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The Leadville North 7.5' quadrangle lies at the northern end of the Upper Arkansas Valley, where the Continental Divide at Tennessee Pass creates a low drainage divide between the Colorado and Arkansas River watersheds. In the eastern half of the quadrangle, the Paleozoic sedimentary section dips generally 20–30 degrees east. At Tennessee Pass and Missouri Hill, the core of the Sawatch anticlinorium is mapped as displaying a tight hanging-wall syncline and foot-wall anticline within the basement-cored structure. High-angle, west-dipping, Neogene normal faults cut the eastern margin of the broad, Sawatch anticlinorium. Minor displacements along high-angle, east- and west-dipping Laramide reverse faults occurred in...
Tags: 10Be, 26Al,
Belden Formation,
Buckeye Peak,
Bull Lake glaciation,
Camp Hale, All tags...
Chaffee Group,
Chicago Ridge,
Colorado,
Colorado River,
Cooper Hill,
Dotsero Formation,
Eagle County,
Eagle River,
East Fork Arkansas River,
Geomorphology,
Gray porphyry group,
Hornblende Latite Porphyry,
Lake County,
Laramide,
Leadville,
Leadville Limestone,
Leadville Quadrangle,
Lincoln Porphyry,
Manitou Dolomite,
Minturn Formation,
Missouri Hill,
Mosquito Range,
Mount Zion,
No Name Gulch,
Pinedale Glaciation,
Rio Grande rift,
Sawatch Quartzite,
Sawatch Range,
Sawatch anticlinorium,
South Park,
St. Kevin Granite,
Structural Geology,
Tennessee Creek,
Tennessee Park,
Tennessee Pass,
Turquoise Lake,
USA,
USGS Science Data Catalog (SDC),
United States,
Upper Arkansas River,
Upper Arkansas Valley,
White Porphyry Group,
cosmogenic nuclide,
neotectonics,
pre-Bull Lake glaciation, Fewer tags
Denali National Park and Preserve (DENA), located in central Alaska, is home to iconic and dynamic landscapes surrounding the tallest mountain range in North America, the Alaska Range. DENA preserves over 6 million acres of wild land that provides opportunities for recreation, subsistence hunting and gathering, preservation of cultural resources, and scientific research. Despite its size and popularity, DENA has only one road—the dead-end, 92-mile Denali National Park Road (hereafter referred to as the Park Road). The Park Road is mostly gravel; only the first 15 miles are paved. It is the only access for most DENA infrastructure, including visitor centers, staff facilities, campgrounds, and businesses. The Park...
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Alaska,
Alaska Range,
Browne glaciation,
Cantwell Basin,
Cantwell Formation, All tags...
Climatology,
Denali,
Denali National Park,
Denali National Park,
Denali Park Road,
Denali fault system,
Dry Creek glaciation,
East Fork Toklat River,
Eilson Visitor Center,
Fang Mountain,
Geography,
Geologic Map,
Geomorphology,
Glaciology,
Healy glaciation,
Highway Pass,
Hines Creek,
Hines Creek fault,
Kantishna Hills,
McKinley River,
Mount Galen,
Mount Healy,
Mount Margaret,
Mount Wright,
Muldrow glacier,
Nenana Gravel,
Nenana River,
Park Road fault,
Plains of Murie,
Polychrome Pass,
Pretty Rocks,
Quaternary deposits,
Riley Creek glaciation,
Sable Pass,
Sanctuary River,
Savage River,
Sedimentology,
Seismology,
Stony Pass,
Stratigraphy,
Structural Geology,
Surficial Geology,
Teklanika Formation,
Teklanika River,
Teklanika volcanics,
Toklat River,
USA,
USGS Science Data Catalog (SDC),
United States,
Usibelli Group,
Volcanology,
Wonder Lake,
landslides,
neotectonics,
permafrost, Fewer tags
The Homestake Reservoir 7.5' quadrangle lies at the northwestern end of the Upper Arkansas Valley, and headwaters of the Arkansas River, and the Roaring Fork, Fryingpan, and Eagle Rivers of the Colorado River system. The quadrangle lies within tectonic provinces of the 1.4 Ga Picuris Orogeny, the late Paleozoic Ancestral Rockies, Late Cretaceous-Paleocene Laramide orogeny, Oligocene to Miocene, and Pliocene?, volcanism, and Miocene to the present Rio Grande rift extensional tectonics. In the eastern half of the quadrangle, high-angle, east-dipping, Neogene normal faults displace Proterozoic rocks, and locally Mio-Pliocene? volcanic rocks. Many quartz veins and hydrothermally altered zones are exposed along the eastern...
Categories: Data;
Types: Downloadable,
GeoTIFF,
Map Service,
Raster;
Tags: 10Be, 26Al,
10th Mountain Division Hut,
Bald Eagle Mountain,
Bear Lake,
Brady Lake, All tags...
