Koehler, R.D., Burns, P.A.C., and Weakland, J.R., 2013, Digitized faults of the Neotectonic map of Alaska (Plafker and others, 1994): Miscellaneous Publication MP 150, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
This is a vector data set.
The map projection used is Albers Conical Equal Area.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.000001
Ordinates (y-coordinates) are specified to the nearest 0.000001
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is North American Datum of 1983.
The semi-major axis of the ellipsoid used is 6378137.
The flattening of the ellipsoid used is 1/298.257222101.
The authors extend gratitude to many staff members of the Division of Geological & Geophysical Surveys who assisted in completing this project. Partial funding was provided by the U.S. Geological Survey National Earthquake Hazards Reduction Program (Grant #03WRAG0027) and the State of Alaska, Division of Homeland Security and Emergency Management, Earthquake Hazards Reduction State Assistance Program (Grant #39320/39507).
(907)451-5029 (voice)
dggsgis@alaska.gov
To assist the user community and encourage more detailed mapping and paleoseismic research, we digitized the fault and fold traces from the Plafker map and created two vector shapefiles of these structures. These files are available for download.
Plafker, George, Gilpin, L.M., and Lahr, J.C., 1994, Neotectonic map of Alaska: The Geology of Alaska: Geological Society of America, Boulder, CO, United StatesOnline Links:
Plafker, George, and Berg, H.C., 1994, The Geology of Alaska.Online Links:
U.S. Geological Survey (USGS), EROS Data Center, 1999, National Elevation Dataset: U.S. Geological Survey, Sioux Falls, SD.Online Links:
Data sources used in this process:
Data sources used in this process:
Koehler, R.D., Farrell, Rebecca-Ellen, Burns, P.A.C., and Combellick, R.A., 2012, Quaternary faults and folds in Alaska: A digital database: Miscellaneous Publication MP 141, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Koehler, R.D., 2013, Quaternary Faults and Folds (QFF): Digital Data Series DDS 3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
The features in the dataset were entirely derived from the Neotectonic map of Alaska (Plafker, George and others, 1994). The shapefiles in this data release provide only the location of the features and do not indicate feature type (fault vs. fold). Several geologists familiar with the Neotectonic map of Alaska have examined the line-work to ensure that all fault and fold features on the originating map were replicated.
The scale of the originating Plafker map is 1:2,500,000, thus the data are not intended for depiction on large-scale maps. After digitizing the map features we adjusted line-work as needed to correct line segments that were obviously inconsistent with the USGS National Elevation Dataset
The Neotectonic map of Alaska (Plafker, George and others, 1994) represents first comprehensive compilation of tectonic faults and folds in Alaska. DGGS publication MP 141 (Koehler, R.D. and others, 2012) includes significantly more data which, in some cases, may reflect more recent interpretations. This dataset (MP150) provides only the line traces of the structures that were displayed on the Plafker map.
Not applicable
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
- Use_Constraints:
- Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
(907)451-5020 (voice)
(907)451-5050 (FAX)
dggspubs@alaska.gov
MP 150
The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount.
| Data format: | vector digital data |
|---|---|
| Network links: |
<http://dx.doi.org/10.14509/24791> |
(907)451-5020 (voice)