1:24,000.

39.  Colton, R.B., Klockenbrink, J.L., Durst, S.L., Ellis, M.S., and Heffern, E.L., 1996, Photogeologic and reconnaissance geologic map of the Smith Creek and Smith Creek NE quadrangles, Custer and Rosebud Counties, Montana:  U.S. Geological Survey Miscellaneous Field Studies Map MF-2301, scale 1:24,000.

40.  Colton, R.B., Klockenbrink, J.L., Durst, S.L., Ellis, M.S., and Heffern, E.L., 1996, Photogeologic and reconnaissance geologic map of the Griffin Coulee and Griffin Coulee SW quadrangles, Custer and Rosebud Counties, Montana:  U.S. Geological Survey Miscellaneous Field Studies Map MF-2302, scale 1:24,000.

41.  Colton, R.B., Klockenbrink, J.L., Durst, S.L., Ellis, M.S., and Heffern, E.L., 1996, Photogeologic and reconnaissance geologic map of the Mitchell Coulee and Crain Place quadrangles, Custer and Rosebud Counties, Montana:  U.S. Geological Survey Miscellaneous Field Studies Map MF-2303, scale 1:24,000.

42.  Colton, R.B., Klockenbrink, J.L., Durst, S.L., Ellis, M.S., and Heffern, E.L., 1996, Photogeologic and reconnaissance geologic map of the Sheep Creek Camp and McKerlich Creek quadrangles, Custer and Rosebud Counties, Montana:  U.S. Geological Survey Miscellaneous Field Studies Map MF-2304, scale 1:24,000.

43.  Colton, R.B., Klockenbrink, J.L., Durst, S.L., Ellis, M.S., and Heffern, E.L., 1996, Photogeologic and reconnaissance geologic map of the Rosebud Buttes and Indian Creek quadrangles, Custer and Rosebud Counties, Montana:  U.S. Geological Survey Miscellaneous Field Studies Map MF-2305, scale 1:24,000.

44.  Colton, R.B., Klockenbrink, J.L., Durst, S.L., Ellis, M.S., and Heffern, E.L., 1996, Photogeologic and reconnaissance geologic map of the Box Canyon Coulee and San Buttes quadrangles, Rosebud County, Montana:  U.S. Geological Survey Miscellaneous Field Studies Map MF-2315, scale 1:24,000.

45.  Flores, R.M., Nichols, D.J., Perry, W.J., Jr., Ellis, M.S., Roberts, S.B., and Stricker, G.D., 1996, Rocky Mountain Paleocene Coal Basins:  U.S. Geological Survey Energy Team Fact Sheet (poster that was not given a number).

46.  Flores, R.M., Bader, L.R., Ellis, M.S., Johnson, R.C., Keighin, C.W., Nichols, D.J., Roberts, S.B., Stricker, G.D., Warwick, P.D., Murphy, Edward, Cavaroc, V.V., Jr., Vogler, P.D., and Wilde, Edith, 1996, National Coal Resource Assessment:  Fort Union coals of the Northern Rocky Mountains and Northern Great Plains:  Coal, Energy, and the Environment: Thirteenth Annual International Pittsburgh Coal Conference Proceedings, September 1996, p. 191-196.

47.  Bader, L., Biewick, L., Ellis, M.S., Flores, R.M., Gognat, T.A., Johnson, R., Likarish, D., Nichols, D., Ochs, A.M., Roberts, S., Roberts, L., Stricker, G.D., Taber, T., Takahashi, K., Vogler, D., and Wilde, E., 1996, Preliminary CD-ROM, U.S. Geological Survey National Coal Assessment, Region 4: U.S. Geological Survey unpublished CD-ROM and Poster displayed and demonstrated at the Thirteenth Annual International Pittsburgh Coal Conference Proceedings, September 1996, the Geological Society of America Annual Meeting 1996, and through other venues.

48.  Ellis, M.S., Keighin, C.W., Gunther, G.L., Flores, R.M., Stricker, G.D., Roberts, S.B., Ochs, A.M., and Bader, L.R., 1997, Constraints on Coal Resource Estimation: A Depositional Perspective [abs.]: Geological Society of America Proceedings.