Bull Lake glaciation,
Busk Creek,
Camp Hale,
Carlton Tunnel,
Colorado,
Colorado River,
Eagle County,
Eagle River,
Economic Geology,
Galena Lake,
Galena Mountain,
Geomorphology,
Glaciology,
Hagerman Pass,
Hagerman Tunnel,
Homestake Creek,
Homestake Peak,
Homestake Reservoir,
Homestake shear zone,
Hydrology,
Isolation Lake,
Lake County,
Lake Esther,
Laramide,
Leadville,
Leadville Mining District,
Leadville Quadrangle,
Lincoln Porphyry,
Longs Gulch,
Mill Creek,
Mineral Resources,
Miocene volcanics,
Mount Massive Wilderness,
Mount of the Holy Cross Wilderness,
Oligocene volcanics,
Paradise Lakes,
Pinedale Glaciation,
Pitkin County,
Pliocene volcanics,
Porcupine Gulch,
Rio Grande rift,
San Isabel National Forest,
Sawatch Range,
Sawatch anticlinorium,
Slide Lake,
Soil Sciences,
Sopris Creek,
South Park,
St. Kevin Granite,
St. Kevin Mining District,
Structural Geology,
Tennessee Creek,
Tennessee Park,
Tennessee Pass,
Timberline Lake,
Turquoise Lake,
USA,
USGS Science Data Catalog (SDC),
Uncle Bud’s Cabin,
United States,
Upper Arkansas River,
Upper Arkansas Valley,
Water Resources,
White River National Forest,
cosmogenic nuclide,
landslides,
metalamprophyre,
neotectonics,
pre-Bull Lake glaciation,
pseudotachylite,
sakungen, Fewer tags
The Tyonek area in the northwestern Cook Inlet trough is rich in petroleum, coal, geothermal, aggregate, and timber resources, but the detailed geologic mapping necessary for planning future resource development exists only in part of the area. This report and geologic map provide basic surficial-geologic information useful for exploiting those resources and planning future utility corridor developments. In addition to mapping of surficial geologic units, we provide discussion of strategraphic evidence pertaining to physiographic relations and geologic history of volcaniclastic deposits derived from ancestral Mount Spurr, multiple phases of Quaternary glacial activity, Chakachatna River valley landslide complexes...
Tags: Alaska Earthquake 1964,
Alluvial Fan,
Beluga Plateau,
Beluga River,
Blockade Glacier, All tags...
Capps Glacier,
Chakachatna River,
Chakachatna-McArthur Embayment,
Chalcedony,
Chigmit Mountains,
Chuitna Coal Project,
Chuitna River,
Coastal Plain,
Colluvium,
Cook Inlet,
Cook Inlet Basin,
Correlation,
Debris Avalanche,
Depositional Environment,
Diamictons,
Earthquake Related Slope Failure,
Erratics,
Fault Displacement,
Glacial Geology,
Glacier Outburst Flood,
Glacioestuarine Deposits,
Jasper,
Jokulhlaup,
Lahar,
Landslide Deposit,
Little Ice Age,
Moraines,
Mount Spurr,
Neacola Mountains,
Neoglacial,
Neotectonics,
Penultimate Glaciation,
Radiocarbon Ages,
Rotational Landslide,
STATEMAP Project,
Sediment Gravity Flow,
Straight Creek,
Surface Fault Rupture,
Surficial Geologic Map,
Surficial Geology,
Susitna Lowland,
Tectonics,
Threemile Creek,
Till,
Tordrillo Mountains,
Tyonek,
Tyonek Quadrangle,
Volcaniclastic Deposits,
geoscientificInformation, Fewer tags
Staff from Alaska Earthquake Center, Geophysical Institute and Alaska Division of Geological & Geophysical Surveys evaluated potential potential tsunami hazard for the communities of Kodiak, Womens Bay, and for the U.S. Coast Guard base on Kodiak Island by numerically modeling the extent of inundation from tsunami waves generated by hypothetical earthquake sources. Worst-case hypothetical scenarios are defined by analyzing results of a sensitivity study of the tsunami dynamics related to various slip distributions along the Alaska-Aleutian megathrust. The worst-case scenarios for the Kodiak communities are thought to be the subduction zone earthquakes offshore Kodiak Island with their greatest slip at 5-35 km (3.1-22...
Tags: Active Fault,
Bathymetry,
Coastal,
Coastal and River,
Earthquake, All tags...
