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The engineering-geologic map is derived electronically, using Geographic Information System (GIS) software, from the surficial-geologic map of the second segment of the proposed natural gas pipeline corridor through the upper Tanana valley, a 12-mi-wide (19.3-km-wide) area that straddles the Alaska Highway through the upper Tanana River valley from the Robertson River eastward to near Tetlin Junction in the Tanacross Quadrangle (Reger and Hubbard, PIR 2009-6A). Surficial-geologic units were initially identified by interpretation of false-color ~1:65,000-scale infrared aerial photographs taken in July 1978, August 1980, and August 1981 and locally verified by field checking in 2007 and 2008. The map shows the distribution...
This surficial-geologic map shows the distribution of unconsolidated deposits and undifferentiated bedrock in the Faith Creek area in the Circle A-4, A-5, B-4, and B-5 quadrangles. This map was prepared principally by the interpretation of 1:63,360-scale, false-color, infrared aerial photographs taken in 1979 and 1981 and is locally verified by ground observations during field work in 2007.
This report provides detailed mapping (1:63,360-scale) in the Dalton Highway area, from Atigun Gorge to Slope Mountain, in the west-central Philip Smith Mountains quadrangle. The map area extends from the northern flank of the Endicott Mountains into the Arctic Foothills province.
Core Research Center, cutting DD18259, from well operated by TETON ENERGYRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "DD18259", "API Num": "0507708363", "Operator": "TETON ENERGY", "Well Name": "1-3 BULL BASIN-FEDERAL", "Field": null, "State": "CO", "County": "MESA", "Thin Sec": "F", "Analysis": "F", "Latitude": "39.119354", "Longitude": "-108.072082", "coordinates_geohash": "9wgnsc2qcbnu", "Source": "FROM STATE RECORDS", "Min": "420", "Max": "5250", "Security Flag": null, "crc_collection_name": "cutting", "sb_parent_id": "4f4e49d8e4b07f02db5df2d2", "intervals": [{"Formation": null, "Age": null, "Min Depth": null, "Max Depth": null}], "crcwc_url": "https://my.usgs.gov/crcwc/cutting/report/47316",...
The Alaska Division of Geological & Geophysical Surveys (DGGS) has conducted 1:63,360-scale geologic mapping of the Eagle A-1 Quadrangle.The area is part of the 100-year old Fortymile mining district and is located in eastern Alaska near the Alaska-Yukon border. This map illustrates the distribution of a variety of unconsolidated deposits and undifferentiated bedrock in the Eagle A-1 Quadrangle, Fortymile mining district. It was prepared by the interpretation of 1:63,360-scale, false-color, infrared aerial photographs taken from July 1978 through August 1981 and is locally verified by ground observations during field visits.The results should be considered reconnaissance in nature. The dominant unconsolidated deposit...
This report provides detailed (1:63,360-scale) surficial-geologic mapping in the Dalton Highway area, from the Sagavanirktok to the Itkillik Rivers, in the west-central Philip Smith Mountains quadrangle. The map area extends from the northern flank of the Endicott Mountains into the Arctic Foothills province.
This map illustrates potential near-surface sources of geologic materials that may be useful for construction and other purposes. Field observations indicate that each geologic unit (for example, flood-plain alluvium) has a definite composition or range of composition. Therefore, the presence of material type is interpreted from the distribution of geologic units (Newberry and others, 1996 - PDF96-16). Assignment of Unified Soil Classes (Wagner, 1957) is based on visual observation and interpretation of the likely distribution of the materials; no grain-size analyses were performed. Descriptions of unconsolidated deposits are modified from Pewe and Bel (1975a-d) and Pewe and Bell (1976). This map is generalized...
Core Research Center, cutting FC00524, from well operated by LION-POTEETRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "FC00524", "API Num": "0201505005", "Operator": "LION-POTEET", "Well Name": "1 GOVERNMENT", "Field": null, "State": "AZ", "County": "MOHAVE", "Thin Sec": "F", "Analysis": "F", "Latitude": "36.78287037", "Longitude": "-112.914158", "coordinates_geohash": "9qx9q847v2j2", "Source": "FROM STATE RECORDS", "Min": "0", "Max": "2300", "Security Flag": null, "crc_collection_name": "cutting", "sb_parent_id": "4f4e49d8e4b07f02db5df2d2", "intervals": [{"Formation": null, "Age": null, "Min Depth": null, "Max Depth": null}], "crcwc_url": "https://my.usgs.gov/crcwc/cutting/report/48210",...
This map is a compilation of previously unpublished and published data, as well as from updated field mapping. This publication offers a 1:125,000-scale map sheet accompanied by a booklet containing a summary of the geology, a colored terrane map, map unit descriptions, a summary table listing selected mineral deposits and energy resources, references, and a correlation of map units. The text (in the report) describes the geology and resource potential of a highly mineralized region centered in the Farewell silver-lead-zinc district southeast of McGrath. Potentially important coal resources flanking the Alaska Range are also described in the map area.
This report provides detailed (1:63,360-scale) mapping of portions of U.S. Geological Survey Circle B-2 (1955), B-3 (1955), B-4 (1952), C-2 (1955), C-3 (1955), and C-4 (1952) quadrangles. The area is part of the Circle mining district and adjacent to the Fairbanks mining district. This report includes detailed geologic, structural, stratigraphic, and geochronologic data. Based on the resulting geologic maps, field investigations, and laboratory materials analyses, the project has also generated derivative maps of geologic construction materials and geologic hazards.
