Cenozoic extension superimposed on a Mesozoic thrust belt, central Nevada

The central Nevada thrust belt (CNTB) is a north-south trending belt of contractile structures in the hinterland of the Sevier orogenic belt. This study tests the hypothesis that analysis and regional correlation of CNTB structures is possible after retrodeformation of younger extensional faults; The central Pancake Range underwent multiple episodes of Cenozoic extensional faulting. Fault sets generally strike N-S or NE-SW; one synvolcanic set strikes E-W. These normal fault sets: (1) form five temporally distinct episodes that correspond to regional tectonic events; (2) record a rotation in the stress field through time; and (3) locally developed within a three dimensional strain field as opposed to plane strain; The Sand Spring, Ike Spring, and Indian Spring thrusts (previously undocumented) regionally correlate to the Duckwater and White Pine thrusts. These thrust faults have steeply-dipping ramps and formed out-of-sequence. These structures represent the CNTB in east-central Nevada, a single contractional belt with at least 27 km of shortening.

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Geoscience

Grantor dc:publisher

University of Nevada, Las Vegas

Year

2001

Author dc:creator

• Gilbert, Joseph John

Contributors dc:contributor

• Wanda J. Taylor

Statement dc:rights

• IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

Language dc:language

English

Identifier

https://oasis.library.unlv.edu/rtds/1320

OAI identifier oai:identifier

oai:oasis.library.unlv.edu:rtds-2319