Filters: Tags: Mineral Resource Program (X) > partyWithName: Leah E Morgan (X)

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Argon data for HD-B1 intercalibration This data release includes 40Ar/39Ar intercalibration data from the U.S. Geological Survey for neutron fluence monitors HD-B1 (Heidelberg biotite) and FCs (Fish Canyon sanidine). Potassium-bearing mineral grains were analyzed by argon geochronology at the U.S. Geological Survey Argon Geochronology Laboratory in Denver, Colorado. These data provide intercalibration information between the two fluence monitors. Categories: Data; Tags: 40Ar/39Ar, <1GB, Argon Geochronology Laboratory, Colorado, Denver, All tags... GGGSC, Geology, Geophysics, and Geochemistry Science Center, Lakewood, MRP, Mineral Resource Program, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States, biota, geochronology, intercalibration, Fewer tags Argon data for enriched MORB from the 8°20' N seamount chain This dataset accompanies planned publication 'Near-Ridge Magmatism Constrained Using 40Ar/39Ar Dating of Enriched MORB from the 8°20' N Seamount Chain'. The Ar/Ar data are for samples that record the volcanic history of the area. The geochronology provides time constraints for the eruption of rocks studied in the manuscript. Samples were collected from the 8°20' N seamount chain by Molly Anderson (University of Florida), who sent them to the USGS Denver Argon Geochronology Laboratory for Ar/Ar analysis. Categories: Data; Tags: "Marine Geology"], "Volcanology", East Pacific Rise, GGGSC, Geology, Geophysics, and Geochemistry Science Center, All tags... MRP, Mineral Resource Program, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), ["Geochemistry", geochronology, geoscientificInformation, Fewer tags Argon data for Santa Cruz Basin, Arizona (ver. 1.1, November 2022) This data release includes 40Ar/39Ar data from the U.S. Geological Survey for samples from the Santa Cruz Basin, Arizona. Mineral samples were collected by Kenzie Turner and William Page from the upper Santa Cruz Basin, Arizona. Potassium-bearing mineral grains were separated from the bulk sample and analyzed by argon geochronology at the U.S. Geological Survey Argon Geochronology Laboratory in Denver, Colorado. The data provide age constraints on units in the relevant geologic mapping area. Categories: Data, Data Release - Revised; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 40Ar/39Ar, Argon Geochronology Laboratory, Arizona, GGGSC, Geochemistry, All tags... Geology, Geophysics, and Geochemistry Science Center, MRP, Mineral Resource Program, Stratigraphy, Structural Geology, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Volcanology, geologic mapping, geoscientificInformation, Fewer tags Argon data for Hugub Area, Kesem-Kebena-Dulecha, Ethiopia Tephra samples were collected by Leah Morgan (now at the U.S. Geological Survey (USGS)) from the Hugub Area, Kesem-Kebena-Dulecha, Afar, Ethiopia. Sanidine grains were separated from the bulk sample and analyzed by argon geochronology at the Scottish Universities Environmental Research Centre, Scotland. The data indicate that the age of the Hugub Bed, which is rich in archarological artifacts, is ca. 500 ka. These results have broad implications in understanding late Acheulean archaeology in Ethiopia. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 40Ar/39Ar, Afar, Argon Geochronology Laboratory, Awash River, East African Rift Valley, All tags... Ethiopia, GGGSC, Geochemistry, Geology, Geophysics, and Geochemistry Science Center, Kesem-Kebena-Dulecha, MRP, Mineral Resource Program, Stratigraphy, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Volcanology, archeology, biota, geoscientificInformation, Fewer tags