49.  Stricker, G. D., Ellis, M.S., and Flores, R.M., 1997, Quality and distribution of the Anderson-Wyodak Coal Zone, Powder River Basin, Montana and Wyoming-- A First Step in the National Coal Resource Assessment [abs.]: Society of Mining, Metallurgy, and Exploration, Inc., 126th Annual Meeting, Denver, CO, Feb. 25, 1997, Abstracts with Programs, p. 36.

50.  Schuenemeyer, J. H., Flores, R.M., Stricker, G.D., Ellis, M.S., Gunther, G.L., Taber, T.Y., and Ochs, A.M., 1997, A method to estimate the uncertainty of coal resources [abs.]: Geological Society of America Annual Meeting Abstracts with Programs, Salt Lake City, Utah, Oct. 20, 1997, v. 29, no. 6, p. 204.

51.  Ellis, M.S., Stricker, G.D., Flores, R.M., and Bader, L.R., 1998, Sulfur and ash in Paleocene Wyodak-Anderson coal in the Powder River Basin, Wyoming and Montana:  A fuel source beyond 2000 [abs.]: Proceedings of the International Technical Conference on Coal Utilization, Clearwater, FL, March 9-13, 1998.

52.   Ellis, M.S., Stricker, G.D., Gunther, G., Ochs, A.M., and Flores, R.M., 1998, The relationship between coal quality and coal resource parameters of Powder River and Williston Basin coal, Wyoming, Montana, and North Dakota:  [abs.], in Chiang, S.H., ed., Coal-Energy and the Environment: Fifteenth Annual International Pittsburgh Coal Conference, Pittsburgh, PA, September 14-18, 1998, CD-ROM.

53.  Stricker, G. D., Ellis, M.S., Flores, R.M., and Bader, L.R., 1998, Elements of Environmental Concern in the 1990 Clean Air Act Amendments--A perspective from Fort Union coals in northern Rocky Mountain and Great Plains Region: Proceedings of the International Technical Conference on Coal Utilization, Clearwater, FL, March 9-13, 1998, p. 849-858.

54.  Stricker, G. D., Ellis, M.S., Flores, R.M., and Bader, L.R., 1998, Coal in the Northern Rocky Mountain and Great Plains region; clean, compliant, and available [abs.], in Chiang, S.H., ed., Coal-Energy and the Environment: Fifteenth Annual International Pittsburgh Coal Conference, Pittsburgh, PA, September 14-18, 1998, 11 p., 2 tables, 3 figures, CDROM.

55.  Stricker, G. D., Ellis, M.S., Flores, R.M., and Bader, L.R., 1998, Air Toxics in Clear Air Act Amendments--A perspective from Fort Union coals in northern Rocky Mountain and Great Plains Region: 23rd International Technical Conference on Coal Utilization and Fuel Systems, March 10-12, 1998, Clearwater, Florida, 2 p.

56.  Flores, R. M., Bader, L.R., Cavaroc, V.V., Ellis, M.S., Gunther, G., Johnson, R., Keighin, C.W., Likarish, D., Nichols, D.J., Ochs, A., Roberts, S.B., Stricker, G.D., Takahashi, K.I., Taber, T., Warwick, P.D., Govern, G., Murphy, E.C., and Wilde, E., 1998, Characteristics of strippable Fort Union coals in the northern rocky mountains and great plains region, in Sakkestad, B. A., ed., A digital (CD-ROM) presentation: Proceedings of the 23rd International Technical Conference on Coal Utilization and Fuel Systems, Clearwater, Florida, p. 839-848.

57.  Flores, R. M., Gunther, G., Ochs, A., Ellis, M.S., Stricker, G.D., and Bader, L.R., 1998, Wyodak-Anderson Coal Assessment, Powder River Basin, Wyoming and Montana: An ArcView project: 15th Annual International Pittsburgh Conference Proceedings, September 14-18, 1998, 1 p.

58.  Ellis, M.S., Gunther, G.L., Flores, R.M., Ochs, A.M., Stricker, G.D., Roberts, S.B., Taber, T.T., Bader, L.R., and Schuenemeyer, J.H, 1999, Preliminary report on coal resources of the Wyodak-Anderson coal zone, Powder River Basin, Wyoming and Montana:  U.S. Geological Survey Open-File Report 98-789-a

59.  Ellis, M.S., Gunther, G.L., Flores, R.M., Stricker, G.D., Ochs, A.M., and Schuenemeyer, J.H, 1999, Preliminary report on methodology for calculating coal resources of the Wyodak-Anderson coal zone, Powder River Basin, Wyoming and Montana:  U.S. Geological Survey Open-File Report 98-789-b.

