Surficial-geologic map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska

Preliminary Interpretive Report 2001-3C, Surficial-Geologic Map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska, provides 1:63,360-scale geologic mapping of the Eagle A-2 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-2 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 is colluvium, which mantles most surfaces other than the tops of ridges and those areas immediately adjacent to streams. Three levels of stream terrace can be traced along major drainages at elevations of roughly 200, 100, and 30 meters above modern streams. A fourth low terrace is limited to the southwest part of the map area. Pleistocene mammalian remains have been recovered from ice-rich organic silt and muck overlying placer gravels in many valleys. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/2671.

Data and Resources

Field Value
access_constraints ["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.", "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)."]
bbox-east-long -141.495528
bbox-north-lat 64.252564
bbox-south-lat 63.997419
bbox-west-long -142.009023
contact-email dggspubs@alaska.gov
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2001-01-01"}]
frequency-of-update notPlanned
licence ["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."]
metadata-date 2021-08-25
metadata-language eng; USA
metadata_type geospatial
old-spatial {"type": "Polygon", "coordinates": [[[-142.009023, 63.997419], [-141.495528, 63.997419], [-141.495528, 64.252564], [-142.009023, 64.252564], [-142.009023, 63.997419]]]}
progress completed
resource-type dataset
responsible-party [{"name": "Alaska Division of Geological & Geophysical Surveys", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[-142.009023, 63.997419], [-141.495528, 63.997419], [-141.495528, 64.252564], [-142.009023, 64.252564], [-142.009023, 63.997419]]]}
spatial_harvester true
temporal-extent-begin 1999-01-01
temporal-extent-end 2001-01-01
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • alder-creek
  • alluvial
  • alluvial-deposits
  • alluvial-fan
  • alluvium
  • amerigeo
  • amerigeoss
  • atwater-creek
  • buckskin-creek
  • butte-creek
  • chicken
  • chicken-creek
  • ckan
  • colluvial-deposits
  • colluvium
  • complex-deposits
  • dennison-fork
  • dewey-creek
  • dggs
  • eagle-creek
  • floodplain
  • forest-creek
  • fortymile-mining-district
  • fortymile-river
  • franklin
  • franklin-creek
  • gems
  • gems-ncgmp09
  • geo
  • geologic-map
  • geology
  • geomorphology
  • george-creek
  • geoss
  • geotechnical
  • hazards
  • jefferson-creek
  • landslide-deposit
  • liberty-creek
  • lost-chicken-creek
  • lost-chicken-hill
  • mammoth
  • mining
  • mosquito-fork
  • myers-fork
  • napoleon-creek
  • national
  • north-america
  • north-fork-fortymile-river
  • ophelia-creek
  • paleochannel
  • permafrost
  • pingos
  • placer
  • pleistocene
  • polly-creek
  • quaternary
  • soda-creek
  • south-fork-fortymile-river
  • statemap-project
  • stonehouse-creek
  • surficial
  • surficial-geologic-map
  • surficial-geology
  • switch-creek
  • tailings
  • taylor-creek
  • tephra
  • terrace
  • tin-kettle-creek
  • uhler-creek
  • united-states
  • volcanic-ash
  • voss-creek
  • wade-creek
  • walker-fork
  • wall-street-creek
  • wilson-creek
isopen False
metadata_created 2025-11-21T00:23:53.249681
metadata_modified 2025-11-21T00:23:53.249685
notes Preliminary Interpretive Report 2001-3C, Surficial-Geologic Map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska, provides 1:63,360-scale geologic mapping of the Eagle A-2 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-2 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 is colluvium, which mantles most surfaces other than the tops of ridges and those areas immediately adjacent to streams. Three levels of stream terrace can be traced along major drainages at elevations of roughly 200, 100, and 30 meters above modern streams. A fourth low terrace is limited to the southwest part of the map area. Pleistocene mammalian remains have been recovered from ice-rich organic silt and muck overlying placer gravels in many valleys. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/2671.
num_resources 8
num_tags 78
title Surficial-geologic map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska