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This map illustrates extents and types of unconsolidated deposits and bedrock in the Big Delta A-4 Quadrangle, Alaska. This map is based on field observations begun by P�w� in 1949 and by Reger in 1976. Unit characteristics and extents were determined during field visits and by interpreting 1:40,000-scale black-and-white aerial photographs taken in August 1949 and 1:63,360-scale, false-color infrared aerial photographs taken in July 1978, August 1980, and August 1981.
Tags: Alaska Range,
Alluvium,
Big Delta,
Big Delta Quadrangle,
Delta River, All tags...
Geology,
Glaciation,
Loess,
Outwash,
Permafrost,
Radiocarbon Dating,
Silt,
Surficial Geology,
Tanana River,
Tephra,
Till,
geoscientificInformation, Fewer tags
Between 27 and 11 kyr ago, during the last major (Naptowne) glaciation, the northwestern and western Kenai Peninsula and the Cook Inlet trough were covered by ice except for local nunataks and small refugia, like the Caribou Hills. Landforms related to four glacial stades are recognized and paleogeographic maps document ice limits, drainage systems, glacial-impounded lakes, and glaciomarine terraces. Numerous multidisciplinary studies of glacial, vegetation, and insect histories document Holocene climatic changes.
Tags: Alluvial Deposits,
Climate Change,
Coastal Erosion,
Cook Inlet,
Erosion, All tags...
Geologic Hazards,
Geology,
Geomorphology,
Glacial Deposits,
Glacial Drift,
Glacial Geology,
Glaciation,
Gravel,
Homer,
Ice,
Ice Contact Deposits,
Ice-Contact,
Kenai Peninsula,
Kenai Quadrangle,
Kenai Spur Highway,
Meltwater,
Outwash,
Radiocarbon Dating,
Seldovia Quadrangle,
Seward Highway,
Seward Quadrangle,
Sterling Highway,
Surficial Geology,
Tephra,
Tephrachronology,
Terrace,
Tsunami,
Vegetation,
geoscientificInformation, Fewer tags
This report provides detailed mapping (1:63,360-scale) in the Dalton Highway area, from Atigun Gorge to Slope Mountain, in the west-central Philip Smith Mountains quadrangle. The map area extends from the northern flank of the Endicott Mountains into the Arctic Foothills province.
Tags: Alaska, State of,
Allochthon,
Alluvial,
Arenite,
Atigun Gorge, All tags...
Atigun River,
Aufeis,
Barite,
Biostratigraphy,
Brooks Range,
Carbonates,
Chert,
Clastics,
Coal,
Colluvial Deposits,
Conglomerate,
Correlation,
Dalton Highway,
Depositional Environment,
Endicott Mountains,
Eolian,
Fan,
Faulting,
Fluvial,
Folding,
Galbraith Lake,
Geologic Map,
Glacial,
Glacial Lake,
Glaciation,
Grainstone,
Graywacke,
Ice-Contact,
Igneous,
Imnavait Mountain,
Itigaknit Mountain,
Itkillik River,
Kettles,
Kuparuk River,
Lacustrine,
Landslide,
Limestone,
Measured Stratigraphic Section,
Mudstone,
Organic Geochemistry,
Orogeny,
Outwash,
Packstone,
Paleocurrent,
Paleontology,
Petroleum,
Philip Smith Mountains Quadrangle,
Porosity,
Provenance,
Reservoir,
Rock-Glacier,
STATEMAP Program,
Sagavanirktok River,
Sandstone,
Shale,
Siderite,
Slope Mountain,
Solifluction,
Stratigraphy,
Structure,
Surficial,
Tectonics,
Terrace,
Toolik Lake,
Toolik River,
Trans-Alaska Pipeline,
Turbidites,
Uplift,
Wackestone,
geoscientificInformation, Fewer tags
This report provides detailed (1:63,360-scale) surficial-geologic mapping in the Dalton Highway area, from the Sagavanirktok to the Itkillik Rivers, in the west-central Philip Smith Mountains quadrangle. The map area extends from the northern flank of the Endicott Mountains into the Arctic Foothills province.
Tags: Alaska, State of,
Alluvial,
Atigun Gorge,
Atigun River,
Aufeis, All tags...