60.  Fort Union Coal Assessment Team, 1999, National Coal Resource Assessment—1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains Region:  U.S. Geological Survey Professional Paper 1625-A, CD-ROM disks 1 and 2.

61.  Ellis, M.S., Gunther, G.L., Flores, R.M., Ochs, A.M., Stricker, G.D., Roberts, S.B., Taber, T.T., Taber, Bader, L.R., and Schuenemeyer, J.H, 1999, Coal Resources, Powder River Basin, chapter PN in National Coal Resource Assessment—1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains Region:  U.S. Geological Survey Professional Paper 1625-A, CD-ROM disk 1.

62.  Ellis, M.S., Gunther, G.L., Flores, R.M., Ochs, A.M., Stricker, G.D., Roberts, S.B., Taber, T.T., Taber, Bader, L.R., and Schuenemeyer, J.H, 1999, Coal Resources, Williston Basin, chapter WN in National Coal Resource Assessment—1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains Region:  U.S. Geological Survey Professional Paper 1625-A, CD-ROM disk 1.

63.  Ellis, M.S., Gunther, G.L., Flores, R.M., Ochs, A.M., Stricker, G.D., Roberts, S.B., Taber, T.T., Bader, L.R., and Schuenemeyer, J.H, 1999, Coal Resources, Greater Green River Basin, chapter GN in National Coal Resource Assessment—1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains Region:  U.S. Geological Survey Professional Paper 1625-A, CD-ROM disk 1.

64.  Ellis, M.S., Gunther, G.L., Flores, R.M., Ochs, A.M., Stricker, G.D., Roberts, S.B., Taber, T.T., Bader, L.R., and Schuenemeyer, J.H, 1999, Coal Resources, Hanna and Carbon Basins, chapter HN in National Coal Resource Assessment—1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains Region:  U.S. Geological Survey Professional Paper 1625-A, CD-ROM disk 1.

65.  Ellis, M.S., Flores, R.M., Ochs, A.M., Stricker, G.D., Gunther, Rossi, G.S., Bader, L.R., Scheunemeyer, J.H., and Power, H.C. 1999, Sheridan Coalfield, Powder River Basin: Geology, coal quality, and coal resources, chapter PH  in National Coal Resource Assessment—1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains Region:  U.S. Geological Survey Professional Paper 1625-A, CD-ROM disk 1.

66.  Ellis, M.S., Flores, R.M., Ochs, A.M., Stricker, G.D., Gunther, Rossi, G.S., Bader, L.R., Scheunemeyer, J.H., and Power, H.C. 1999, Gillette Coalfield, Powder River Basin: Geology, coal quality, and coal resources, chapter PG  in National Coal Resource Assessment—1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains Region:  U.S. Geological Survey Professional Paper 1625-A, CD-ROM disk 1.

67.   

68.  Stricker, G. D., and Ellis, M.S., 1999, Coal quality and geochemistry, Powder River Basin, Wyoming and Montana, chapter PQ, in Fort Union Coal Assessment Team, authors, National Coal Resource Assessment--1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains Region: U.S. Geological Survey Professional Paper 1625-A, CD-ROM disk 1.

69.  Stricker, G. D., and Ellis, M.S., 1999, Coal quality and geochemistry, Hanna Basin, Wyoming, chapter HQ, in Fort Union Coal Assessment Team, authors, National Coal Resource Assessment--1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains Region: U.S. Geological Survey Professional Paper 1625-A, CD-ROM disk 1.

70.  Stricker, G. D., and Ellis, M.S., 1999, Coal quality and geochemistry, Williston Basin, North Dakota, chapter WQ, in Fort Union Coal Assessment Team, authors, National Coal Resource Assessment--1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains Region: U.S. Geological Survey Professional Paper 1625-A, CD-ROM disk 1.

