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Filters Date Range Past year (3) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts U.S. Geological Survey - ScienceBase Energy and Minerals U.S. Geological Survey U.S. Geological Survey Celestine N Mercer More... Categories Collection (1) Data Release - Revised (1) Tag Types Theme (7) Place (7) theme (1) place (1) USGS Scientific Topic Keyword (6) Temporal (1) Harvest Set (7) More... Tag Schemes USGS Thesaurus (6) none (2) None (2) Geographic Names Information System (GNIS) (2) ISO 19115 Topic Category (6) Common Geographic Areas (4) Common geographic areas (1) More... View Results as: JSON ATOM CSV

Data to accompany U.S. Geological Survey Data Series 1099: Petrographic, geochemical and geochronologic data for Cenozoic volcanic rocks of the Tonopah, Divide, and Goldfield Mining Districts, Nevada This dataset is the assembled analytical results of geochemical, petrographic, and geochronologic data for samples, principally those of unmineralized Tertiary volcanic rocks, from the Tonopah, Divide, and Goldfield mining districts of west-central Nevada. Much of the data presented here for the Tonopah and Divide districts are for samples collected by Bonham and Garside (1979) during geologic mapping in and around those districts, whereas much of that for samples from the Goldfield district were obtained by Ashley (1974; 1979; 1990). Additional data were derived from samples collected between 2012–2017, as part of the U.S. Geological Survey Mineral Resources Program funded project titled: “Magmatic-tectonic history... Categories: Data; Tags: Ar, Divide mining district, Economic Geology, Esmeralda County, Fraction Tuff, All tags... GGGSC, Geochemistry, Geology, Geophysics, and Geochemistry Science Center, Goldfield mining district, Heller Tuff, ICP–AES, ICP–MS, LA-ICPMS, MRP, Mineral Resources, Mineral Resources Program, Nevada, New Mexico Geochronology Research Center, Nye County, Pb, SHRIMP-RG, Sensitive High Resolution Ion Microprobe with Reverse-Geometry, Siebert Tuff, Tonopah mining district, U, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Walker Lane geologic province, argon, geochemistry, geochronology, geoscientificInformation, inductively coupled plasma—atomic emission spectrometry, inductively coupled plasma—mass spectrometry, laser ablation inductively coupled plasma—mass spectrometry, lead, petrography, precious metal deposits, uranium, volcanic rocks, wavelength dispersive X-ray fluorescence spectrometry, Fewer tags Microfossil, grain size, and petrographic data for the Cabin Branch and Cabin Creek (Cappy Avenue) outcrops, Prince George's County, Maryland The Cabin Branch and Cabin Creek (Cappy Avenue) outcrops are located along two small creeks in Prince George’s County, Maryland. The Cabin Branch outcrop contains exposures of silty sands of the Upper Cretaceous Severn Formation, and both outcrops contain Paleocene silty quartz and glauconitic sands of the Danian Brightseat Formation and highly fossiliferous glauconitic quartz sands of the Selandian Aquia Formation. Data from these two locations were generated in order to designate a Principal Reference Section for the Danian age Brightseat Formation. The Cabin Branch outcrop consists of disjunct exposures along an approximately 0.4-mile section of the creek. At the nearby Cabin Creek (Cappy Avenue) outcrop a more... Categories: Data; Tags: Aquia Formation, Brightseat Formation, Cenozoic, Cretaceous, Danian, All tags... Maastrichtian, Maryland, Mesozoic, Mid-Atlantic Coastal Plain, Paleocene, Paleogene, Prince George's, Salisbury Embayment, Sedimentology, Selandian, Severn Formation, Stratigraphy, Tertiary, Thanetian, USGS Science Data Catalog (SDC), biostratigraphy, biota, calcareous nannoplankton, coastal zones, continental margins, faunal and floral census (microscopic), foraminiferans, fossils, geoscientificInformation, lithostratigraphy, micropaleontology, ostracodes, petrography, protists, sediment, sediment analysis, sediment deposition, sedimentology, stratigraphic sections, stratigraphic thickness, Fewer tags Enhanced wildfire at the Frasnian-Famennian boundary and its implications for O2 level and F-F mass extinction: evidence from organic petrology and Os isotope stratigraphy In this study, organic petrology and Osmium isotope (187Os/188Os) stratigraphy, major and trace element, and programmed pyrolysis analysis