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Between A.D. 1181 and 1200, in the early part of a climatically wet period, corn was imported to Chaco Canyon from a region outside the Chaco Halo (defined in this paper as the region between the base of the Chuska Mountains and Raton Wells). Strontium-isotope (87Sr/86Sr) analyses of 12 corn cobs dating to this period match 87Sr/86Sr ratios from five potential source areas, including: the Zuni region, the Mesa Verde-McElmo Dome area, the Totah, the Defiance Plateau, and Lobo Mesa. The latter two areas were eliminated from consideration as possible sources of corn in that they appear to have been unpopulated during the time period of interest. Therefore, it appears that the corn cobs were imported from the Zuni region,...
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The USGS Central Region Energy Team assesses oil and gas resources of the United States. The onshore and State water areas of the United States comprise 71 provinces. Within these provinces, Total Petroleum Systems are defined and Assessment Units are defined and assessed. Each of these provinces is defined geologically, and most province boundaries are defined by major geologic changes. The San Juan Basin Province is located in South Western Colorado and North Western New Mexico, encompassing all or parts of Montezuma, La Plata, and Archuletta Counties in Colorado and all or parts of San Juan, Rio Arriba, Sandoval, Mckinley, Bernalillo, and Cibola Counties in New Mexico. The main population centers within the study...
Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 22 = San Juan Basin, 502201 = Fruitland, 50220101 = Tertiary Conventional Gas, 50220161 = Pictured Cliffs Continuous Gas, 50220181 = Fruitland Fairway Coalbed Gas, All tags...
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The Total Petroleum System is used in the National Assessment Project and incorporates the Assessment Unit, which is the fundamental geologic unit used for the assessment of undiscovered oil and gas resources. The Total Petroleum System is shown here as a geographic boundary defined and mapped by the geologist responsible for the province and incorporates not only the set of known or postulated oil and (or) gas accumulations, but also the geologic interpretation of the essential elements and processes within the petroleum system that relate to source, generation, migration, accumulation, and trapping of the discovered and undiscovered petroleum resource(s).
Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 22 = San Juan Basin, 502201 = Fruitland, 50220101 = Tertiary Conventional Gas, 50220161 = Pictured Cliffs Continuous Gas, 50220181 = Fruitland Fairway Coalbed Gas, All tags...
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The USGS Central Region Energy Team assesses oil and gas resources of the United States. The onshore and State water areas of the United States comprise 71 provinces. Within these provinces, hydrocarbon plays were defined and assessed. Each of these provinces is defined geologically, and most province boundaries are defined by major geologic changes. The province boundaries were drawn on the county lines that most closely followed the natural geologic boundaries.
Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Adirondack Uplift, Albuquerque - Santa Fe Rift, Anadarko Basin, Appalachian Basin, Arkoma Basin, All tags...
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This is a point coverage containing 12 years (1984 through 1995) of coal mining history in the Colorado Plateau coal assessment study area. This layer was derived from the Mine Safety and Health Administration's (MSHA) Information Resource Center data for the years 1984 through 1995.
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The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum System. The Assessment Unit is shown here as a geographic boundary interpreted, defined, and mapped by the geologist responsible for the province and incorporates a set of known or postulated oil and (or) gas accumulations sharing similar geologic, geographic, and temporal properties within the Total Petroleum System, such as source rock, timing, migration pathways, trapping mechanism, and hydrocarbon type. The Assessment Unit boundary is defined geologically as the limits of the geologic...
Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 22 = San Juan Basin, 502201 = Fruitland, 50220101 = Tertiary Conventional Gas, 50220161 = Pictured Cliffs Continuous Gas, 50220181 = Fruitland Fairway Coalbed Gas, All tags...
Citation: U.S. Geological Survey San Juan Basin Assessment Team, 2013, Total petroleum systems and geologic assessment of undiscovered oil and gas resources in the San Juan Basin Province, exclusive of Paleozoic rocks, New Mexico and Colorado: U.S. Geological Survey Digital Data Series 69–F, variously paged.
Categories: Publication; Tags: Oil and Gas, San Juan Basin
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The Pagosa Springs geologic map is of the 7.5-minute quadrangle of the same name. It is located in southwestern Colorado, USA and shows the town of Pagosa Springs. The mapped area is southwest of the San Juan volcanic mountains (Oligocene) and north of the San Juan Basin. All bedrock units exposed in the map area are Upper Cretaceous in age except a minor canyon outcrop of Upper Jurassic rock. Pre-Holocene Quaternary age deposits are mainly alluvial gravels and outwash on terraces. Structure is simple: shale and sandstone beds dip at low angles east to northeast as a broad limb of the north-northwest striking Archuleta Anticline. Three geologic cross sections controlled by drill holes are included and depict Mesozoic...
