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Bedrock geologic map of the Livengood SW C-3 and SE C-4 quadrangles, Tolovana mining district, Alaska recent views
State of Alaska —
The Preliminary Interpretive Report 2004-3B, "Bedrock geologic map of the Livengood SW C-3 and SE C-4 quadrangles, Tolovana mining district, Alaska," is the bedrock... -
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Geologic map of Okmok Volcano recent views
State of Alaska —
Geologic map of Okmok Volcano, Report of Investigation 2023-1, shows the distribution of historic, Holocene, and late Pleistocene volcanic rocks and deposits related... -
State
Zircon U-Pb and 40Ar/39Ar results from dikes collected within the Bruin Bay fault zone, lower Cook Inlet recent views
State of Alaska —
This data release presents zircon U-Pb LA-ICP-MS geochronology from igneous rocks exposed in a coastal exposure at Ursus Head, Iliamna C-2 Quadrangle. Sills and dikes... -
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Source compositions of large tephra-production eruptions in Alaska recent views
State of Alaska —
Source compositions of large tephra-production eruptions in Alaska, Raw Data File 2023-26, provides new in situ geochemical analyses from previously collected samples... -
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40Ar/39Ar ages of rocks collected from the Passage Canal area, Seward D-7 Quadrangle, Alaska recent views
State of Alaska —
This report presents 40Ar/39Ar step-heating geochronology results from a single outcrop of a mineralized near-trench intrusion exposed in a road cut near Whittier,... -
State
40Ar/39Ar data from the eastern Moran area, Tanana B-6 and C-6 quadrangles, and the Ruby mining district, Ruby B-5 and B-6 quadrangles, Alaska recent views
State of Alaska —
This report presents 40Ar/39Ar step-heating geochronology results for igneous and metamorphic rocks from the eastern Moran area. Field samples were collected by the... -
State
Geospatial distribution of tephra fall in Alaska: a geodatabase compilation of published tephra fall occurrences from the Pleistocene to the present recent views
State of Alaska —
Tephra fall (volcanic ash) studies are a key component to understanding the frequency and magnitude of volcanic eruptions and conducting volcano-hazard assessments.... -
State
Bedrock geologic map of the Eagle A-1 Quadrangle, Fortymile mining district recent views
State of Alaska —
Geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) conducted field investigations and geochemical rock sampling during the 1999, 2000,... -
State
Geologic map of portions of the Livengood B-3, B-4, C-3, and C-4 quadrangles, Tolovana mining district, Alaska recent views
State of Alaska —
Geologic map of portions of the Livengood B-3, B-4, C-3, and C-4 quadrangles, Tolovana mining district, Alaska, Report of Investigation 2016-5, presents a geologic... -
State
Bedrock geologic map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska recent views
State of Alaska —
Preliminary Interpretive Report PIR 2001-3B, Bedrock geologic map of the Eagle A-2 Quadrangle, Fortymile mining district, provides 1:63,360-scale geologic mapping of... -
State
Zircon U-Pb and 40Ar/39Ar results from dikes collected within the Bruin Bay fault zone, lower Cook Inlet recent views
State of Alaska —
This data release presents 40Ar/39Ar step-heating geochronology results from rocks collected roughly 7 km southwest of Contact Point, Iliamna B-3 Quadrangle. Samples... -
State
U-Pb zircon data and ages for bedrock samples from the Richardson mining district, Big Delta Quadrangle, Alaska recent views
State of Alaska —
During the 2017 and 2018 field seasons, geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) conducted geologic mapping and sampling in... -
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Geologic Database of Information on Volcanoes in Alaska (GeoDIVA) recent views
State of Alaska —
Geologic Database of Information on Volcanoes in Alaska (GeoDIVA), Digital Data Series 20, is the enterprize database that serves as the back-end to AVO's public and... -
State
Data tables related to geology and gold mineralization in the Richardson district, east-central Alaska recent views
State of Alaska —
This report describes the results of geologic mapping and sample analysis from the Richardson district, east-central Alaska. -
State
40Ar/39Ar and U-Pb geochronology of Cretaceous-Paleocene igneous rocks and Cenozoic strata of northwestern Cook Inlet, Alaska: Linkages between arc magmatism, cooling, faulting, and forearc subsidence recent views
State of Alaska —
DGGS Professional Report 125, 40Ar/39Ar and U-Pb geochronology of Cretaceous-Paleocene igneous rocks and Cenozoic strata of northwestern Cook Inlet, Alaska: Linkages... -
State
U-Pb zircon ages from bedrock samples collected in the Tanacross and Nabesna quadrangles, eastern Alaska recent views
State of Alaska —
This Alaska Division of Geological & Geophysical Surveys (DGGS) Preliminary Interpretive Report presents uranium-lead (U-Pb) ages of zircons from 37 igneous and... -
State
40Ar/39Ar data, Styx River map area, Lime Hills C-1 Quadrangle, Alaska recent views
State of Alaska —
This DGGS Raw Data File presents 40Ar/39Ar age dating results for selected igneous rocks encountered in the Styx River area of the western Alaska Range.... -
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Geologic map of portions of the Livengood B-3, B-4, C-3, and C-4 quadrangles, Tolovana mining district, Alaska recent views
State of Alaska —
This data file presents 40Ar/39Ar step-heating geochronology results for a granite sample from the Livengood mining district. The Livengood area is a historically... -
State
40Ar/39Ar data from the Tanacross D-1 and parts of the D-2, C-1, and C-2 quadrangles, Alaska recent views
State of Alaska —
This report presents 40Ar/39Ar step-heating geochronology results for igneous and metamorphic rocks from the Alaska Division of Geological & Geophysical Surveys'... -
State
Geologic map of Mount Chiginagak volcano, Alaska: Whole-rock geochemistry and 40Ar/39Ar geochronology data recent views
State of Alaska —
Mount Chiginagak is a hydrothermally active volcano on the Alaska Peninsula, approximately 170 km south-southwest of King Salmon, Alaska. This small stratovolcano,...