border: A polygon shapefile that provides a generalized outline of the geographic area described by this report. map-package: This publication's data is contained in a MAP PACKAGE (.mpk). The map package contains a compressed ESRI map document (.mxd), and the symbolized data files that are referenced by the layers of the .mxd file, and the fonts that are required to provide the appropriate symbology. The geodatabase used in this publication is NCGMP09 and FGDC compliant and as a result requires special fonts for correct geologic feature labeling. For more information <http://ncgmp.usgs.gov>. YOU MUST ENSURE THE FGDC FONTS ARE INSTALLED ON YOUR COMPUTER BEFORE UNPACKING THE MAP PACKAGE! The FGDC required fonts are included in this publication's zip file. To open and unpack the map package, navigate to the map package (.mpk) double click it or drag it into ArcGIS. The map package will unpack into ArcGIS's default package location and automatically open the map document.
Stevens, D.S.P., Solie, D.N., Bachmann, E.N., and Wright, T.C., 2015, Geospatial database: Compiled geologic mapping in the area of the proposed Susitna-Watana hydroelectric project, south-central Alaska: Miscellaneous Publication MP 156, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
This is a vector data set.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest .00000001
Ordinates (y-coordinates) are specified to the nearest .00000001
Planar coordinates are specified in Meters
The horizontal datum used is North American Datum of 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 1/294.9786982.
Special Features of the map document 1. There are two data frames: a. The primary data frame titled 'Compiled Geologic Data: Susitna-Watana' b. An overview data frame 'Overview' that shows the location of the project data within Alaska. 2. Within the primary data frame there are three groups a. Reference Grid Layers (this group is turned off initially) i. Alaska Public Land Survey System Boundaries: This sub group has layers, medians, townships and sections. These layers are set with scale dependent visibility. The Township layer is visible at less than 1:1,500,000 and labels appear at scales less than 1:750,000. The Section layer is visible less than 1:250,000 and labels appear at scales less than 1:1000,000. ii. 1:63,360 quadrangle boundaries: This layer shows the 1:63,000 quad boundaries. Labels are turned on. b. Main Group: The main groups shows the compiled contacts and faults, map unit polygons, small scale raster images of compilation, and extents for all data Sources as polygons. i. Map Units, Contacts, and Faults as Raster (visible at greater than or equal to 1:100,000). This raster image of the combination of Map units with Contacts and Faults is designed to make navigation faster at smaller scales without having to draw all the vector geometries. When the user zooms in to 1:100,000 this layer turns off. ii. Map Unit Polygons (visible at less than or equal to 1:100,000). This layer is symbolized with NCGMP09 representations. Labels use the FGDCGeoAge Font and are turned on. Map tips (hover information) are turned on based on the description field and gives text description of the Map unit. iii. Contacts and Faults (visible at less than or equal to 1:100,000). This layer is symbolized with representation rules corresponding to the FGDC symbols for geologic maps. Labels use the Arial Font and are turned on. iv. Extents for All Data Sources. This layer is turn off initially and shows if turned on by the user the extent of source data used for the compilation. c. Source Documents (this group is turned off initially) i. This group has subgroups for each data source used for the compilation that includes the raster base map, map unit polygons, along with contacts and faults. Labels are turned off initially for these layers. ii. For each data source there are hyperlinks to the appropriate DGGS publication page. You can access these hyperlinks within the identification window or the hyperlink tool. iii. Bookmarks are created for each of the data sources and can be accessed from the menu. 3. The Compiled Geologic Data: a. Susitna-Watana data frame is set to clip all data to the project area Has a reference scale of 1:100,000,
This capital project was funded by the Alaska Energy Authority (AEA) through the Alaska Department of Commerce, Community, and Economic Development (DCCED).
(907)451-5020 (voice)
dggsgis@alaska.gov
The Alaska Energy Authority (AEA) in 2010 was authorized by the State of Alaska to begin laying the groundwork to develop the Susitna-Watana Hydroelectric Project on the Susitna River, Alaska. The project was intended to help meet the future electrical needs of Alaska's Railbelt Region by providing clean, renewable energy at the lowest possible long-term cost. An accurate assessment of the site geology is important for dam location, design, and construction, as well as for other planning and land management decisions in the region. This geodatabase product will be a valuable reference resource for developers, planners, and scientists working on the hydroelectric project, as well as for any other projects in the area.
Acres, 1982, Susitna Hydroelectric Project, Supplement to 1980-81 Geotechnical Report: Alaska Power Authority, Anchorage, Alaska.