were performed on five outcrop samples from western New York, USA. Seawater Os isotope composition is controlled by radiogenic input from weathering of the ancient land and nonradiogenic input from extraterrestrial and hydrothermal sources (Peucker-Ehrenbrink and Ravizza, 2000). Os is complexed by the organic matter present at the time of deposition without isotope fractionation. Seawater Os isotope composition is reconstructed by analysing the Os isotope composition of the organic-rich sedimentary rock (Turgeon et al., 2007). The short residence time of Os (10 – 50 kyrs) in... Categories: Data; Tags: Cattaraugus County, Chautauqua County, Energy Resources, Erie County, Frasnian-Famennian mass extinction, All tags... New York State, Petrography, Re-Os enrichmement, USGS Science Data Catalog (SDC), fractionation, inertinite, isotopic analysis, osmium, wildfire, Fewer tags High Microscale Variability in Raman Thermal Maturity Estimates from Shale Organic Matter - Data Release Here the spatial variation in Raman estimates of thermal maturity within individual organic domains from several shale geologic reference materials originating from the Boquillas, Marcellus, Niobrara, and Woodford Formations are assessed from the respective Raman response. We show that for all four shales the thermal maturity parameters extracted from Raman spectra by iterative peak fitting can vary widely across distances of ≤5 µm within the same organic domain. Categories: Data; Tags: CEMEX quarry, Carter County, Oklahoma, Del Rio, Val Verde County, Texas, Energy Resources, Geochemistry, All tags... Le Roy, Genesse County, New York, Raman spectroscopy, USGS Science Data Catalog (SDC), geochemistry, laboratory methods, microscopy, organic matter, petrography, petroleum source rocks, shale, thermal maturity, vibrational spectroscopy, Fewer tags Melt inclusion and mineral geochemical analyses supporting the evaluation of petrogenesis, degassing, and metallogenic potential of mid-Cenozoic rhyolite magmas in northern Nevada, USA This data release presents geochemical analyses of silicate melt inclusions, host quartz phenocrysts, and biotite phenocrysts in samples collected by the U.S. Geological Survey (USGS) from mid-Cenozoic rhyolitic rocks from northern Nevada. Igneous intrusions and volcanic rocks in this study encompass nineteen rhyolitic samples from five magmatic centers across northeastern Nevada. Rhyolites were emplaced throughout northeastern Nevada over about an 8 million year timespan (41–33 mega-annum) in a variety of eruptive styles and volumes, ranging from meter-wide dikes to caldera-forming ignimbrites, and were roughly contemporaneous with regional ore deposition. Samples were prepared for petrographic and scanning electron... Categories: Data; Tags: Bald Mountain, Beast pit, Blue Star Mine, Caetano Caldera, Carico Lake Valley, All tags... Carlin-type gold, Copper Canyon, Cortez Hills pit, EMP, Economic Geology, Electron microprobe, Elko County, Eureka, Eureka County, FTIR, Fish Creek Range, Fourier transform infrared spectroscopy, GGGSC, Genesis pit, Geology, Geophysics, and Geochemistry Science Center, LA-ICP-MS, Lander County, Laser-ablation inductively coupled plasma mass spectrometry, MRP, Magmas to Metals project, Maverick Springs Range, Mineral Resources, Mineral Resources Program, Mount Tenabo, Nanny Creek, Nevada, Pequop Mountains, Rocky Pass, SEM, SHRIMP-RG, Scanning electron microscope, Sensitive high-resolution ion microprobe-reverse geometry, Shoshone Range, Target Hill, Toiyabe Range, Tuscarora Mountains, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States, Volcanology, White Pine County, chemical analysis, economy, geoscientificInformation, igneous rocks, magma plumbing system, magmatic volatiles, melt inclusions, metallogenic potential, mineral resources, ore deposits, petrography, porphyry deposit, rare earth elements, rhyolite, rocks and deposits, thermobarometry, Fewer tags United States Gulf Coast Basin Curated Wells and Logs Database (ver. 2.0, November 2023) The United States Gulf Coast Basin Curated Wells and Logs Database (CWLDB) is an online repository with stratigraphic information for petroleum wells in the United States portion of the onshore Gulf of Mexico Basin that provides several of the following attributes: a) deep penetrations (generally, total depth of 10,000 feet or more), b) high quality and diverse geophysical well