Publications
Listed below are publication products directly associated with the Geology, Energy & Minerals Science Center:
Filter Total Items: 1241
Organic petrology of the Aptian-age section in the downdip Mississippi Interior Salt Basin, Mississippi, USA: Observations and preliminary implications for thermal maturation history Organic petrology of the Aptian-age section in the downdip Mississippi Interior Salt Basin, Mississippi, USA: Observations and preliminary implications for thermal maturation history
This study identifies a thermal maturity anomaly within the downdip Mississippi Interior Salt Basin (MISB) of southern Mississippi, USA, through examination of bitumen reflectance data from Aptian-age strata (Sligo Formation, Pine Island Shale, James Limestone, and Rodessa Formation). U.S. Geological Survey (USGS) reconnaissance investigations conducted in 2011–2012 examined Aptian-age...
Authors
Brett J. Valentine, Paul C. Hackley, Catherine B. Enomoto, Alana M. Bove, Frank T. Dulong, Celeste D. Lohr, Krystina R. Scott
Manganese: it turns iron into steel (and does so much more) Manganese: it turns iron into steel (and does so much more)
Manganese is a common ferrous metal with atomic weight of 25 and the chemical symbol Mn. It constitutes roughly 0.1 percent of the Earth’s crust, making it the 12th most abundant element. Its early uses were limited largely to pigments and oxidants in chemical processes and experiments, but the significance of manganese to human societies exploded with the development of modern...
Authors
William F. Cannon
Standardization of reflectance measurements in dispersed organic matter: results of an exercise to improve interlaboratory agreement Standardization of reflectance measurements in dispersed organic matter: results of an exercise to improve interlaboratory agreement
Vitrinite reflectance generally is considered the most robust thermal maturity parameter available for application to hydrocarbon exploration and petroleum system evaluation. However, until 2011 there was no standardized methodology available to provide guidelines for vitrinite reflectance measurements in shale. Efforts to correct this deficiency resulted in publication of ASTM D7708...
Authors
Paul C. Hackley, Carla Viviane Araujo, Angeles G. Borrego, Antonis Bouzinos, Brian Cardott, Alan C. Cook, Cortland Eble, Deolinda Flores, Thomas Gentzis, Paula Alexandra Goncalves, Joao Graciano Mendonca Filho, Maria Hamor-Vido, Iwona Jelonek, Kees Kommeren, Wayne Knowles, Jolanta Kus, Maria Mastalerz, Taissa Rego Menezes, Jane Newman, Mark Pawlewicz, Walter Pickel, Judith Potter, Paddy Ranasinghe, Harold Read, Julito Reyes, Genaro De La Rosa Rodriguez, Igor Viegas Alves Fernandes de Souza, Isabel Suarez-Ruiz, Ivana Sykorova, Brett J. Valentine
Pore characteristics of Wilcox Group Coal, U.S. Gulf Coast Region: Implications for the occurrence of coalbed gas Pore characteristics of Wilcox Group Coal, U.S. Gulf Coast Region: Implications for the occurrence of coalbed gas
Pore characteristics of 27 subbituminous coal samples (16 mesh splits) from the Paleocene–Eocene Wilcox Group of north Louisiana (Ouachita and Caldwell Parishes) and south Texas (Zavala County) were examined in relation to desorbed gas content. Coal gas of the Wilcox Group is primarily biogenic in origin; thermogenic gas also may be present in some areas. On an as-received basis...
Authors
Sharon M. Swanson, Maria D. Mastalerz, Mark Engle, Brett J. Valentine, Peter D. Warwick, Paul C. Hackley, Harvey E. Belkin
Powder X-ray diffraction laboratory, Reston, Virginia Powder X-ray diffraction laboratory, Reston, Virginia
The powder x-ray diffraction (XRD) laboratory is managed jointly by the Eastern Mineral and Environmental Resources and Eastern Energy Resources Science Centers. Laboratory scientists collaborate on a wide variety of research problems involving other U.S. Geological Survey (USGS) science centers and government agencies, universities, and industry. Capabilities include identification and
Authors
Nadine M. Piatak, Frank T. Dulong, John C. Jackson, Helen W. Folger
Sandstone copper assessment of the Teniz Basin, Kazakhstan Sandstone copper assessment of the Teniz Basin, Kazakhstan
The U.S. Geological Survey (USGS) conducts national and global resource assessments (mineral, energy, water, and biological) to provide data and scientific analyses to support decision making. Three-part mineral resource assessments result in informed, unbiased, quantitative, and probabilistic estimates of undiscovered mineral resources and deposits. In particular, mineral assessment...