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The USGS Central Region Energy Team assesses oil and gas resources of the United States. The onshore and State water areas of the United States comprise 71 provinces. Within these provinces, hydrocarbon plays were defined and assessed. Each of these provinces is defined geologically, and most province boundaries are defined by major geologic changes. The province boundaries were drawn on the county lines that most closely followed the natural geologic boundaries.
Categories: Web Site; Tags: Adirondack Uplift, Alaska, Albuquerque - Santa Fe Rift, Anadarko Basin, Appalachian Basin, All tags...
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Cell maps for each oil and gas assessment unit were created by the USGS as a method for illustrating the degree of exploration, type of production, and distribution of production in an assessment unit or province. A cell map was not created for the Menefee Coal-Bed Gas (50220381) assessment unit because it was considered a hypothetical assessment unit. The Mesaverde Updip oil had production wells associated with it but resource totals were below the minimum and wasn't quantitatively assessed. Each cell represents a quarter-mile square of the land surface, and the cells are coded to represent whether the wells included within the cell are predominantly oil-producing, gas-producing, both oil and gas-producing, dry,...
Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 22 = San Juan Basin, 502201 = Fruitland, 50220101 = Tertiary Conventional Gas, 50220161 = Pictured Cliffs Continuous Gas, 50220181 = Fruitland Fairway Coalbed Gas, All tags...
These geospatial data and their accompanying report outline many areas of coal in the United States beneath more than 3,000 ft of overburden. Based on depth, these areas may be targets for injection and storage of supercritical carbon dioxide. Additional areas where coal exists beneath more than 1,000 ft of overburden are also outlined; these may be targets for geologic storage of carbon dioxide in conjunction with enhanced coalbed methane production. These areas of deep coal were compiled as polygons into a shapefile for use in a geographic information system (GIS). The coal-bearing formation names, coal basin or field names, geographic provinces, coal ranks, coal geologic ages, and estimated individual coalbed...
The USGS Central Region Energy Team assesses oil and gas resources of the United States. The onshore and State water areas of the United States comprise 71 provinces. Within these provinces, Total Petroleum Systems are defined and Assessment Units are defined and assessed. Each of province is defined geologically, and most province boundaries are defined by major geologic changes. This dataset is a compilation of data that has been studied and published separately, and in some cases adjacent provinces do not share a common boundary. As a consequence, there are numerous gaps and overlaps in this layer.
Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Adirondack Uplift, Albuquerque - Santa Fe Rift, Anadarko Basin, Appalachian Basin, Arkoma Basin, All tags...


    map background search result map search result map 1995 National Oil and Gas Assessment Province Boundaries Data Release for the Geologic Map of the Pagosa Springs 7.5' Quadrangle, Archuleta County, Colorado 1995 National Oil and Gas Assessment Province Boundaries Coal-mine production history from 1984 through 1995 in the Colorado Plateau coal assessment study area (cpmphg) National Assessment of Oil and Gas Project - San Juan Basin Province (022) Boundary San Juan Basin, CO and NM coal resources calculation area (sjbbndg) San Juan Basin Geology, New Mexico and Colorado (sjbgeolg) Isopachs of the interval between the top of the Huerfanito Bentonite Bed and the top of the Pictured Cliffs Sandstone, San Juan Basin (sjbhintg) National Assessment of Oil and Gas Project - San Juan Basin Province (022) Quarter-Mile Cells National Assessment of Oil and Gas Project - San Juan Basin Province (022) Assessment Units National Assessment of Oil and Gas Project - San Juan Basin Province (022) Total Petroleum Systems Data Release for the Geologic Map of the Pagosa Springs 7.5' Quadrangle, Archuleta County, Colorado San Juan Basin, CO and NM coal resources calculation area (sjbbndg) San Juan Basin Geology, New Mexico and Colorado (sjbgeolg) Isopachs of the interval between the top of the Huerfanito Bentonite Bed and the top of the Pictured Cliffs Sandstone, San Juan Basin (sjbhintg) National Assessment of Oil and Gas Project - San Juan Basin Province (022) Boundary National Assessment of Oil and Gas Project - San Juan Basin Province (022) Quarter-Mile Cells National Assessment of Oil and Gas Project - San Juan Basin Province (022) Assessment Units National Assessment of Oil and Gas Project - San Juan Basin Province (022) Total Petroleum Systems Coal-mine production history from 1984 through 1995 in the Colorado Plateau coal assessment study area (cpmphg) 1995 National Oil and Gas Assessment Province Boundaries 1995 National Oil and Gas Assessment Province Boundaries