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Sedimentary structure of large sand dunes: examples from Dumont and Eureka dunes, California

Vriend, N. M. and Hunt, M. L. and Clayton, R. W. (2012) Sedimentary structure of large sand dunes: examples from Dumont and Eureka dunes, California. Geophysical Journal International, 190 (2). pp. 981-992. ISSN 0956-540X. https://resolver.caltech.edu/CaltechAUTHORS:20120813-104703591

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Abstract

The current research presents ground penetrating radar images up to 30 m in depth of two large desert dunes in California, USA— a barchanoid ridge in the Dumont field and a linear dune in the Eureka expanse. The radar images show a complicated structure of internal layering with ascending cross-strata, cross-bedding and bounding surfaces cutting through layers. Additional research using seismic refraction surveys and sand sampling refine the image of the subsurface (<5 m) structure. The sedimentary structure of the dune shows a strong internal layering with a cemented structure that may immobilize and influence migration of dune expanses. The subsurface features of the sand dune fields in the Mojave Desert provide evidence of dune building, wind regime and precipitation history.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1111/j.1365-246X.2012.05514.xDOIArticle
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-246X.2012.05514.x/abstractPublisherArticle
ORCID:
AuthorORCID
Hunt, M. L.0000-0001-5592-2334
Clayton, R. W.0000-0003-3323-3508
Additional Information:© 2012 The Authors. Geophysical Journal International © 2012 RAS. Accepted 2012 April 17; Received 2012 April 17; in original form 2011 June 5. The authors would like to thank Dr. Richard Hereford (USGS Flagstaff, Arizona) for his willingness to share long term environmental data, collected from averaging precipitation records from 52 Mojave desert weather stations. The help of Dr. Christopher Earls Brennen, Natalie Becerra, Angel Ruiz-Angulo, Erin Koos and many others, was essential during the field experiments at Dumont and Eureka dunes. Travel and equipment support for N. M. V. was provided through funding from the Pieter Langerhuizen Lambertuszoon Fonds.
Group:Seismological Laboratory
Funders:
Funding AgencyGrant Number
Pieter Langerhuizen Lambertuszoon FondsUNSPECIFIED
Subject Keywords:Ground penetrating radar; Geomorphology; Wave propagation
Issue or Number:2
Record Number:CaltechAUTHORS:20120813-104703591
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20120813-104703591
Official Citation:Vriend, N. M., Hunt, M. L. and Clayton, R. W. (2012), Sedimentary structure of large sand dunes: examples from Dumont and Eureka dunes, California. Geophysical Journal International, 190: 981–992. doi: 10.1111/j.1365-246X.2012.05514.x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:33123
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:13 Aug 2012 20:07
Last Modified:09 Mar 2020 13:18

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