71.  Stricker, G. D., and Ellis, M.S., 1999, Coal quality and geochemistry, Greater Green River Basin, Wyoming, chapter GQ, in Fort Union Coal Assessment Team, authors, National Coal Resource Assessment--1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains Region: U.S. Geological Survey Professional Paper 1625-A, CD-ROM disk 1.

72.  Roberts, S. B., Wilde, E.M., Rossi, G.S., Blake, Dorsey, Ellis, M.S., Stricker, G.D., Ochs, A.M., Gunther, G.L., Schuenemeyer, J.H., and Power, H.C., 1999, Ashland coalfield, Powder River Basin, Montana: Geology, coal quality, and coal resources, chapter PA, in National Coal Resource Assessment--1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains Region: U.S. Geological Survey Professional Paper 1625-A, CD-ROM disk 1.

73.  Roberts, S. B., Wilde, E.M., Rossi, G.S., Blake, Dorsey, Ellis, M.S., Stricker, G.D., Ochs, A.M., Gunther, G.L., Schuenemeyer, J.H., and Power, H.C., 1999, Colstrip coalfield, Powder River Basin, Montana: Geology, coal quality, and coal resources, chapter PC, in National Coal Resource Assessment--1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains Region: U.S. Geological Survey Professional Paper 1625-A, CD-ROM disk 1.

74.  Roberts, S. B., Gunther, G., Taber, T., Ochs, A., Blake, D., Ellis, M.S., Stricker, G.D., Wilde, E.M. Schuenemeyer, J.H., and Power, H.C, 1999, Decker coalfield, Powder River Basin, Montana: Geology, coal quality, and coal resources, chapter PD, in National Coal Resource Assessment--1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains Region: U.S. Geological Survey Professional Paper 1625-A, CD-ROM disk 1.

75.  Flores, R. M., Ochs, A.M., Stricker, G.D., Roberts, S.B., Ellis, M.S., Keighin, C.W., Murphy, E.C., Cavaroc, V.V., Jr., Johnson, R.C., and Wilde, E.M., 1999, National Coal Resource Assessment Non-Proprietary Data: Location, Stratigraphy, and Coal Quality for Selected Tertiary Coal in the Northern Rocky Mountains and Great Plains Region: U.S. Geological Survey Open-File Report 99-376, CD-ROM.

76.  Ellis, M.S., 1999, U.S. Geological Survey 1999 assessment of Wyodak-Anderson coal resources in the Powder River Basin, Wyoming and Montana:  Wyoming Geological Association Guidebook for Fiftieth Field Conference, p. 43-60.

77.  Ellis, M.S., Molnia, C.L., Biewick, L.H., Roberts, L.N.R., Flores, R.M., Roberts, S.B., Stricker, G.D., and Ochs, A.M., 2000, Federally Owned Coal and Federal Lands in the Northern Rocky Mountains and Great Plains Region: U.S. Geological Survey Fact Sheet 011-00, 6 p.

78.  Rice, C. A., Ellis, M.S., and Bullock, J.H., Jr., 2000, Water co-produced with coalbed methane in the Powder River Basin, Wyoming; preliminary compositional data: U.S. Geological Survey Open-File Report 00-372, 20 p.

79.  Ellis, M.S., Rohrbacher, T.J., Carter, M.D., Molnia, C.L., Osmonson, L.M., and Scott, D.C., 2001, Economic and Environmental Evaluations of Extractable Coal Resources Conducted by the U.S. Geological Survey: U.S. Geological Survey Fact Sheet 109-01, 2p.

80.  Stricker, G.D., Flores, R.M., Stanton, R.W., Rice, C.A., Ellis, M.S., Ochs, A., McGarry, D.E., Crockett, F.J., and Stilwell, D., 2001, Challenges confronting coalbed methane development in the Powder River Basin, Wyoming and Montana [abs.], American Association of Petroleum Geologists 2001 Annual Meeting, Denver, CO, June 3-6, 2001, 1 p.

81.  Ellis, M. S., Roberts, L.N.R., and Molnia, C.L., 2001, Federally owned coal, federal lands, and coal quality in the Western United States [abs.]: Geological Society of America Abstracts with Program, 2001 Annual Meeting, Boston, MA, Nov. 1-10, 2001.

