Brian Wernicke - Academia.edu (original) (raw)

Papers by Brian Wernicke

Journal of Construction Engineering and Management

Bl Summary Bl Introduction B3 Investigations by the U.S. Bureau of Mines B4 Investigations by the... more Bl Summary Bl Introduction B3 Investigations by the U.S. Bureau of Mines B4 Investigations by the U.S. Geological Survey B4 Appraisal of identified resources B4 Mining history B4 Mines, prospects, and mineralized areas B4 Whitmore mine B4 Iron Blossom prospect B5 Limestone B5 Conclusions B5 Assessment of potential for undiscovered resources B5 Geology B5 Geologic setting B5 Description of rock units B7 Structure B7 Geophysics B8 Gravity data B8 Aeromagnetic data B8 Geochemical investigations and mineralized rocks Bll Analytical methods Bll Results of studies B12 Stream-sediment samples B13 Rock samples B13 Mineral and energy resources B16 Mineralized systems B16 Possible metallic mineral deposit types B16 Other mineral deposit types BIT Energy resources B18 References cited B18 Appendix B19 PLATE [Plate is in pocket] 1. Map showing mineral resource potential, generalized geology, geochemical sampling sites, and mine and prospect locations of the Mormon Mountains Wilderness Study Area and vicinity

Nature

... Dating topography of the Sierra Nevada, California, using apatite (UTh)/He ages. Martha A. H... more ... Dating topography of the Sierra Nevada, California, using apatite (UTh)/He ages. Martha A. House 1, 2 , Brian P. Wernicke 1 & Kenneth A. Farley 1. ... Forgotten your password. You can request this document from a number of document delivery services. ...

Geological Society, London, Memoirs

Glaciogenic deposits in the Death Valley region occur within the Neoproterozoic Kingston Peak For... more Glaciogenic deposits in the Death Valley region occur within the Neoproterozoic Kingston Peak Formation (Fm.). In the Panamint Range, immediately west of Death Valley, the formation is as much as 1000 m thick and is continuously exposed for nearly 100 km along the strike of the range. Although the strata are variably metamorphosed and locally exhibit pronounced ductile strain, original sedimentary textures are well preserved in many places. Diamictite occurs in two distinct intervals, a lower one comprising the Limekiln Spring and Surprise members, and an upper one, the Wildrose Sub-member of the South Park Member. Lonestones, bullet-shaped and striated clasts, and rare dropstones within these members, along with the impressive lateral continuity of diamictic units, support a glacial origin. Both diamictic intervals are succeeded by well-defined carbonates, the oldest is the Sourdough Member of the Kingston Peak Fm. and the younger one is the Sentinel Peak Member of the overlying No...

Eos, Transactions American Geophysical Union

Exposed Cross-Sections of the Continental Crust, 1990

A fundamental issue in continental dynamics is whether deformation within the broad Pacific-North... more A fundamental issue in continental dynamics is whether deformation within the broad Pacific-North America plate boundary in the southwestern United States is better described by the relative motions of rigid microplates or by diffuse crustal flow. Whereas the Colorado Plateau and Sierra Nevada-Great Valley regions appear to be fairly undeformed over geological time scales, crustal extension between these regions in the Basin and Range province based on prevalent Quaternary faulting appears to have been relatively homogeneous. However, historic seismicity, which is largely confined within the relatively narrow Central Nevada Seismic Belt (CNSB) and the Intermountain Seismic Belt (ISB), may suggest that modern deformation of the Basin and Range province is also confined to these province bounding belts and that the central part of the Basin and Range province, the Central Great Basin region, is presently relatively rigid. We use site velocities from several campaign and continuous GPS networks to investigate the rigidity of the Colorado Plateau, Sierra Nevada-Great Valley, and a portion of the Great Basin region where velocities appear to be relatively constant. For each region, we assess the fit of three simple models to the data: a translating rigid block, a rotating rigid microplate, and a constant velocity gradient plus a translation. We find that each model fits the data within each region equally well despite the significant differences in the geological histories of the regions. To within the resolution of the data, all three regions appear to be rigid with the exception of small elastic strains associated with block bounding fault zones, or other relatively small deformations perhaps associated with recent large earthquakes. Deformation associated with the regions separating these three "geodetic microplates," which does not necessarily exactly coincide with the seismic belts, is significantly more rapid. Whether short term rigid block behavior evolves into continuum behavior over longer time scales or whether the apparent rigidity within the central Basin and Range reflects a recent fundamental change in plate boundary deformation character awaits further investigations into the history of faulting within the Basin and Range interior.

Gsa Today, 2000

The Geological Society of America -- advancing the geosciences, enhancing professional growth, an... more The Geological Society of America -- advancing the geosciences, enhancing professional growth, and promoting geosciences in the service of humankind.

Geological Society of America Bulletin, 1990

CENTENNIAL ARTICLE Basin and Range extensional tectonics at the latitude of Las Vegas, Nevada BRI... more CENTENNIAL ARTICLE Basin and Range extensional tectonics at the latitude of Las Vegas, Nevada BRIAN WERNICKE GARY J. AXEN J. KENT SNOW Department of Earth and Planetary Sciences, Harvard University, Cambridge, Massachusetts 02138 ABSTRACT The Basin ...

Agu Spring Meeting Abstracts, May 1, 2009