Maps Showing Inundation Depths, Ice-Rafted Erratics, and Sedimentary Facies of Late Pleistocene Missoula Flood in the Willamette Valley, Oregon

This digital dataset, compiled from previously published andunpublished data sources, contains a personal geodatabase andraster data of features related to the repeated inundation of theWillamette Valley and Portland basin by Missoula Flood waters inLate Pleistocene time. The feature classes contained within theWill_Valley geodatabase are called 'erratics', representing thelocations of ice-rafted erratics; 'contours', representinginundation levels associated with stratigraphic evidence ofrepeated floodings; and 'geology', representing the generaldistribution of Missoula Flood deposits. A stand-alone tablewithin the geodatabase contains geologic unit descriptions forthe geology polygons contained in the 'geology'...

Tags: 41003 = Benton, 41005 = Clackamas, 41009 = Columbia, 41043 = Linn, 41047 = Marion, All tags... 41051 = Multnomah, 41053 = Polk, 41067 = Washington, 41071 = Yamhill, 53011 = Clark, Calapooia River, Cascade Range, Chehalem Mountains, Clackamas River, Coast Fork River, Columbia River, Columbia River Basalt Group, Corvallis, Oregon, Eugene, Oregon, Lake Missoula, McKenzie River, Middle Fork River, Missoula Floods, Oregon Coast Range, Pleistocene, Portland Delta, Portland, Oregon, Salem Hills, Salem, Oregon, Tualatin Mountains, Tualatin River, Willamette Meteorite, Willamette River, Willamette Valley, Oregon, erratics, flood deposits, flood rhythmites, flooding, geologic history, geology, geology, geoscientificInformation, geospatial datasets, scabland, surficial geologic units, unconcolidated deposits, Fewer tags

Surficial geology of the Dalton Highway (Itkillik-Sagavanirktok rivers) area, southern Arctic foothills, Alaska

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

Surficial geology of the Tyonek area, south-central Tyonek Quadrangle, Alaska

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

Surficial-geologic map, Alaska Highway corridor, Delta Junction to Dot Lake, Alaska

During 2006 and 2007 the Alaska Division of Geological & Geophysical Surveys conducted reconnaissance surficial-geologic mapping in segment 1 of the Alaska Highway corridor, which straddles the Alaska Highway through the Tanana River valley from Delta Junction to the eastern boundary of the Mt. Hayes Quadrangle. Surficial-geologic deposits were initially mapped by interpreting ~1:63,360-scale, false-color infrared aerial photographs taken in August 1980 and field verified in 2006-2007.

Tags: Age Dates, Alaska Highway Corridor, Alluvial Deposits, Alluvial Fan, Alluvium, All tags... Big Delta, Big Delta Quadrangle, C14, Colluvial Deposits, Colluvium, Delta Junction, Delta River, Depositional Environment, Dot Lake, Dunes, Eolian, Erosion, Erratics, Esker, Faults, Floodplain, Floods, Gasline, Geologic Hazards, Geologic Map, Geologic Materials, Geomorphology, Glacial Deposits, Glacial Drift, Glacial Geology, Glacial Hazards, Glacial Lake, Glacial Processes, Gravel, Ice Contact Deposits, Jokulhlaups, Lake George, Lake Level, Landslide, Measured Sections, Mount Hayes Quadrangle, Outburst Floods, Outwash, Paleoenvironment, Paleosols, Paludal, Peat, Permafrost, Proposed Natural Gas Pipeline, Radiocarbon Dating, Rock Glaciers, Sand, Soil, Soils, Surficial, Surficial Geology, Talus, Tanana River, Terrace, Thaw Lakes, Transportation Corridor, Unconsolidated Deposits, Water Table, Fewer tags