82.  McIntosh, G. E., Rohrbacher, T.J., Osmonson, L.M., Molnia, C.L., Ellis, M.S., and Carter, M.D., 2001,  CoalVal 2001-Coal Resource Valuation: U.S. Geological Survey Open-File Report.

83.  Ellis, M. S., 2002, Quality of Economically Extractable Coal Beds in the Gillette Coal Field as Compared with Other Tertiary Coal Beds in the Powder River Basin, Wyoming and Montana: U.S. Geological Survey Open-File Report 02-174, 19 p.

84.  Ellis, M.S., Molnia, C. L., Osmonson, L.M., Ochs, A.M., Ellis, M.S., Rohrbacher, T.J., and Mercier, T.J., 2002, Evaluation of Coal Resources in the Gillette Coal Field, Wyoming [abs.]: American Association of Petroleum Geologists, Pacific Section and SPE Convention, Phoenix, Arizona, Feb. 22, 2002.

85.  Ellis, M. S., and Nichols, D. J., 2002, A Summary of the U.S. Geological Survey 1999 Resource Assessment of Selected Coal Zones in the Northern Rocky Mountains and Great Plains region, Wyoming, Montana, and North Dakota: U.S. Geological Survey Bulletin 2189, 10 p.

86.  Rice, C.A., Bartos, T.T., and Ellis, M.S., 2002, Chemical and isotopic composition of water in the Fort Union and Wasatch Formations of the Powder River Basin, Wyoming and Montana:  implications for coalbed methane development. Coalbed Methane of North America II., S.D. Schwochow, and V.F. Nuccio, eds.

87.  Rice, C. A., Ellis, M.S., Bartos, T.T., and Flores, R.M., 2002, Chemical and isotopic composition of water co-produced with coalbed methane in the Fort Union and Wasatch Formations of the Powder River Basin, Wyoming and Montana [abs.]: Geological Society of America Abstract with Program, 2002 Annual Meeting, Denver, CO, October 27-30, 2002.

88.  Ellis, M. S., Molnia, C.L., Osmonson, L.M., Ochs, A.M., Rohrbacher, T.J., Mercier, T.J., and Roberts, L.N.R., 2002, Evaluation of Economically Extractable Coal Resources in the Gillette Coal Field, Powder River Basin, Wyoming: U.S. Geological Open-File Report 2002-180, 48 p.

89.  Nichols, D.J., and Ellis, M.S., 2003, U.S. Geological Survey resource assessment of selected Tertiary coal zones in Wyoming, Montana, and North Dakota: Mining Engineering, a publication of SME, Technical Papers, p. 33-38.

90.  Flores, R. M., Stricker, G.D., Ellis, M.S., and Trippi, M., 2003, Results of the assessment of coalbed methane in Fort Union coals in the Northern Cheyenne Indian Reservation, Montana:  U.S. Geological Survey Administrative Report.

91.  Ellis, M. S., Flores, R.M., and Stricker, G.D, 2004, USGS-BLM coalbed methane cooperative study in the Powder River Basin, Wyoming: Handout for 2004 Regional Bureau of Land Management Meeting, Cheyenne, Wyoming, 2 p.

92.  Flores, R. M., Stricker, G.D., Ellis, M.S., and Rice, C.A, 2004, Coalbed Methane Natural Gas Potential and Hydrologic Analysis in the Moreno Hill Formation in the Salt Lake Coal Field-Zuni Salt Lake Area: U.S. Geological Survey Administrative Report.

93.  Osmonson, L.M., Molnia, C.L., Ellis, M.S., Rohrbacher, T.J., Freeman, P.A., and Scott, D.C., 2005,The Evaluation of Extractable Coal Resources in the Gillette Coalfield, Powder River Basin, Wyoming [abs.]: Society for Mining, Metallurgy, and Exploration Annual Meeting, 1 p.

94.  Flores, R. M., Stricker, G.D., Ellis, M.S., and Rice, C.A., 2005, Coalbed Methane Potential and Hydrologic Analysis in the Moreno Hill Formation in the Salt Lake Coalfield-Zuni Salt Lake Area: U.S. Geological Survey Administrative Report.

95.  Ellis, M. S., Stricker, G.D., and Flores, R.M., 2005, Gas Desorption Tests:  Application for Powder River Basin Gas Production Prediction [abs.]: American Association of Petroleum Geologists/Rocky Mountain Section Meeting, Jackson Hole, WY, September 24-26, 2005.