log suites, c) lithostratigraphic logs, d) biostratigraphic units (biozones) and reports, and/or e) core or cuttings samples. First release: March 2023 Revised: November 2023 (ver. 2.0) Categories: Data, Data Release - Revised; Tags: Alabama, Florida, Louisiana, Mississippi, Texas, All tags... USGS Science Data Catalog (SDC), biostratigraphy, core cuttings, faunal and floral census (microscopic), formation, fossils, geochemistry, geology, geophysical well logs, geophysics, geoscientificInformation, lithostratigraphy, micropaleontology, petrography, reservoir conditions, reservoir properties, unconformities, Fewer tags Geochemical data supporting a comparison of apatite between regional magmatism and the Pea Ridge Iron Oxide-Apatite-Rare Earth Element (IOA-REE) and Boss Iron Oxide-Copper-Cobalt-Gold-REE Deposits (IOCG) deposits, southeastern Missouri, USA This data release presents high-spatial resolution geochemical analyses collected from Mesoproterozoic apatite crystals in igneous rocks from the St. Francois Mountains terrane and coeval ore rocks from the Pea Ridge iron oxide-apatite-rare earth element (IOA-REE) and Boss iron oxide-copper-gold (IOCG) deposits. These deposits are located in the southeast Missouri iron metallogenic province. These data support a journal article entitled, “Apatite trace element geochemistry and cathodoluminescent textures—A comparison between regional magmatism and the Pea Ridge IOA-REE and Boss IOCG deposits, southeastern Missouri iron metallogenic province, USA” by Celestine N. Mercer, Kathryn E. Watts, and Juliane Gross, that... Categories: Data; Tags: BSE, Boss, EMP, GGGSC, Geochemistry, All tags... Geology, Geophysics, and Geochemistry Science Center, IOA-REE, IOCG, LA-ICP-MS, MRP, Mineral Resources Program, Mineralogy, Missouri, Pea Ridge, Pea Ridge, Saint Francois Mountains, USGS Science Data Catalog (SDC), United States, apatite, backscattered electron microscopy, chemical analysis, economy, electron microprobe, geoscientificInformation, igneous rocks, iron oxide-apatite-rare earth element deposit, iron oxide-copper-cobalt-gold-REE deposit, laser ablation inductively coupled plasma mass spectrometry, mineral resources, petrography, rare earth elements, rocks and deposits, Fewer tags Collections inventory for the U.S. Geological Survey Woods Hole Coastal and Marine Science Center Samples Repository (ver. 2.0, September 2023) Since 2002, the Woods Hole Coastal and Marine Science Center’s Samples Repository supports research by providing secure storage for geological, biological, and geochemical samples; maintaining organization and an active inventory of these sample collections; and providing access to these collections for study and reuse.This collections inventory has been compiled, organized, and released as a searchable database to provide researchers and the general public with means to discover and request scientific sample material preserved and maintained by the Woods Hole Coastal and Marine Science Center Samples Repository. Updates are made to the inventory as the collections grow, and version history information is available... Categories: Collection, Data; Tags: Arctic Ocean, Atlantic Continental Margin, Atlantic Ocean, Blake Plateau, Buzzards Bay, All tags... Cape Cod Bay, Chesapeake Bay, Chukchi Plateau, Collection, Complete, Georges Bank, Gulf of Maine, Gulf of Mexico, Lake Huron, Lake Michigan, Long Island Sound, Massachusetts Bay, Nantucket Sound, New York Bight, Nisqually Reach, Nisqually River, Puerto Rico, Samples Repository, Stellwagen Bank, U.S. Geological Survey, USGS, USGS:f0e1b755-278b-4997-ba73-b271499bdacb, Vineyard Sound, WHCMSC, West Florida Shelf, Woods Hole Coastal and Marine Science Center, aquatic biology, archive, coral skeleton, cores, dredge sampling, dredge sampling, dredges, drilling and coring, drilling and coring, filters, foraminiferans, fossils, geoscientificInformation, grab sampling, grab sampling, grabs, location, marine biology, marine geology, marine geology, marine sediment samples, micropaleontology, ndc_collection, oceans, paleontology, paleontology, peel samples, petrography, physical samples, protists, sample repositories, samples, sampling, scanning electron microscope (SEM) mounts, sedimentary environments, slides, specimen collecting, subsamples, thin section analysis, unconsolidated deposits, water samples, water sampling, water sampling, Fewer tags