Acres, 1982, Susitna Hydroelectric Project: 1980-81 Geotechnical Report: null v. 2, part 2, Appendix G-K, final draft, Alaska Power Authority, Anchorage, Alaska.
Clautice, K.H., 1990, Geologic map of the Valdez Creek mining district: Public Data File PDF 90-30, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Clautice, K.H., Newberry, R.J., Pinney, D.S., Blodgett, R.B., Bundtzen, T.K., Gage, B.G., Harris, E.E., Liss, S.A., Miller, M.L., Reifenstuhl, R.R., and Clough, J.G., 2001, Geologic map of the Chulitna region, southcentral Alaska: Report of Investigation RI 2001-1B, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Csejtey, Bela, Jr., 1974, Reconnaissance geologic investigations in the Talkeetna Mountains, Alaska: Open-File Report OF 74-147, U.S. Geological Survey, United States.Online Links:
Csejtey, Bela, Jr., Mullen, M.W., Cox, D.P., and Stricker, G.D., 1992, Geology and geochronology of the Healy Quadrangle, south-central Alaska: Miscellaneous Investigations Series Map I 1961, U.S. Geological Survey, United States.Online Links:
Csejtey, Bela, Jr., Nelson, W.H., Jones, D.L., Silberling, N.J., Dean, R.M., Morris, M.S., Lanphere, M.A., Smith, J.G., and Silberman, M.L., 1978, Reconnaissance geologic map and geochronology, Talkeetna Mountains Quadrangle, northern part of Anchorage Quadrangle, and southwest corner of Healy Quadrangle, Alaska: Open-File Report OF 78-558-A, U.S. Geological Survey, United States.Online Links:
Eakins, G.R., Jones, B.K., and Forbes, R.B., 1977, Investigation of Alaska's uranium potential: Alaska Open-File Report AOF 109, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Kline, J.T., Bundtzen, T.K., and Smith, T.E., 1990, Preliminary bedrock geologic map of the Talkeetna Mountains D-2 Quadrangle, Alaska: Public Data File PDF 90-24, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Merritt, R.D., Eakins, G.R., and Clough, J.G., 1982, Coal investigation of the Susitna Lowland: Alaska Open-File Report AOF 142, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Reger, R.D., Bundtzen, T.K., and Smith, T.E., 1990, Geology of the Healy A-3 Quadrangle, Alaska: Public Data File PDF 90-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Richter, D.H., 1963, Geology of the Portage Creek Susitna River area: Geologic Report GR 3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Smith, T.E., Albanese, M.D., and Kline, G.L., 1988, Geologic map of the Healy A-2 Quadrangle, Alaska: Professional Report PR 95, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Consultants, Woodward-Clyde, 1982, Final report on seismic studies for Susitna Hydroelectric Project: Alaska Power Authority, Anchorage, Alaska.
Data sources used in this process:
Certainty in identification of the map units varies due to the scale and interpretive nature of the mapping. Per NCGMP09 (USGS National Cooperative Geologic Mapping Program - Draft Standard Format for Digital Publication of Geologic Maps) specifications, the authors have assigned a confidence value to each map unit boundary and line segment to indicate their degree of confidence in the positioning and identification of the element at the mapped scale. This publication is a DGGS MISCELLANEOUS PUBLICATION. It provides a compilation of both previously published data as well as data compiled from unpublished, but publicly available, geotechnical reports. Bedrock geology was reviewed and revised by an independent contractor to ensure consistency with current geologic interpretations of the area. Interpretations or conclusions contained in this publication are subject to change if new data becomes available.
Authors compiled features from georeferenced scans and digitized vector files of the original geologic source maps. Per NCGMP09 specifications, the authors have assigned a confidence value to each polygon, line, or point to indicate their degree of confidence in the positioning and identification of the element at the mapped scale.
This report and digital dataset provide information about geologic features that can be identified or interpreted at a scale of 1:63,360. DGGS geologists reviewed and analyzed existing geologic mapping for quality and completeness. The best available geologic mapping was synthesized into a single compilation data layer, and is packaged along with georeferenced scans and digitized vector files of the original geologic source maps. Bedrock geology was reviewed and revised by an independent contractor to ensure consistency with current geologic interpretations of the area. However, significant additional work would be required to fully resolve both uncertainties noted in the originating data sources or inconsistencies between various data sources.
Polygon topology was implemented per NCGMP09 specifications (polygons must not overlap, polygons must not have gaps, boundaries must be overlain by lines in ContactsAndFaults). All polygon features were topologically validated using ArcGIS for Desktop.
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 156
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: | ESRI map package |
|---|---|
| Network links: |
<http://dx.doi.org/10.14509/29446> |
(907)451-5020 (voice)