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This surficial-geologic map shows the distribution of unconsolidated deposits and undifferentiated bedrock in the Faith Creek area in the Circle A-4, A-5, B-4, and B-5 quadrangles. This map was prepared principally by the interpretation of 1:63,360-scale, false-color, infrared aerial photographs taken in 1979 and 1981 and is locally verified by ground observations during field work in 2007.
Tags: Aerial Geology,
Alluvial Deposits,
Alluvial Fan,
Alluvium,
Chatanika River, All tags...
Circle Quadrangle,
Colluvial Deposits,
Colluvium,
Complex Deposits,
Fairbanks Mining District,
Faith Creek,
Fluvial,
Geologic Map,
Geomorphology,
Glacial Deposits,
Glacial Drift,
Glacial Geology,
Landslide,
Landslide Deposit,
Man-Made Deposits,
Mining,
Pingos,
Placer,
Sourdough Camp,
Steese Highway,
Surficial,
Surficial Geologic Map,
Surficial Geology,
Terrace,
Till,
geoscientificInformation, Fewer tags
This report provides detailed (1:63,360-scale) mapping of portions of U.S. Geological Survey Circle B-2 (1955), B-3 (1955), B-4 (1952), C-2 (1955), C-3 (1955), and C-4 (1952) quadrangles. The area is part of the Circle mining district and adjacent to the Fairbanks mining district. This report includes detailed geologic, structural, stratigraphic, and geochronologic data. Based on the resulting geologic maps, field investigations, and laboratory materials analyses, the project has also generated derivative maps of geologic construction materials and geologic hazards.
Tags: Aereal,
Aerial Photography,
Aeromagnetic Survey,
Age Dates,
Alaska, State of, All tags...
Alluvial Deposits,
Alluvium,
Amphibolite,
Ar-Ar,
Bedrock,
Bibliography,
Birch Creek,
C14,
Carbonates,
Circle Hot Springs,
Circle Mining District,
Circle Quadrangle,
Clastics,
Coal,
Colluvial Deposits,
Colluvium,
Conductivity Survey,
Conodonts,
Crooked Creek,
Electromagnetic Survey,
Fan,
Faulting,
Faults,
Fluvial,
Folding,
Fossils,
Geologic,
Geomorphology,
Glacial,
Glacial Deposits,
Glacial Drift,
Granite,
Hornblende,
Hornfels,
Igneous Rocks,
K-Ar,
Magnetite,
Major Oxides,
Mammoth Creek,
Mastodon Dome,
Metamorphic Grade,
Metamorphic Minerals,
Metamorphism,
Mineralogy,
Modal Analysis,
Petrography,
Plutonic,
Plutonic Hosted,
Porphyry,
Precious Metals,
Quartz,
Regional,
Regional Metamorphism,
Sample Location,
Sandstone,
Schist,
Sedimentary,
Structure,
Surficial,
Tectonics,
Terranes,
geoscientificInformation, Fewer tags
This report presents the findings of a geologic and geotechnical evaluation of a landslide at the Yukon River bridge (the E.L. Patton Bridge). The Yukon River bridge landslide occurred in fall 2012 between approximately 375 and 575 feet west of the bridge. Although there was no damage to the bridge foundation, the landslide's close proximity to the bridge and concerns over additional failures prompted multiple evaluations, including landslide documentation, drainage assessments, and geotechnical studies. This report was prepared to convey the general characteristics of the rock mass, characteristics of rock discontinuities, and the geomorphic expression of the 2012 landslide in the vicinity of the bridge. We determined...
Tags: Alluvial Fan,
Alluvium,
Coastal and River Hazards,
Colluvial Deposits,
Colluvium, All tags...
Dalton Highway,
Drainage Patterns,
Earthquake Related Hazards,
Engineering,
Erosion,
Fracturing,
Geological Process,
Geology,
Geomorphology,
Geotechnical,
Hazards,
Landslide,
Livengood Quadrangle,
Loess,
Permafrost and Periglacial,
Slope Instability Hazards,
Surficial,
Trans-Alaska Pipeline,
Translational Landslide,
Transportation Corridor,
Yukon River,
geoscientificInformation, Fewer tags
The Alaska Division of Geological & Geophysical Surveys (DGGS) has conducted 1:63,360-scale geologic mapping of the Eagle A-1 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 potential near-surface sources of various geologic materials that may be useful for construction. Field observations indicate that each geologic unit (for example, stream alluvium) has a definite composition or range of composition. Therefore, the probable presence of materials is interpreted from the distribution of geologic units on the geologic map of this quadrangle. This map is generalized and is not intended to show exact locations...
Tags: Alluvial Deposits,
Alluvium,
Boundary (Place),
Colluvial Deposits,
Colluvium, All tags...
Construction Materials,
Crushed Gravel,
Crushed Rock,
Decorative Stone,
Drain Rock,
Engineering,
Engineering Geology,
Fortymile Mining District,
Geologic Hazards,
Geologic Map,
Geologic Materials,
Ground Ice,
Jack Wade Junction,
Permafrost,
Photogeologic Lineaments,
Pingos,
Rip Rap,
STATEMAP Project,
Sand and Gravel,
Steele Creek Dome,
Taylor Highway,
Thawing Permafrost,
Top of the World Highway,
Unconsolidated Deposits,
Walker Fork,
geoscientificInformation, Fewer tags
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