Emergency Preparedness,
Engineering,
Engineering Geology,
Environmental,
Fault Displacement,
Faulting,
Faults,
Flood,
Geologic,
Geologic Hazards,
Geology,
Hazards,
Inundation,
Kodiak,
Kodiak Island,
Kodiak Island Borough,
Kodiak Quadrangle,
Kodiak Station,
Land Subsidence,
Landslide,
Marine Geology,
Modeling,
Neotectonics,
Pillar Mountain,
Seismic Hazards,
Slope,
Subduction,
Subsidence,
Surface,
Tectonics,
Tides,
Topography,
Tsunami,
Water,
geoscientificInformation, Fewer tags
This geodatabase contains all of the map information used to publish the Surficial Geologic Map of the Owlshead Mountains 30’ X 60’ Quadrangle,Inyo and San Bernardino Counties, California: U.S. Geological Survey Scientific Investigations Map SIM-3496. The geodatabase and associated map delineate primarily surficial geology and neotectonics structure across the entire extent of this quadrangle, which includes 32 complete 7.5’ quadrangles located in the Owlshead Mountains, southern Death Valley, and adjoining basins and highlands in the southwestern section of Inyo County and the northeastern part of San Bernardino County in eastern California. The datasets contained in this Scientific Investigation Map describe the...
Tags: Avawatz Mountains,
Black Mountains,
California,
California Valley,
Chicago Valley, All tags...
Fort Irwin,
Geomorphology,
Greenwater Valley,
Owlshead Mountains,
Silurian Valley,
Soil Sciences,
Structural Geology,
Tecopa Basin,
USGS Science Data Catalog (SDC),
Valjean Valley,
blind thrust fault,
fault,
fault propagation fold,
folds,
geologic database,
geologic map,
neotectonics,
popup structure,
southern Death Valley,
strike-slip fault,
surficial geology,
thrust fault, Fewer tags
This 1:50,000-scale geologic map represents a compilation of the most recent geologic studies of the upper Arkansas River valley, between Leadville and Salida, Colorado. The valley is structurally controlled by an extensional fault system that forms part of the prominent northern Rio Grande rift, an intra-continental region of crustal extension. This work also incorporates new detailed geologic mapping of poorly understood areas within the map area and reinterprets previously studied areas, aided by lidar data that covers 59 percent of the map area. The mapped region extends into the Proterozoic metamorphic and intrusive rocks in the Sawatch Range west of the valley and the Mosquito Range to the east. Paleozoic...
Categories: Data;
Tags: 207Pb/206Pb zircon age,
40Ar/39Ar age,
Arkansas River,
Balltown,
Balltown placer gold mining areas, All tags...
Belle of Granite Mine,
Big Union Creek,
Bishop ash,
Black Cloud Mine,
Black Mountain,
Browns Canyon,
Browns Canyon fluorspar mining district,
Browns Creek,
Buckskin Gulch,
Buena Vista,
Buffalo Creek,
Buffalo Peaks,
Bull Lake glaciation,
Cache Creek,
California Gulch,
California Mine,
Centerville,
Chaffee County,
Chalk Creek,
Clear Creek,
Clear Creek Reservoir,
Colorado,
Cottonwood Creek,
Dry Union Gulch,
Eagle County,
Eagle River,
East Fork Arkansas River,
Eddy Creek,
Elephant Rock,
Fremont County,
Front Range,
Garfield,
Garfield Mine,
Garfield mining district,
Gordon Mine,
Granite,
Granite mining district,
Granite placer gold mining areas,
Hayden Gulch,
Homestake Reservoir,
Iowa Gulch,
Johnson Village,
Lake County,
Lake Creek,
Langhoff Gulch,
Lava Creek B ash,
Leadville,
Leadville mining district,
Lilly Mine,
London Mine,
Malta,
Maysville,
Mesozoic rocks,
Morrison Creek,
Mosquito Range,
Mount Aetna,
Mount Antero,
Mount Antero mining district,
Mount Princeton,
Mount Shavano,
Mount Yale,
Paleozoic rocks,
Park County,
Pine Creek,
Pinedale glaciation,
Pitkin County,
Poncha Springs,
Proterozoic rocks,
Quaternary deposits,
Rio Grande rift,
Riverside,
Rock Creek,
Ruby Mine,
Ruby Mountain,
San Juan Mountains,
Sangre de Cristo Range,
Sawatch Range,
Sedalia Mine,
Sedalia copper-zinc mining district,
South Arkansas River,
South Park,
South Platte River,
Squaw Creek,
St. Kevin mining district,
Structural Geology,
Sugar Loaf mining district,
Sugarloaf Mountain,
Tennessee Creek,
Tertiary rocks,
Triad Ridge,
Trout Creek,
Trout Creek Pass,
Trout Creek paleovalley,
Tumble Creek,
Turquoise Lake,
Twin Lakes Reservoir,
