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Mineral Resources Section personnel from the Alaska Division of Geological & Geophysical Surveys (DGGS) carried out a geologic field survey, including mapping and sampling, in the eastern part of the Bonnifield mining district in the Fairbanks A-1 and A-2 and the Healy D-1 and D-2 quadrangles, Alaska, from June 16 through July 18, 2008. The fieldwork provides basic information critical to building an understanding of Alaska's geology and is part of an integrated program of airborne geophysical surveys followed by geologic mapping. Specifically, this work provides geologic context for geophysical surveys conducted in 2006. Interpretation and synthesis of this data has been presented in professional and trade meetings....
Tags: Alaska Range,
Bedrock,
Chute Creek,
Dry Creek,
Dry Creek prospect, All tags...
Fairbanks Quadrangle,
Geologic,
Geology,
Glory Creek,
Glory Creek prospect,
Healy Quadrangle,
Igneous,
Igneous Rocks,
Kansas Creek,
Minerals,
Red Mountain Creek,
Rocks,
Rogers Creek,
STATEMAP Project,
Sedimentary Rocks,
Sheep Creek,
Slide Creek,
Snow Mountain Gulch,
WTF (Western Tundra Flats) prospect,
Wood River,
geoscientificInformation, Fewer tags
USGS Historical Quadrangle in GeoPDF.
Tags: 7.5 x 7.5 minute,
Downloadable Data,
GeoPDF,
GeoTIFF,
Historical Topographic Maps, All tags...
Historical Topographic Maps 7.5 x 7.5 Minute Map Series,
Map,
ND,
Sheep Creek,
imageryBaseMapsEarthCover, Fewer tags
USGS Historical Quadrangle in GeoPDF.
Tags: 7.5 x 7.5 minute,
Downloadable Data,
GeoPDF,
GeoTIFF,
Historical Topographic Maps, All tags...
Historical Topographic Maps 7.5 x 7.5 Minute Map Series,
Map,
Sheep Creek,
WY,
imageryBaseMapsEarthCover, Fewer tags
USGS Historical Quadrangle in GeoPDF.
Tags: 7.5 x 7.5 minute,
Downloadable Data,
GeoPDF,
GeoTIFF,
Historical Topographic Maps, All tags...
Historical Topographic Maps 7.5 x 7.5 Minute Map Series,
MT,
Map,
Sheep Creek,
imageryBaseMapsEarthCover, Fewer tags
USGS Historical Quadrangle in GeoPDF.
Tags: 7.5 x 7.5 minute,
Downloadable Data,
GeoPDF,
GeoTIFF,
Historical Topographic Maps, All tags...
Historical Topographic Maps 7.5 x 7.5 Minute Map Series,
MT,
Map,
Sheep Creek,
imageryBaseMapsEarthCover, Fewer tags
USGS Historical Quadrangle in GeoPDF.
Tags: 30 x 60 minute,
Downloadable Data,
GeoPDF,
GeoTIFF,
Historical Topographic Maps, All tags...
Historical Topographic Maps 30 x 60 Minute Map Series,
ID,
Map,
Sheep Creek,
imageryBaseMapsEarthCover, Fewer tags
USGS Historical Quadrangle in GeoPDF.
Tags: 7.5 x 7.5 minute,
Downloadable Data,
GeoPDF,
GeoTIFF,
Historical Topographic Maps, All tags...
Historical Topographic Maps 7.5 x 7.5 Minute Map Series,
ID,
Map,
Sheep Creek,
imageryBaseMapsEarthCover, Fewer tags
USGS Historical Quadrangle in GeoPDF.
Tags: 7.5 x 7.5 minute,
Downloadable Data,
GeoPDF,
GeoTIFF,
Historical Topographic Maps, All tags...
Historical Topographic Maps 7.5 x 7.5 Minute Map Series,
Map,
ND,
Sheep Creek,
imageryBaseMapsEarthCover, Fewer tags
40Ar/39Ar data from plutonic, dike, and alteration samples collected during geologic mapping of the eastern part of the Bonnifield mining district geologic map area in parts of Fairbanks A-1 and Fairbanks A-2 and Healy D-1 and Healy D-2 quadrangles yield results indicating the plutons, dikes, and a gold-bearing quartz vein in the Bonnifield Map area range from 85 to 95 m.y.
