Filters: Tags: Metavolcanic rocks (X) > partyWithName: Twelker, Evan (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Alaska Division of Geological & Geophysical Surveys Sicard, K.R. Wypych, Alicja Freeman, L.K. Gillis, R.J. More... Tag Types Theme (3) Place (3) Tag Schemes Alaska Division of Geological & Geophysical Surveys (3) ISO 19115 Topic Category (3) View Results as: JSON ATOM CSV

U-Pb zircon age data from meta-igneous rocks in the Clearwater Mountains, Mount Hayes A-6 Quadrangle, Alaska We report U-Pb zircon geochronology results for one metavolcanic and one metaplutonic rock sample from the Mount Hayes A-6 Quadrangle of central Alaska. These samples are representative of rock units assigned to the Clearwater terrane of Jones and others (1987), a sequence of greenschist-grade metavolcanic and metasedimentary rocks of poorly constrained age and tectonic origin. Our results indicate a crystallization age of 277.33 +/- 11.84 Ma for a felsic metavolcanic rock, and a 268.05 +/- 11.64 Ma crystallization age for a granitic metaplutonic unit intruding the former. Tags: Age Dates, Analyses, Analyses and Sampling, Analytical Lab Results, Bedrock, All tags... Bedrock Geology, Geochronology, Geology, Lab Methods, Metamorphic Rocks, Metavolcanic rocks, Mount Hayes Quadrangle, Orthogneiss, Sample Location, U-Pb, Zircon, geoscientificInformation, Fewer tags Major-oxide and trace-element geochemical data from rocks collected in 2015 in the Tok area, Tanacross A-5, A-6, and parts of adjacent quadrangles, Alaska The Tok project area is adjacent to the Delta mineral belt volcanogenic massive-sulfide (VMS) district, the Peak gold-silver-copper skarn, and structurally controlled gold and antimony mineralization in the Stibnite Creek and White Gold areas. The project area also includes the Noah prospect, an intrusion-related copper prospect. Whereas the Delta mineral belt has been extensively mapped and explored, the detailed mapping does not continue into the 2015 Tok project area. In this area, only reconnaissance mapping has been conducted. The combination of a lack of detailed mapping, the industry interest in the adjacent areas, and the geophysical data findings prompted the Alaska Division of Geological & Geophysical... Tags: Analyses, Analyses and Sampling, Analytical Lab Results, Analytical Results, Antimony, All tags... Arsenic, Bedrock Geologic Map, Chemistry, Geochemical Data, Geochemical Surveys, Geochemistry, Gold, Gold Prospect, Lab Methods, Major Oxides, Massive Sulfide Deposit, Massive Sulfide Occurrence, Massive Sulfide Prospect, Massive Sulfides, Metallogenesis, Metamorphic, Metamorphic Deposit, Metamorphic Rocks, Metasedimentary Rocks, Metavolcanic rocks, Minor Oxides, Plutonic Hosted, Polymetallic Vein, Porphyry, Skarn, Tanacross Quadrangle, Tok, Trace Elements, Trace Geochemical, Vein Deposit, Volcanogenic Massive Sulfide, geoscientificInformation, Fewer tags Major-oxide and trace-element geochemical data from rocks collected in the Tok River area, Tanacross A-5 and A-6 quadrangles, Alaska in 2016 Geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) and University of Alaska carried out a two-part geologic mapping and geochemical sampling project in the Tok River area of the Tanacross A-5 and A-6 quadrangles (June 12-26 and July 8-26). The Tok River area is adjacent to the Delta mineral belt volcanogenic massive-sulfide (VMS) district, the Peak gold-silver-copper skarn, and the structurally controlled gold and antimony mineralization in the Stibnite Creek and White Gold areas. The Tok River project area includes the Noah (also called Hona) prospect, an intrusion-related copper prospect. The combination of insufficient detailed geologic mapping, historical and current industry interest... Tags: Analyses, Analyses and Sampling, Analytic Signal, Analytical Lab Results, Analytical Results, All tags... Antimony, Arsenic, Bedrock, Chemistry, Dall Prospect, Eagle Prospect, Geochemical Data, Geochemical Surveys, Geochemistry, Gold, Gold Prospect, Jacqueline Prospect, Lab Methods, Major Oxides, Massive Sulfide Deposit, Massive Sulfide Occurrence, Massive Sulfide Prospect, Massive Sulfides, Metallogenesis, Metals, Metamorphic Rocks, Metasedimentary Rocks, Metavolcanic rocks, Mineral Assessment, Mineral Localities, Mineral Prospect, Minor Oxides, Noah Prospect, Parton Prospect, Shalosky Prospect, Tanacross Quadrangle, Tok, Tok Mining District, Tok River, Trace Elements, Trace Geochemical, Volcanogenic Massive Sulfide, geoscientificInformation, Fewer tags