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Thomas K. Bundtzen led the project and was assisted by Gregory M. Laird during all three seasons, and by Virginia F. Ferrell, Nicki D. Coursey, and Karen S. Emmel in 1979. Specialists contributed fossil locality data, paleocurrent measurements, K-Ar age determinations, geochemical analyses, gold production figures, and uranium and thorium analyses. Additional geological comparisons were provided by U.S. Geological Survey staff familiar with nearby quadrangles. Long-time local residents shared information on past mineral activity, and the Rossander mining camp on Yankee Creek served as the 1979 base camp. The report was reviewed by DGGS staff. This map was converted to GeMS or digitized into GeMS by Kinney Engineering, LCC., quality controlled, and then finalized by DGGS staff (Chris Wyatt and Mike Hendricks). Ally M. Steinleitner implemented final database quality control and packaging. This geologic map (or report or conversion or product, etc.) was funded by the USGS National Cooperative Geologic Mapping Program under STATEMAP award number G24AC00521, 2024, and the State of Alaska General Fund. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government.
This report provides geologic mapping and resource information for parts of the McGrath, Iditarod, and Ophir 1:250,000 quadrangles of western interior Alaska. The mapping improves understanding of bedrock geology, surficial deposits, and structural features, and documents the distribution and geologic controls of placer gold deposits in the Ophir mining precinct and Candle Hills. These data support mineral resource evaluation, land management, and future geologic investigations in the region.
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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.
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.
| Data format: | geologic map in format geodatabase |
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https://doi.org/10.14509/53 |