Tags: 40Ar/39Ar,
Age Dates,
Alaska Range,
Alaska, State of,
Buzby prospect, All tags...
Chute Creek,
Denali Borough,
Dry Creek,
Dry Creek placer mine,
Dry Creek prospect,
Fairbanks Quadrangle,
Forgotten Creek,
Geochronology,
Geology,
Glacier Creek,
Glory Creek,
Glory Creek prospect,
Healy Quadrangle,
Kansas Creek,
Kansas Creek prospect,
LEA Creek prospect,
Newman Creek,
Newman Creek placer mine,
Red Mountain Creek,
Red Mountain Creek prospect,
Rogers Creek,
STATEMAP Project,
Sheep Creek,
Slate Creek,
Slide Creek,
Smog prospect,
Snow Mountain Gulch,
Threemile Creek,
WTF (Western Tundra Flats) prospect,
West Fork Little Delta River,
Wood River,
geoscientificInformation, Fewer tags
Mineral-resources personnel from the Alaska Division of Geological & Geophysical Surveys carried out a geological field survey, including mapping and sampling in the eastern part of the Bonnifield mining district in the Fairbanks A-1, A-2, Healy D-1 and D-2 quadrangles, Alaska from June 16 to July 18, 2008. The fieldwork provides basic information critical to building an understanding of Alaska geology and is part of an integrated program of airborne geophysical surveys followed by geological mapping. During 2008, 242 rock samples were collected for geochemical trace-element analysis, 106 rock samples were collected for whole rock (major- and minor-oxide and petrogenetically important trace element) analyses, and...
Tags: Alaska Range,
Alaska, State of,
Buzby prospect,
Chute Creek,
Denali Borough, All tags...
Dry Creek,
Dry Creek placer mine,
Dry Creek prospect,
Fairbanks Quadrangle,
Forgotten Creek,
Geochemistry,
Glacier Creek,
Glory Creek,
Glory Creek prospect,
Healy Quadrangle,
Kansas Creek,
Kansas Creek prospect,
LEA Creek prospect,
Major Oxides,
Newman Creek,
Newman Creek placer mine,
Red Mountain Creek,
Red Mountain Creek prospect,
Rogers Creek,
STATEMAP Project,
Sheep Creek,
Slate Creek,
Slide Creek,
Smog prospect,
Snow Mountain Gulch,
Stream Sediments,
Threemile Creek,
Trace Metals,
WTF (Western Tundra Flats) prospect,
West Fork Little Delta River,
Wood River,
geoscientificInformation, Fewer tags
In this report, we evaluate potential tsunami hazards for the southeastern Alaska community of Juneau and numerically model the extent of inundation from tsunami waves generated by tectonic and submarine landslide sources. We calibrate our tsunami model by numerically simulating the 2011 Tohoku tsunami at Juneau and comparing our results to instrument records. Analysis of calculated and observed water level dynamics for the 2011 event in Juneau reveals that the model underestimates the observed wave heights in the city by a factor of two, likely due to complex tsunami-tide interactions. We compensate for this numerical underestimation by doubling the coseismic slip of the hypothetical tsunami sources in our models....
Tags: Bathymetry,
Berners Bay,
Coastal,
Douglas,
Douglas Island, All tags...
Eagle River,
Earthquake,
Engineering,
Environmental,
Faults,
Favorite Channel,
Flood,
Fritz Cove,
Geologic,
Geology,
Geotechnical,
Hazards,
Inundation,
Juneau,
Landslide,
Marine,
Mendenhall River,
Modeling,
Regional,
Rockfall,
Saginaw Channel,
Sediment,
Sedimentation,
Sheep Creek,
Slides,
Slope,
Slump,
Southeast Alaska,
Subduction,
Subsidence,
Surface,
Taku Inlet,
Tectonics,
Topography,
Tsunami,
Uplift,
Water,
geoscientificInformation, Fewer tags
The Strawberry Butte quadrangle, scale 1:24,000, is a legacy map of the U.S. Geological Survey, made as part of the Montana Investigations Project to provide information on the stratigraphy, structure, and geologic history of the area. The quadrangle encompasses an area of about 132 km2 (51 mi2) in the southwest part of the Little Belt Mountains and is about 26 km (17 mi) north of White Sulphur Springs, county seat of Meagher County, Montana. Two contrasting geologic terranes form the area. The northern two-thirds of the quadrangle are underlain by Paleoproterozoic metagranite that contains some inclusions of metadiorite and biotite gneiss. A veneer of Middle Cambrian sedimentary rocks, including the Flathead Sandstone...
