Filters: Tags: Florence Bascom Geoscience Center (X) > partyWithName: Ryan J McAleer (X)

Filters Date Range Past year (3) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Gregory J Walsh Florence Bascom Geoscience Center U.S. Geological Survey - ScienceBase Core Science Systems U.S. Geological Survey More... Categories Data (5) Tag Types Theme (5) Place (5) USGS Scientific Topic Keyword (5) Harvest Set (5) Tag Schemes None (5) ISO 19115 Topic Category (5) View Results as: JSON ATOM CSV

40Ar/39Ar data from the Janub Metamorphic Complex, Southern Jordan This data release includes 40Ar/39Ar collected at the U.S. Geological Survey for samples from the Janub Metamorphic Complex in Southern Jordan. Rock samples were collected by Hind Ghanem of the University of Jordan. Muscovite-rich microcores were drilled from a polished thick section of a deformed granitoid and analyzed by argon geochronology at the U.S. Geological Survey Bascom ARgon Dating (BARD) Laboratory in Reston, Virginia. The 40Ar/39Ar data constrain the timing of formation of the foliation defined by muscovite. Categories: Data; Tags: 40Ar/39Ar, Arabian Shield, Bascom Argon Dating Laboratory, FBGC, Florence Bascom Geoscience Center, All tags... Geochemistry, Geochronology, Jordan, Structural Geology, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), geoscientificInformation, Fewer tags Whole rock geochemistry data from the Ordovician Bronson Hill arc and Silurian and Devonian Connecticut Valley - Gaspé trough, Vermont and New Hampshire This data release includes whole rock (WR) geochemical data for 94 samples. Whole rock geochemistry data were analyzed at Actlabs in Ancaster, Ontario, Canada. Rock samples were collected by Peter Valley, Greg Walsh, Arthur Merschat, and Ryan McAleer. The whole rock geochemistry data characterize the composition of mapped meta-igneous rocks in eastern Vermont and western New Hampshire, USA. The data release contains three files, including one metadata file and 2 comma-delimited (CSV) files. The CSV files include the following: BronsonHill_WR_data.csv and BronsonHill_WR_data_dictionary.csv. Categories: Data; Tags: Bronson Hill arc, Connecticut Valley - Gaspé trough, FBGC, Florence Bascom Geoscience Center, Geochemistry, All tags... Geochemistry, NGCMP, National Cooperative Geologic Mapping Program, New Hampshire, Ordovician, Silurian, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Vermont, biota, Fewer tags Whole rock geochemistry and uranium-lead isotopic data from Mesoproterozoic rocks in the Eagle Lake quadrangle, Essex County, New York This data release includes whole rock (WR) geochemical data, and uranium-lead isotopic data collected using a sensitive high resolution ion microprobe-reverse geometry (SHRIMP-RG) instrument; the SHRIMP-RG is a type of secondary ion mass spectrometer (SIMS). Whole rock geochemistry data were analyzed at Bureau Veritas Commodities Canada Ltd. Laboratories in Vancouver, British Columbia, Canada. SHRIMP-RG data were collected at the USGS-Stanford University SHRIMP-RG in Palo Alto, California, USA. Rock samples for all methods were collected by Phillip Geer, Sean Regan, and Greg Walsh. SHRIMP-RG sample preparation and analyses were conducted by Ryan McAleer. The whole rock geochemistry and uranium-lead (U-Pb) isotopic... Categories: Data; Tags: Adirondack Mountains, Crown Point, Eagle Lake, Essex County, FBGC, All tags... Florence Bascom Geoscience Center, Geochemistry, Geochemistry, Geochronology, Hammondville, NGCMP, National Cooperative Geologic Mapping Program, New York, SHRIMP-RG, Ticonderoga, U.S. Geological Survey, U/Pb, USGS, USGS Science Data Catalog (SDC), biota, Fewer tags Whole Rock Geochemistry and Uranium Lead Isotopic Data from the Dinwiddie Terrane, Virginia, USA This data release includes whole rock geochemical data, and uranium-lead isotopic data collected by both Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) and Sensitive High Resolution Ion Microprobe-Reverse Geometry (SHRIMP-RG) methods. Whole rock geochemistry was collected by Activation Laboratories in Ancaster, Ontario. LA-ICP-MS data was collected at the PLASMA at the USGS in Denver, Colorado. SHRIMP-RG data was collected at the USGS-Stanford SHRIMP-RG in Palo Alto, California. Rock samples for all methods were collected by Mark Carter of the USGS. The whole rock geochemistry and uranium lead isotopic data constrain the age and origin of rocks in the newly defined Dinwiddie Terrane of eastern... Categories: Data; Tags: FBGC, Florence Bascom Geoscience Center, Geochemistry, Geochemistry, Geochronology, All tags... James River, LA-ICP-MS, Mineral Resources, NGCMP, National Cooperative Geologic Mapping Program, Piedmont, Piedmont, Richmond, SHRIMP-RG, Structural Geology, U.S. Geological Survey, U/Pb, USGS, USGS Science Data Catalog (SDC), Virginia, biota, Fewer tags 238U/206Pb SHRIMP, 40Ar/39Ar geochronologic, and geochemical data from the Central Virginia Piedmont The Central Virginia Seismic Zone (CVSZ) is an area of historically increased earthquake activity that is of particular importance due to its proximity to many well-populated regions in the Virginia Piedmont. Notably, the epicentral region of the 2011 magnitude (M)5.8 earthquake in Mineral, Virginia falls within the CVSZ (Horton and Williams, 2012), making this region relevant not just historically, but also in more recent times. Thus, the U.S. Geological Survey is focusing on detailed bedrock mapping of the central Virginia Piedmont to better understand bedrock and fault geometry, fault history, and seismic risk potential. Though the central Virginia Piedmont has been mapped to some extent in previous studies (Hopkins,... Categories: Data; Tags: 40Ar/39Ar, Bascom Argon Dating Lab, CVSZ, Central Virginia Piedmont, Central Virginia Seismic Zone, All tags... FBGC, Florence Bascom Geoscience Center, Geochronology, SHRIMP, Stratigraphy, Structural Geology, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), geoscientificInformation, zircon U-Pb, Fewer tags