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Results of the Basin and Range Geoscientific Experiment (BARGE): A marine-style seismic reflection survey across the eastern boundary of the central Basin and Range Province

Brady, Robert and Wernicke, Brian and McNutt, Marcia and Mutter, John and Correa, Gustavo (2000) Results of the Basin and Range Geoscientific Experiment (BARGE): A marine-style seismic reflection survey across the eastern boundary of the central Basin and Range Province. Geochemistry, Geophysics, Geosystems, 1 (9). 2000GC000078. ISSN 1525-2027. http://resolver.caltech.edu/CaltechAUTHORS:BRAggg00

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Abstract

Approximately 120 km of marine-style deep seismic reflection data were shot during a survey on the waters of Lake Mead in southeastern Nevada. The survey extends from near the abrupt eastern edge of the Basin and Range Province (BRP) to a point ~80 km into the extended domain. Data quality throughout the survey ranged from fair to poor; the recorded data include significant towing noise and occasionally problematic diffractions and sideswipe from canyon walls. The upper 2–4 s of the data shows well-defined reflections from sedimentary fill, but below that point, reflectivity is weak. Lower crustal reflectivity is generally absent under the eastern part of the survey, with a slight increase in reflectivity to the west. The reflection Moho appears as a series of weakly defined, discontinuous reflections, most of which occur at 10–11 s. A particularly interesting feature of the data set is the relative lack of reflectivity from the lower crust, which is a region of strong reflectivity on other seismic reflection data sets from the BRP.


Item Type:Article
Additional Information:Copyright 2000 by the American Geophysical Union. Received April 21, 2000; Revised July 28, 2000; Accepted August 18, 2000; Published September 22, 2000.
Subject Keywords:Seismic; tectonics; extension; Tertiary; Nevada; Arizona; Marine seismics; continental crust; continental tectonics–extensional; North America
Record Number:CaltechAUTHORS:BRAggg00
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:BRAggg00
Alternative URL:http://dx.doi.org/10.1029/2000GC000078
Official Citation:Brady, R., B. Wernicke, M. McNutt, J. Mutter, and G. Correa, 2000. Results of the Basin and Range Geoscientific Experiment (BARGE): A marine-style seismic reflection survey across the eastern boundary of the central Basin and Range Province, Geochem. Geophys. Geosyst., vol. 1, Paper number 2000GC000078
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1101
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:19 Dec 2005
Last Modified:26 Dec 2012 08:42

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