Filters: Tags: Geochronology (X) > Categories: Physical Item (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions NGGDPP Collection (1) Types Collection (1) Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) OGC WMS Service (1) Contacts Alaska Division of Geological & Geophysical Surveys Categories Data (1) Tag Types Other (1) Tag Schemes https://www.sciencebase.gov/vocab/category/NGGDPP/NGGDPPCollectionTheme (1) View Results as: JSON ATOM CSV

Collection of radiometric age data from Alaska This collection consists of samples with age data and associated information for available radiometric dates for rocks and minerals in Alaska. The sample records and their associated publications were loaded into the Alaska Division of Geological and Geophysical Surveys division-wide database. A legacy Microsoft Access database exists that includes dates for all available U-Pb, K-Ar, 40Ar/39Ar, and Rb-Sr data for Alaska through 2007. Previous compilations by Wilson and others (1990) and U.S. Geological Survey (1999) provided the initial source of age data. Additional radiometric dates were compiled from both published and unpublished sources. This legacy project added essential basic supporting information that... Categories: Data, Physical Item; Types: Collection, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geochronology, Geological Collection, age dates, analysis