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Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts U.S. Geological Survey Paul C Hackley U.S. Geological Survey - ScienceBase Eric A Morrissey Mary R Croke Energy and Minerals Midwest Region Categories Data (2) Tag Types Theme (2) Place (2) Harvest Set (2) USGS Scientific Topic Keyword (2) Tag Schemes USGS Thesaurus (https://www2.usgs.gov/science/tab-term.html) (1) Geographic Names Information System (GNIS) (https://geonames.usgs.gov/apex/f?p=138:1:0:::::) (1) USGS Thesaurus (1) Geolex, https://ngmdb.usgs.gov/lex-bin/search.pl (1) View Results as: JSON ATOM CSV

Data release for Organic geochemistry and petrology of Devonian shale in eastern Ohio: implications for petroleum systems assessment (2018) Recent production of light sweet oil from shallow (~2,000 ft) horizontal wells in the Upper Devonian Berea Sandstone of eastern Kentucky and historical oil production from conventional wells in the Berea of adjoining southern Ohio has prompted re-evaluation of Devonian petroleum systems in the central Appalachian Basin. Herein, we examined Upper Devonian Ohio Shale (lower Huron Member) and Middle Devonian Marcellus Shale organic-rich source rocks from eastern Ohio and nearby areas using organic petrography and geochemical analyses of solvent extracts. The data indicate the organic matter in the Ohio and Marcellus Shales was primarily derived from marine algae and its degradation products including bacterial biomass.... Categories: Data; Tags: Berea Sandstone, Energy Resources, Huron Member, Kentucky, Marcellus Shale, All tags... Ohio, Ohio Shale, USGS Science Data Catalog (SDC), Virginia, West Virginia, biomarkers, organic petrography, petroleum geochemistry, petroleum system, thermal maturity, Fewer tags Organic Petrography and Diagenesis of Leonardian Mudrocks and Carbonates, Midland Basin, Texas (2018) As part of a larger study, organic petrographic features of Leonardian Wolfcamp A repetitive siliceous and calcareous mudrock and fine-grained carbonate lithofacies cycles occurring in the R. Ricker #1 core from Reagan County, Midland Basin, Texas were evaluated. The objectives of the petrographic investigation were to estimate thermal maturity, identify organic matter types and abundances, and identify the presence or absence of migrated hydrocarbons. An integrated analytical program included geochemical screening [total organic carbon (TOC) content by LECO, programmed pyrolysis by HAWK, including from solvent-extracted samples], X-ray diffraction mineralogy, organic petrography, SEM-EDS including correlative light... Categories: Data; Tags: Energy Resources, Organic petrography, Reagan County, Texas, USGS Science Data Catalog (SDC), All tags... pyrolysis, solid bitumen, thermal maturity, Fewer tags