Types: Citation;
Tags: Allan Creek,
Allan Park,
Belt Supergroup,
Black Butte,
Black Butte Creek, All tags...
Black Butte Creek fault zone,
Black Butte Creek metallic mineral deposits,
Cabin Creek,
Calf Creek,
Cambrian conglomerate,
Cambrian trace fossils,
Cenozoic basin deposits,
Cenozoic faulting,
Cenozoic unconformities,
Central Montana uplift,
Copper Creek,
Eagle Creek,
East Fork Calf Creek,
Eocene erosion,
Eocene plutonism,
Hematite alteration after sulfide mineralization,
Indian Creek,
Iron Butte iron deposit,
Iron-silicate gossan,
Laccolith,
Laccoliths, Little Belt Mountains,
Land Use Change,
Lewis and Clark National Forest,
Lewis and Clark tectonic zone,
Little Belt Mountains,
Little Belt Mountains uplift,
Little Moose Creek,
Little Sheep Creek,
Meagher County,
Mesoproterozoic sedimentary rocks,
Metallic mineral deposits, Little Belt Mountains,
Middle Fork Calf Creek,
Mineralogy,
Montana,
Moose Creek,
Moose Creek Campground,
Moose Pass,
Neoproterozoic-Middle Cambrian tectonism,
Oblique-slip faulting,
Oligocene basalt,
Oligocene volcanism,
Paleoproterozoic metamorphic rocks,
Pole Creek,
Pre-Flathead unconformity,
Recurrent faulting,
Sheep Creek,
Squaw Creek,
Strawberry Butte,
Strike-slip faulting,
Structural Geology,
USA,
USGS Science Data Catalog (SDC),
United States,
Volcano Valley fault zone,
West Fork Calf Creek,
Woods Mountain laccolith, Fewer tags
Mineral-resources personnel from the Alaska Division of Geological & Geophysical Surveys carried out a geological field survey, including mapping and sampling, in the eastern part of the Bonnifield mining district in the Fairbanks A-1 and A-2, and the Healy D-1 and D-2 quadrangles, Alaska, from June 16 through July 18, 2008. The fieldwork provides basic information critical to building an understanding of Alaska's geology and is part of an integrated program of airborne geophysical surveys followed by geological mapping. Specifically, this work provides geologic context for geophysical surveys conducted in 2006. To represent a typical lithology, igneous or possible meta-igneous samples were collected and analyzed...
Tags: Alaska Range,
Analyses,
Analyses and Sampling,
Analytical Lab Results,
Analytical Results, All tags...
Bedrock,
Bedrock Geology,
Chemistry,
Chute Creek,
Dry Creek,
Fairbanks Quadrangle,
Geochemical Data,
Geochemical Surveys,
Geochemistry,
Geologic,
Geology,
Healy Quadrangle,
Igneous,
Igneous Rocks,
Kansas Creek,
Lab Methods,
Metamorphic Rocks,
Methods,
Mineral Assessment,
Mineralogy,
Minerals,
Red Mountain Creek,
Resource Assessment,
Resource Information,
Resources,
Rocks,
Rogers Creek,
STATEMAP Project,
Sample Location,
Sheep Creek,
geoscientificInformation, Fewer tags
USGS Historical Quadrangle in GeoPDF.
Tags: 7.5 x 7.5 minute,
Downloadable Data,
GeoPDF,
GeoTIFF,
Historical Topographic Maps, All tags...
Historical Topographic Maps 7.5 x 7.5 Minute Map Series,
MT,
Map,
Sheep Creek,
imageryBaseMapsEarthCover, Fewer tags
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