Geologic map of the Tanana A-1 and A-2 quadrangles, central Alaska

This report provides detailed (1:63,360-scale) mapping of the Tanana A-1 and A-2 quadrangles (500 square miles; equivalent to eight 7.5-minute quadrangles). The area is part of the Manley Hot Springs-Tofty mining districts and adjacent to the Rampart mining district to the south of the Tanana B-1 Quadrangle. This report includes detailed bedrock, surficial, structural, and stratigraphic data. Based on the resulting geologic maps, field investigations, and laboratory materials analyses, the report also includes derivative maps of geologic construction materials and geologic hazards. The Tanana A-1 and A-2 Quadrangles and surrounding area comprise several isolated mountainous ridges in the western Yukon-Tanana Upland...

Tags: 40Ar/39Ar, Aerial Photography, Aeromagnetic Map, Aeromagnetic Survey, Age Dates, All tags... Bibliography, Biostratigraphy, CIPW Norms, Carbonates, Cerium, Clastics, Conductivity Survey, Core Logs, Cultural Resources, Depositional Environment, Diagenesis, Disseminated, Economic Geology, Economic Study, Electromagnetic Survey, Epithermal, Erosion, Faulting, Folding, Fossils, Geologic Map, Geomorphology, Geophysical Map, Glacial, Glacial Processes, Gold, Greenschist, Greisen, Historic Resources, Hot Springs, K-Ar, Lab Methods, Lode, Magnetic Susceptibility, Magnetometer Survey, Major Oxides, Manley Basin, Marine, Measured Stratigraphic Section, Metamorphic Grade, Metamorphism, Mineralogy, Mining, Modal Analysis, Niobium, Ores, Orogeny, Paleobotany, Paleocurrent, Paleoenvironment, Paleontology, Palynology, Petrogenesis, Petrography, Petrology, Placer, Plutonic, Plutonic Hosted, Precious Metals, Production Data, Provenance, Rare Earth Elements, Reconstructions, Regional, Regional Metamorphism, Remote Sensing, Resistivity Survey, Resource Assessment, Sandstone, Sedimentary, Sedimentation, Shale, Silver, Structure, Structure Map, Surficial, Tectonic Map, Tectonics, Terranes, Topographic Map, Turbidites, Type Section, Uplift, Volcanic, Volcanic Hosted, Yukon River, geoscientificInformation, Fewer tags

Geologic map of the Dalton Highway (Atigun Gorge to Slope Mountain) area, southern Arctic Foothills, Alaska

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

Interpretive bedrock-geologic map of the Sagavanirktok B-1 Quadrangle, eastern North Slope, Alaska

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, Basins, Biostratigraphy, Brooks Range, Carbonates, All tags... Clastics, Coal, Depositional Environment, Diagenesis, Faulting, Fluvial, Folding, Formations, Fossils, Geologic, Glacial Processes, Marine, Marine Transgressions, Measured Stratigraphic Section, Modal Analysis, North Slope Basin, Orogeny, Paleobotany, Paleoenvironment, Paleontology, Palynology, Petrography, Petroleum, Provenance, Resource Assessment, Sandstone, Sedimentary, Shale, Shaviovik River, Structure, Surficial, Tectonics, Trace Fossils, Turbidites, Volcanic Ash, geoscientificInformation, Fewer tags

Facies associations, sand body geometry, and depositional systems in Late Oligocene-Pliocene strata, southern Kenai Peninsula, Cook Inlet, Alaska: Report on progress during the 2006-07 field season

This preliminary report is a summary of progress made during the 2006-07 field seasons reconstructing depositional systems in Tertiary strata exposed in the Homer-Kachemak Bay area.The study area addressed in this report extends from Clam Gulch in the north to Coal Cove in the south.Tertiary strata in this area are only mildly deformed and provide a relatively clear view of depositional systems and sand body geometries along the eastern basin edge and their change from basin edge to more basin axial positions.

Tags: Basins, Bluff Point, Clam Gulch, Coal Cove, Cook Inlet, All tags... Cook Inlet Basin, Deep Creek, Diamond Gulch, Falls Creek, Fox River, Fritz Creek, Kachemak Bay, Kenai National Wildlife Refuge, Kenai Peninsula, Measured Sections, Measured Stratigraphic Section, Point Pogibshi, Port Graham, geoscientificInformation, Fewer tags

Geological map of the Sagavanirktok B-1 Quadrangle, eastern North Slope, Alaska

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