The Alaska Division of Geological & Geophysical Surveys (DGGS), in partnership with the U.S. National Cooperative Geologic Mapping Program, mapped approximately 450 mi2 of the Talkeetna Mountains region of central Alaska at 1:50,000 scale over the course of six weeks in 2014. This area contains significant exposures of Late Triassic mafic volcanics and gabbro sills that have been the focus of region-wide exploration for the Strategic and Critical platinum-group elements (PGEs). The area also exposes numerous inactive and possibly active faults which project through the area of proposed hydropower development. The resulting geologic map offers an improved understanding of the geology, structural history, and mineral...
This preliminary geologic map of the Fairbanks mining district was mapped at 1:63,360 scale. The report describes the geologic setting, structural geology, earthquake potential, economic geology and the description of bedrock units.
This map shows the distribution of unconsolidated deposits and undifferentiated bedrock exposed at the surface in the Sagavanirktok A-3, A-4, B-3, B-4, and portions of the Sagavanirktok A-5 and B-5 quadrangles. Units were mapped by interpretation of stereo pairs of approximately 1:65,000-scale false-color infrared aerial photographs taken in June and August 1978, as well as 2.5 m and 10 m resolution SPOT imagery collected in 2009 and 2010. Fieldwork was completed in 2008.
Core Research Center, cutting BZ02480, from well operated by BARKERRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "BZ02480", "API Num": "2509505010", "Operator": "BARKER", "Well Name": "2 TYLER-ORR", "Field": "DEAN DOME", "State": "MT", "County": "STILLWATER", "Thin Sec": "F", "Analysis": "F", "Latitude": "45.3932145", "Longitude": "-109.661568", "coordinates_geohash": "c8440xdfsk2r", "Source": "FROM STATE RECORDS", "Min": "140", "Max": "2695", "Security Flag": null, "crc_collection_name": "cutting", "sb_parent_id": "4f4e49d8e4b07f02db5df2d2", "intervals": [{"Formation": null, "Age": null, "Min Depth": null, "Max Depth": null}], "crcwc_url": "https://my.usgs.gov/crcwc/cutting/report/2474",...
This bedrock geologic map was produced by using airborne magnetic and electromagnetic surveys, data and notes from several months of fieldwork, geochemical data, and laboratory investigations. These maps are the result of new field investigations in the Eagle A-1 Quadrangle by DGGS in 1999, 2000, and 2001. Field investigations are part of a three-year mapping program to provide geologic ground truth for airborne geophysical surveys flown by DGGS in the Fortymile mining district during 1998.
This geologic map was produced by merging a bedrock geologic map and a surficial geologic map of the Eagle A-1 Quadrangle. Surficial geologic units were determined by a combination of air photo interpretation and site-specific field investigations. Bedrock geologic units were determined by using a combination of airborne magnetic and electromagnetic surveys, several months of fieldwork, geochemical data, and laboratory investigations. These maps are the result of new field investigations by DGGS in 1999 and 2001.
This map shows the distribution of surficial deposits and undifferentiated bedrock in parts of the Livengood C-3 and C-4 quadrangles, Tolovana mining district.
Core Research Center, cutting BZ00756, from well operated by U S SMELTING-VASS OILRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "BZ00756", "API Num": "2509505078", "Operator": "U S SMELTING-VASS OIL", "Well Name": "1 GEE", "Field": "RAPELJE", "State": "MT", "County": "STILLWATER", "Thin Sec": "F", "Analysis": "F", "Latitude": "45.8979553", "Longitude": "-109.2737321", "coordinates_geohash": "c84m17mqcrp8", "Source": "FROM STATE RECORDS", "Min": "327", "Max": "5500", "Security Flag": null, "crc_collection_name": "cutting", "sb_parent_id": "4f4e49d8e4b07f02db5df2d2", "intervals": [{"Formation": null, "Age": null, "Min Depth": null, "Max Depth": null}], "crcwc_url": "https://my.usgs.gov/crcwc/cutting/report/784",...
Core Research Center, cutting BZ02426, from well operated by TYLER OILRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "BZ02426", "API Num": "2509505015", "Operator": "TYLER OIL", "Well Name": "1 KENNEDY-BAHR", "Field": "DEAN DOME", "State": "MT", "County": "STILLWATER", "Thin Sec": "F", "Analysis": "F", "Latitude": "45.3970967", "Longitude": "-109.6827657", "coordinates_geohash": "c8442073q24n", "Source": "FROM STATE RECORDS", "Min": "0", "Max": "1008", "Security Flag": null, "crc_collection_name": "cutting", "sb_parent_id": "4f4e49d8e4b07f02db5df2d2", "intervals": [{"Formation": null, "Age": null, "Min Depth": null, "Max Depth": null}], "crcwc_url": "https://my.usgs.gov/crcwc/cutting/report/2570",...
Core Research Center, cutting BZ02424, from well operated by L BARKERRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "BZ02424", "API Num": "2509505016", "Operator": "L BARKER", "Well Name": "2 KENNEDY-BAHR", "Field": "DEAN DOME", "State": "MT", "County": "STILLWATER", "Thin Sec": "F", "Analysis": "F", "Latitude": "45.4009413", "Longitude": "-109.6879331", "coordinates_geohash": "c81frbzxtuvh", "Source": "FROM STATE RECORDS", "Min": "0", "Max": "2340", "Security Flag": null, "crc_collection_name": "cutting", "sb_parent_id": "4f4e49d8e4b07f02db5df2d2", "intervals": [{"Formation": null, "Age": null, "Min Depth": null, "Max Depth": null}], "crcwc_url": "https://my.usgs.gov/crcwc/cutting/report/2568",...
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