Avalanche,
Beach Deposits,
Brooks Range,
Colluvial Deposits,
Correlation,
Dalton Highway,
Drainage Patterns,
Dunes,
Endicott Mountains,
Eolian,
Erratics,
Esker,
Fan,
Floodplain,
Fluvial,
Galbraith Lake,
Geologic Map,
Glacial,
Glacial Drift,
Glacial Lake,
Glaciation,
Glaciers,
Gravel,
Ice Contact Deposits,
Imnavait Mountain,
Interglaciation,
Itigaknit Mountain,
Itkillik River,
Kettles,
Kuparuk River,
Lacustrine,
Landslide,
Levees,
Loess,
Moraines,
Outwash,
Paleosols,
Peat,
Permafrost,
Philip Smith Mountains Quadrangle,
Piracy,
Radiocarbon Dating,
Reference Information,
Rock Glaciers,
STATEMAP Project,
Sagavanirktok River,
Sand,
Silt,
Slope Mountain,
Solifluction,
Stratigraphy,
Surficial,
Talus,
Tectonics,
Terrace,
Toolik Lake,
Toolik River,
Trans-Alaska Pipeline,
Tundra,
Vegetation,
geoscientificInformation, Fewer tags
Alaska Division of Geological & Geophysical Surveys (DGGS) has conducted 1:63,360-scale geologic mapping of the Sagavanirktok B-1 Quadrangle (640 square km�equivalent to four 7.5 minute quadrangles). This mapping project reinterprets micropaleontologic correlations for 17 Sagavanirktok Quadrangle wells, and reprocesses data from the one publicly-available seismic line. Surface geologic mapping, subsurface-to-surface stratigraphic age control, and seismic framework are required to reliably decipher the complex geology of this key area of the Brooks Range. Outcrops within the Sagavanirktok B-1 Quadrangle are the closest surface expressions of Prudhoe Bay source and reservoir rocks. This study yields critical petroleum-related...
Tags: Arctic National Wildlife Refuge,
Aufeis,
Brooks Range,
C14,
Eolian, All tags...
Fluvial,
Geologic Map,
Geomorphology,
Glacial,
Glacial Drift,
Glacial Geology,
Glacial Processes,
Glaciation,
Glaciers,
Icings,
Moraines,
North Slope Basin,
Shaviovik River,
Silt,
Surficial,
Surficial Geology,
Thaw Lakes,
geoscientificInformation, Fewer tags
Alaska Division of Geological & Geophysical Surveys (DGGS) has conducted 1:63,360-scale geologic mapping of the Sagavanirktok B-1 Quadrangle (640 square km�equivalent to four 7.5 minute quadrangles). This geologic map was produced by merging a bedrock geologic map and a surficial geologic map of the Eagle A-2 Quadrangle. This mapping project reinterprets micropaleontologic correlations for 17 Sagavanirktok Quadrangle wells, and reprocesses data from the one publicly-available seismic line. Surface geologic mapping, subsurface-to-surface stratigraphic age control, and seismic framework are required to reliably decipher the complex geology of this key area of the Brooks Range. Outcrops within the Sagavanirktok B-1...
Tags: Arctic National Wildlife Refuge,
Aufeis,
Basins,
Biostratigraphy,
Brooks Range, All tags...
C14,
Carbonates,
Clastics,
Coal,
Depositional Analysis,
Diagenesis,
Eolian,
Faulting,
Fluvial,
Folding,
Formations,
Geologic,
Geologic Map,
Geomorphology,
Glacial,
Glacial Geology,
Glacial Processes,
Glaciation,
Glaciers,
Icings,
Marine,
Marine Transgressions,
Measured Stratigraphic Section,
Modal Analysis,
Moraines,
North Slope Basin,
Orogeny,
Paleobotany,
Paleoenvironment,
Paleontology,
Palynology,
Petrography,
Petroleum,
Provenance,
Resource Management,
Sandstone,
Sedimentary,
Shale,
Shaviovik River,
Silt,
Structure,
Surficial,
Surficial Geology,
Tectonics,
Thaw Lakes,
Trace Fossils,
Turbidites,
Volcanic Ash,
geoscientificInformation, Fewer tags
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