USGS Geoscience Data Catalog
Additional USGS Geoscience data can be found by geographic location or by publication series.
Troutman, Sandra M. , and Stanley, Richard G. , 2004, Maps showing sedimentary basins, surface thermal maturity, and indications of petroleum in the central Alaska province: Indications of petroleum: U.S. Geological Survey Miscellaneous Field Studies Map MF-2428, U.S. Geological Survey, Menlo Park, California.Online Links:
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.002. Longitudes are given to the nearest 0.002. Latitude and longitude values are specified in Decimal degrees.
The horizontal datum used is North American Datum 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.978698.
| Value | Definition |
|---|---|
| Bethel | Data point is located in the vicinity of Bethel Basin |
| Bristol Bay | Data point is located in the vicinity of Bristol Bay basin |
| Innoko | Data point is located in the vicinity of Innoko basin |
| Kandik | Data point is located in the Kandik Basin region |
| Kobuk | Data point is located in the vicinity of the Kobuk flysch belt |
| Kotzebue | Data point is located in the vicinity of Kotzebue Basin |
| Kuskokwim | Data point is located in the vicinity of Kuskokwim flysch belt |
| Nenana | Data point is located in the vicinity of Nenana basin |
| Northway | Data point is located in the vicinity of Northway lowlands |
| Norton | Data point is located in the vicinity of Norton basin |
| Yukon Flats | Data point is located in the vicinity of Yukon Flats basin |
| Yukon-Koyukuk | Data point is located in the vicinity of Yukon-Koyukuk flysch belt |
| Kuskokwim flysch belt |
| Value | Definition |
|---|---|
| 1 | Well with oil show(s) |
| 2 | Well with gas show(s) |
| 3 | Well with no oil or gas shows |
| 4 | Oil seep, confirmed |
| 5 | Oil seep, reported but unconfirmed |
| 6 | Oil seep, reported but doubtful or disproved |
| 7 | Gas seep, confirmed |
| 8 | Gas seep, reported but unconfirmed |
| 9 | Gas seep, reported but doubtful or disproved |
| 10 | Outcrop of oil shale or oil-bearing rock |
| Range of values | |
|---|---|
| Minimum: | 1 |
| Maximum: | 95 |
| Units: | nominal |
Data compiled by Rick Stanley and Sandra Troutman, USGS Menlo Park, CA
650-329-4918 (voice)
650-329-4975 (FAX)
rstanley@usgs.gov
This database and accompanying text file describe historical and modern occurrences of petroleum in wells and natural seeps in Central Alaska at a regional (1:2,500,000) scale. This database was developed for the US Geological Survey's petroleum assessment of Central Alaska. The report is intended to provide information on historical and modern indications of petroleum within the Central Alaska Province boundaries.
Miller, D. J., Payne, T. G., and Gryc, George, 1959, Geology of possible petroleum provinces in Alaska: U.S. Geological Survey Bulletin 1094.
Person who carried out this activity:
650-329-4974 (voice)
650-329-4975 (FAX)
stroutman@usgs.gov
Person who carried out this activity:
650-329-4974 (voice)
650-329-4975 (FAX)
stroutman@usgs.gov
The level of accuracy of individual data points is included in the database and is discussed in the text accompanying the coverage.
Positional accuracy of data varies depending on the source of the information. Points attributed to Miller and others (1959) include inherent errors in accuracy associated with determining locations from third-party sources and are discussed in the original text. Points from Miller and others (1951) were digitized from the original paper map at a scale of 1:2,500,000 georeferenced to a state of Alaska coverage with an RMS error of .002 digitizer inches. At this scale, individual points are approximately 1mm in diameter and therefore have a positional accuracy of .5mm at 1:2,500,000, or within 1.25 km on the ground. The general positional accuracy of onshore wells was taken from public record survey data maintained by the Alaska Oil and Gas Conservation Commission and is accurate to within 10 meters on the ground. Locations of offshore wells are from survey data maintained by the Minerals Management Service. This survey data was plotted onto 1:63,360 scale maps in order to determine latitude and longitude. This is the largest scale map available for most of Alaska, with the exception of population centers. These data locations are deemed to be accurate to within 1km on the ground. Locations of all other modern indications of petroleum are taken from references as noted.
This coverage is intended to describe historical reports of indications of petroleum occurring within the central Alaska province boundary and does not include indications of petroleum within the state of Alaska outside this boundary. This information has been solicited and collected from available sources but may not represent all such occurrences. Updates will be made to the database as needed.
Are there legal restrictions on access or use of the data?
- Access_Constraints: none
- Use_Constraints:
- Uses of this digital coverage should not violate the spatial resolution of the data. Although the digital form of the data removes the constraint imposed by the scale of a paper map, the detail and accuracy inherent in map scale are also present in the digital data. The fact that this database was edited for a scale of 1:2,500,000 means that higher resolution information is not present in the dataset. Plotting at scales larger than 1:2,500,000 will not yield greater real detail, although it may reveal fine-scale irregularities below the intended resolution of the database
1-888-ASK-USGS (voice)
303-202-4693 (FAX)
ask@usgs.gov
USGS Miscellaneous Field Studies Map MF-2428
The U.S. Geological Survey (USGS) provides these geographic data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied, as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by USGS. This digital database of historic indication of petroleum in the central Alaska province is 1:2,500,000 map-scale and any derivative maps thereof, is not meant to be used or displayed at any scale larger than 1:2,500,000.
| Data format: | Indicators of petroleum in format ArcInfo export (version 8.x) Size: 54 kilobytes |
|---|---|
| Network links: |
<http://pubs.usgs.gov/mf/2003/2428/digital_files/iop.e00> |
703-648-6533 (voice)
703-648-6252 (FAX)
pschweitzer@usgs.gov
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://geo-nsdi.er.usgs.gov/metadata/map-mf/2428/iop.faq.html
Page Contact Information: Peter Schweitzer
Page Last Modified: Tuesday, 03-Nov-2009 15:22:33 EST