Authors
Pamela M. Cossette, Arthur A. Bookstrom, Timothy S. Hayes, Gilpin R. Robinson, John C. Wallis, Michael L. Zientek
Petrographic maturity parameters of a Devonian shale maturation series, Appalachian Basin, USA. ICCP Thermal Indices Working Group interlaboratory exercise Petrographic maturity parameters of a Devonian shale maturation series, Appalachian Basin, USA. ICCP Thermal Indices Working Group interlaboratory exercise
This paper presents results of an interlaboratory exercise on organic matter optical maturity parameters using a natural maturation series comprised by three Devonian shale samples (Huron Member, Ohio Shale) from the Appalachian Basin, USA. This work was conducted by the Thermal Indices Working Group of the International Committee for Coal and Organic Petrology (ICCP) Commission II...
Authors
Carla Viviane Araujo, Angeles G. Borrego, Brian Cardott, Renata Brenand A. das Chagas, Deolinda Flores, Paula Goncalves, Paul C. Hackley, James C. Hower, Marcio Luciano Kern, Jolanta Kus, Maria Mastalerz, Joao Graciano Mendonca Filho, Joalice de Oliveira Mendonca, Taissa Rego Menezes, Jane Newman, Isabel Suarez-Ruiz, Frederico Sobrinho da Silva, Igor Viegas de Souza
Raman spectroscopic characterization of CH4 density over a wide range of temperature and pressure Raman spectroscopic characterization of CH4 density over a wide range of temperature and pressure
The positions of the CH4 Raman ν1 symmetric stretching bands were measured in a wide range of temperature (from −180 °C to 350 °C) and density (up to 0.45 g/cm3) using high-pressure optical cell and fused silica capillary capsule. The results show that the Raman band shift is a function of both methane density and temperature; the band shifts to lower wavenumbers as the density increases...
Authors
Linbo Shang, I-Ming Chou, Robert Burruss, Ruizhong Hu, Xianwu Bi
Reconstruction of an early Paleozoic continental margin based on the nature of protoliths in the Nome Complex, Seward Peninsula, Alaska Reconstruction of an early Paleozoic continental margin based on the nature of protoliths in the Nome Complex, Seward Peninsula, Alaska
The Nome Complex is a large metamorphic unit that sits along the southern boundary of the Arctic Alaska–Chukotka terrane, the largest of several micro continental fragments of uncertain origin located between the Siberian and Laurentian cratons. The Arctic Alaska–Chukotka terrane moved into its present position during the Mesozoic; its Mesozoic and older movements are central to...
Authors
Alison B. Till, Julie A. Dumoulin, Robert A. Ayuso, John N. Aleinikoff, Jeffrey M. Amato, John F. Slack, W.C. Pat Shanks
Porphyry copper assessment of western Central Asia Porphyry copper assessment of western Central Asia
The U.S. Geological Survey conducted an assessment of resources associated with porphyry copper deposits in the western Central Asia countries of Kyrgyzstan, Uzbekistan, Kazakhstan, and Tajikistan and the southern Urals of Kazakhstan and Russia as part of a global mineral resource assessment. The purpose of the study was to (1) delineate permissive areas (tracts) for undiscovered...
Authors
Byron R. Berger, John L. Mars, Paul Denning, Jeffrey D. Phillips, Jane M. Hammarstrom, Michael L. Zientek, Connie L. Dicken, Lawrence J. Drew, Dmitriy with contributions from Alexeiev, Reimar Seltmann, Richard J. Herrington
Niobium and tantalum: indispensable twins Niobium and tantalum: indispensable twins
Niobium and tantalum are transition metals almost always paired together in nature. These “twins” are difficult to separate because of their shared physical and chemical properties. In 1801, English chemist Charles Hatchett uncovered an unknown element in a mineral sample of columbite; John Winthrop found the sample in a Massachusetts mine and sent it to the British Museum in London in...
Authors
Klaus Schulz, John Papp
Regional mapping of hydrothermally altered igneous rocks along the Urumieh-Dokhtar, Chagai, and Alborz Belts of western Asia using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data and Interactive Data Language (IDL) logical oper Regional mapping of hydrothermally altered igneous rocks along the Urumieh-Dokhtar, Chagai, and Alborz Belts of western Asia using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data and Interactive Data Language (IDL) logical oper
Regional maps of phyllic and argillic hydrothermal alteration were compiled using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data and logical operator algorithms. The area mapped extends from northwestern Iran to southeastern Pakistan and includes volcanic and magmatic arcs that make up the Urumieh-Dokhtar volcanic belt (UDVB), the Chagai volcanic belt (CVB)...
Authors
John L. Mars