96.  Stricker, G.D., Flores, R.M., McGarry, D.E., Stillwell, D.P., Hoppe, D.J., Stillwell, C.R., Ochs, A.M., Ellis, M.S., Osvald, K.S., Taylor, S.L., Thorvaldson, M.C., Trippi, M.H., Grose, S.D., Crockett, F.J., and Shariff, A.J., 2006, Gas desorption isotherm studies of coals in the Powder River Basin, Wyoming and adjacent basins in Wyoming and North Dakota: U.S. Geological Survey Open-File Report 2006-1174, 21 p.

97.  Flores, R. M., Stricker, G.D., Ellis, M.S., Tripp, M.H. and Cannon, M., 2006, Coalbed Methane Accumulation in Deeper Fort Union Coal and Sandstone Beds in the Birney Day Village area, Northern Cheyenne Indian Reservation, U.S. Geological Survey Administrative Report.

98.  Ellis, M. S., Flores, R.M., Stricker, G.D., and Rice, C.A., 2006, U.S. Geological Survey and Bureau of Land Management Cooperative Coalbed Methane Project in the Powder River Basin, Wyoming, U.S. Geological Survey Fact Sheet 2006-3132, 6 p.

99.  Rice, C.A., Flores, R.M., Stricker, G.D., and Ellis, M.S., 2007, Chemical and stable isotopic composition of water and gas in the Fort Union Formation of the Powder River Basin, Wyoming and Montana: Evidence for water/rock interaction and the biogenic origin of coalbed natural gas[abs.]: Geological Society of America Abstracts with Programs, Denver, Colorado, Oct. 2007, 2 p.

100.    Stricker, G.D.; Flores, R.M.; Trippi, M.H.; Ellis, M.S.; Olson, C.M.; Sullivan, J.E.; Takahashi, K.I., 2007, Coal Quality and Major, Minor, and Trace Elements in the Powder River, Green River, and Williston Basins, Wyoming and North Dakota : U.S. Geological Survey Open File Report  2007-1116, 210 p.

101.    Ellis, M.S. and Affolter, R., eds., 2007, Fly Ash: From Cradle to Grave:  U.S. Geological Survey Open-File Report 2007-1160, 81 p.

102.    Flores, R.M., Stricker, G.D., Rice, C.A., Warden, Augusta, and Ellis, M.S., 2007, Methanogenic pathways in the Powder River Basin: The geologic factor [abs.]: Geological Society of America Abstracts with Programs, Denver, Colorado, Oct. 2007, 2 p.

103.    Flores, R.M., Stricker, G.D., Brownfield, M., Ellis, M.S., and Heffern, E., 2008, Cornucopia of coal and CBM in the Powder River Basin: Geological Society of America Field Guide for 2007 GSA Meeting, 15 p.

104.    Osmonson, L M., Scott, D.C., Haacke, J,E., Luppens, J.A., Rohrbacher, T.J., and Ellis, M.S. , 2008, Results of the Evaluation of Significant Coal Resources and Reserves in the Gillette Coalfield, Powder River Basin, Wyoming [abs.]: Society for Mining, Metallurgy, and Exploration (SME meeting Salt Lake City, Utah, Feb. 24-27, 2008).

105.    Stricker, G.D., Flores, R.M., Ellis, M.S., and Klein, D.A., 2008, Post combustion CO₂ capture: Let the microbes ruminate! [abs.]: The 33^rd International Technical Conference on Coal Utilization & Fuel Systems, Clearwater Coal Conference, Clearwater, Florida, June 1-5, 2008, 1 p.

106.    Rice, C.A., Flores, R.M., Stricker, G.D., and Ellis, M.S., 2008, Chemical and stable isotopic composition of water and gas in the Fort Union Formation of the Powder River Basin, Wyoming and Montana: Evidence for water/rock interaction and the biogenic origin of coalbed natural:  International Journal of Coal Geology, 31 p.

107.    Flores, R.M., Rice, C.A., Stricker, G.D., Warden, Augusta, and Ellis, M.S., 2008, Methanogenic pathways of coalbed gas in the Powder River Basin, United States: The geologic factor: International Journal of Coal Geology, 30 p.

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