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Thursday, December 30, 2010

Geologic controls on thermal maturity patterns in Pennsylvanian coal-bearing rocks in the Appalachian basin

Outside Publication: International Journal of Coal Geology
For a copy of the report: Email Leslie Ruppert

Thermal maturation patterns of Pennsylvanian strata in the Appalachian basin were determined by compiling and contouring published and unpublished vitrinite reflectance (VR) measurements.
Ruppert, L.F., Hower, J.C., Ryder, R.T., Trippi, M.H., Grady, W.C., and Levine, J.R., 2010, Geologic controls on observed thermal maturation patterns in Pennsylvanian coalbearing rocks in the Appalachian basin: International Journal of Coal Geology, v. 81, no. 3, p. 169-181.


Wednesday, November 17, 2010

U.S. Gulf Coast Region Oil and Gas Assessment Thermal Maturity Data

USGS Publication: Open-File Report 2010–1072
The purpose of this report is to make available to the public RockEval and vitrinite reflectance data from more than 1,900 samples of Mesozoic and Tertiary rock core and coal samples in the Gulf of Mexico area in a format that facilitates inclusion into a geographic information system.


Monday, November 01, 2010

Natural Bitumen and Extra-heavy oil

As published in the 2010 Survey of Energy Resources: World Energy Council

Outside Publication: 2010 Survey of Energy Resources: World Energy Council
Natural bitumen and extra-heavy oil are characterised by high viscosity, high density (low API gravity), and high concentrations of nitrogen, oxygen, sulphur, and heavy metals. These characteristics result in higher costs for extraction, transportation, and refining than are incurred with conventional oil. Despite their cost and technical challenges, major international oil companies have found it desirable to acquire, develop, and produce these resources in increasing volumes. Large in-place resource volumes provide a reliable long-term flow of liquid hydrocarbons and provide substantial payoff for any incremental improvements in recovery. High oil prices during 2007 and 2008 spurred new development and production which, in turn, have intensified concern about environmental effects of production increases.  NOTE: This report is presented in Portable Document Format (PDF). Download the latest version of Adobe Reader, free of charge. 


Monday, October 04, 2010

Oil Shale and Nahcolite Resources, Piceance Basin

USGS Publication: Digital Data Series 69-Y
This report presents an in-place assessment of the oil shale and nahcolite resources of the Green River Formation in the Piceance Basin of western Colorado. Estimated in-place oil is about 1.5 trillion barrels, based on Fischer a ssay results from boreholes drilled to evaluate oil shale, making it the largest oil shale deposit in the world. The estimated in-place nahcolite resource is about 43.3 billion short tons.


Monday, October 04, 2010

Oil Shale Resources of the Uinta Basin

USGS Publication: Digital Data Series 69-BB
This report provides extensive details of  an in-place assessment of the oil shale  resources of the Uinta Basin of Utah and Colorado.  The total in-place resource for the Uinta Basin is estimated at 1.32 trillion barrels. This is only slightly lower than the estimated 1.53 trillion barrels for the adjacent Piceance Basin, Colorado, to the east, which is thought to be the richest oil shale deposit in the world.


Sunday, October 03, 2010

2010 Updated Assessment of Undiscovered Oil and Gas Resources of the NPRA

Press Release & Publication
"These new findings underscore the challenge of predicting whether oil or gas will be found in frontier areas and the importance of analyzing the geologic characteristics and history of an area in order to understand the oil and gas resources,” explains USGS Director, Dr. Marcia McNutt.


Wednesday, September 29, 2010

Revised Paleogene Coal Stratigraphy, Correlation, and Deposition, Powder River Basin

One Century Later

USGS Publication: Professional Paper 1777
Improved knowledge of alluvial depositional environments as influenced by external and internal paleotectonic conditions within the Powder River Basin permits more accurate correlation, mapping, and resource estimation of the Fort Union and Wasatch coal beds. The result is a better understanding of the sedimentology of the basin infill deposits in relation to peat bog accumulation.


Monday, September 27, 2010

Decision Analysis Framing Study

In-Valley Drainage Management Strategies for the Western San Joaquin Valley, California

USGS Publication: Open-File Report 2009-1121
Constraints on drainage management in the western San Joaquin Valley and implications of proposed approaches to management were recently evaluated by the U.S. Geological Survey (USGS).


Wednesday, September 22, 2010

Comparison of atmospheric mercury speciation and deposition

Study includes nine sites across central and eastern North America, as well as Puerto Rico

Outside Publication: AGU Journal of Geophysical Research: Atmospheres
This study presents more than 5 cumulative years of tropospheric mercury (Hg) speciation measurements, over the period of 2003–2009, for eight sites in the central and eastern United States and one site in coastal Puerto Rico.


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