Twin Lakes mining district,
Two Bits mining district,
USA,
USGS Science Data Catalog (SDC),
United States,
Western Alma mining district,
Weston Pass,
Weston Pass mining district,
Yankee Blade Mine,
alluvial deposits,
alluvium,
andesite,
artificial-fill deposits,
augen gneiss,
basalt,
basin-fill deposits,
breccia,
colluvium,
copper,
cosmogenic surface-exposure age,
dacite,
debris flow,
debris-flow deposits,
diamicton,
diorite,
eolian deposits,
fan deposits,
fault,
faulting,
fluorspar,
fluvial deposits,
gabbro,
glacial deposits,
glacial flood deposits,
glacial flood gravel,
glaciofluvial deposits,
gneiss,
gold,
graben,
granite,
granitic gneiss,
granodiorite,
gravel,
hydrologic hazards,
hypabyssal rhyolite,
intrusive rock,
lahar deposit,
lamprophyre,
landslide deposits,
latite,
lava,
lead,
leucogranite,
leucogranite gneiss,
lidar imagery,
man-made deposits,
mass-movement deposits,
mass-movement hazards,
metabasalt,
metagabbro,
metaigneous rocks,
metasedimentary rocks,
metavolcanic rocks,
microtonalite,
mine,
mine-waste deposits,
mineral deposits,
mining district,
monzodiorite,
monzogranite,
monzonite,
mud-flow deposits,
neotectonics,
ore,
outwash,
outwash gravel,
peat deposits,
pegmatite,
periglacial,
placer gold,
placer-tailings deposits,
porphyry,
pre-Bull Lake glaciation,
quartz diorite,
quartz latite,
quartzite,
rhyodacite,
rhyolite,
rift,
rock-glacier deposits,
sackungen,
sand and gravel resources,
scarp,
schist,
sedimentary rocks,
seismic hazards,
silver,
smelter-slag deposits,
soil,
surficial deposits,
talus deposits,
till,
tuff,
volcanic ash,
volcanic breccia,
volcanic rock,
weathering,
wetland deposits,
zinc, Fewer tags
The San Luis Valley and associated underlying basin of south-central Colorado and north-central New Mexico is the largest structural and hydrologic basin of the Rio Grande Rift and fluvial system. The surrounding San Juan and Sangre de Cristo Mountains reveal evidence of widespread volcanism and transtensional tectonism beginning in the Oligocene and continuing to the present, as seen in fault displacement of Pleistocene to Holocene deposits along the eastern basin-bounding Sangre de Cristo fault system and fault zones along the western margin of the basin. The San Luis basin can generally be subdivided into northern and southern basins at the structural and physiographic high terrain of the San Luis Hills in the...
Tags: 3He cosmogenic nuclide,
Alamosa,
Alamosa County,
Alamosa River,
Bishop Tuff, All tags...
Blanca Peak,
Bull Lake glaciation,
Center,
Chiquita Peak,
Colorado,
Conejos County,
Conejos River,
Costilla County,
Crestone,
Custer County,
Del Norte,
Fort Garland,
Fremont County,
Geomorphology,
Glaciology,
Great Sand Dunes,
Greenie Ridge,
Hayden Pass,
Huckleberry Ridge Tuff,
La Jara Creek,
La Veta Pass,
Lake Alamosa,
Lava Creek B,
Medano Creek,
Medano Pass,
Mineral Hot Springs fault,
Miocene volcanics,
Moffet,
Monte Vista,
Mosca Pass,
Orient Iron Mine,
Pinedale Glaciation,
Pleistocene Glaciation,
Pleistocene river incision,
Pliocene volcanics,
Poncha Pass,
Rio Grande,
Rio Grande County,
Rio Grande incision,
Rio Grande rift,
Rocky Mountain glaciation,
Saguache,
Saguache County,
Saguache Creek,
San Juan Mountains,
San Juan volcanic field,
San Luis Creek,
San Luis Lakes,
San Luis Valley,
San Luis basin,
Sand Creek,
Sangre de Cristo Mountains,
Sangre de Cristo fault,
Sangre de Cristo fault system,
Santa Fe Group,
Servilleta Basalt,
Soil Sciences,
Structural Geology,
Taos Plateau volcanic field,
Terrace Reservoir,
Tusas Mountains,
USA,
USGS Science Data Catalog (SDC),
United States,
Valley View Hot Springs,
Villa Grove,
Villa Grove fault zone,
Zapata Creek,
Zapata Falls,
active fault,
landslides,
marine oxygen isotope stage 10,
marine oxygen isotope stage 11,
marine oxygen isotope stage 12,
marine oxygen isotope stage 2,
marine oxygen isotope stage 5,
marine oxygen isotope stage 6,
marine oxygen isotope stage 7,
marine oxygen isotope stage 8,
marine oxygen isotope stage 9,
marine-terrestrial marine isotope correlation,
middle Pleistocene glaciation,
neotectonics,
pre-Bull Lake glaciation,
soil carbonate, Fewer tags
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