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Browse recent USGS publications related to energy resources. 

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Net dextral slip, Neogene San Gregorio–Hosgri fault zone, coastal California: Geologic evidence and tectonic implications Net dextral slip, Neogene San Gregorio–Hosgri fault zone, coastal California: Geologic evidence and tectonic implications

Reinterpretation of onshore and offshore geologic mapping, examination of a key offshore well core, and revision of cross-fault ties indicate Neogene dextral strike slip of 156 ± 4 km along the San Gregorio–Hosgri fault zone, a major strand of the San Andreas transform system in coastal California. Delineating the full course of the fault, defining net slip across it, and showing its...
Authors
William R. Dickinson, Mihai N. Ducea, Lewis I. Rosenberg, H. Gary Greene, Stephan A. Graham, Joseph C. Clark, Gerald E. Weber, Steven Kidder, W. Gary Ernst, Earl E. Brabb

Transylvanian Composite Total Petroleum System of the Transylvanian Basin Province, Romania, Eastern Europe Transylvanian Composite Total Petroleum System of the Transylvanian Basin Province, Romania, Eastern Europe

The Transylvanian Composite Total Petroleum System and the Transylvanian Neogene Suprasalt Gas Assessment Unit were identified in the Transylvanian Basin Province (4057), which lies entirely within the country of Romania. The assessment unit is composed of middle Miocene (Badenian) to Pliocene strata. Gas from the assessment unit is biogenic and originated from bacterial activity on...
Authors
Mark Pawlewicz

Kimmeridgian Shales Total Petroleum System of the North Sea Graben Province Kimmeridgian Shales Total Petroleum System of the North Sea Graben Province

The North Sea Graben of northwestern Europe, World Energy Project Province 4025, is entirely offshore within the territorial waters of Denmark, Germany, the Netherlands, Norway, and the United Kingdom. Extensional tectonics and failed rifting are fundamental to the distribution of oil and gas in the province. Accordingly, the geologic history and reser-voir rocks of the province are...
Authors
Donald L. Gautier

Implications of volcanism in coastal California for the Neogene deformation history of western North America Implications of volcanism in coastal California for the Neogene deformation history of western North America

The geologic record of coastal California includes evidence of numerous volcanic centers younger than 30 Ma that do not appear to have erupted in an arc setting. By correlating these volcanic centers with specific slab windows predicted from analysis of magnetic anomalies on the Pacific plate, we add new constraints to tectonic reconstructions since 30 Ma. Our correlations, such as...
Authors
Douglas S. Wilson, Patricia A. McCrory, Richard G. Stanley

Early to middle Jurassic salt in Baltimore Canyon trough Early to middle Jurassic salt in Baltimore Canyon trough

A pervasive, moderately deep (5-6 s two-way traveltime), high-amplitude reflection is traced on multichannel seismic sections over an approximately 7500 km² area of Baltimore Canyon Trough. The layer associated with the reflection is about 25 km wide, about 60 m thick in the center, and thins monotonically laterally, though asymmetrically, at the edges. Geophysical characteristics are...
Authors
B. Ann McKinney, Myung W. Lee, Warren F. Agena, C. Wylie Poag

Tar yields from low-temperature carbonization of coal facies from the Powder River Basin, Wyoming, USA Tar yields from low-temperature carbonization of coal facies from the Powder River Basin, Wyoming, USA

Tar yields from low-temperature carbonization correlate with the amount of crypto-eugelinite in samples selected to represent petrographically distinct coal facies of the Wyodak-Anderson coal zone. Tar yields from Fischer Assay range from
Authors
Ronald W. Stanton, Peter D. Warwick, Sharon M. Swanson
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