Show simple item record

dc.contributor.advisor Heermance, Richard V. en
dc.contributor.author Chehal, Simarjit K. en
dc.date.accessioned 2014-09-16T19:12:34Z en
dc.date.available 2014-09-16T19:12:34Z en
dc.date.copyright 2014 en
dc.date.issued 2014-09-16 en
dc.date.submitted 2014-08 en
dc.identifier.uri http://hdl.handle.net/10211.3/126633 en
dc.description Includes bibliographical references (pages 115-118) en
dc.description.abstract The groundwater aquifer system in the northwestern region of Coachella Valley, California serves as a major natural resource for agricultural and municipal uses. In this region, the aquifer system is partitioned into four groundwater sub-basins due to the presence of the San Andreas fault zone. Previous investigation involving land surface deformation, seismic data, and groundwater data indicate there are at least three main strands of the San Andreas Fault- Mission Creek Strand, Banning Strand, and Garnet Hill Strand. For years, these faults have been characterized as simple barriers to fluid flow due to measureable offsets in the water table across the fault strands and hydrochemistry variations. The ability for a fault to act as a barrier to flow in an aquifer system is the result of significant development of gouge causing lateral variations in fault zone permeability but the mechanisms for gouge development in the Coachella Valley in unconsolidated-to-weakly consolidated sediments is unclear. Another explanation for variations in water chemistry, temperature, and groundwater levels is due to displacement of impermeable bedrock or relative offset of water bearing units. This study proposes to document variations of permeability and porosity across the San Andreas Fault zone. Field mapping, sampling and descriptions of fault zone, damage zone, and gouge width were recorded at four fault outcrop locations in the region. Analysis of porosity, hydraulic conductivity, intrinsic permeability, and grain size distribution across the fault zone associated with each fault strand indicate that different regions of the fault zone can xiii act to impede and/or enhance fluid flow across the faults. This data analysis of permeability and porosity variations across fault zones will help develop a better understanding of fault and aquifer interactions for future groundwater models, recharge activities, fault displacement, and development of gouge in unconsolidated sediments. en
dc.description.statementofresponsibility Simarjit K. Chehal en
dc.format.extent xiii, 219 pages en
dc.language.iso en en
dc.publisher California State University, Northridge en
dc.rights.uri http://scholarworks.csun.edu/xmlui/handle/10211.2/286 en
dc.subject San Andreas Fault System en
dc.subject Fault Zone Architecture en
dc.subject Fault System en
dc.subject.other Dissertations, Academic -- CSUN -- Geological Sciences. en
dc.title Estimation of permeability, porosity, and grain-size distributions across the San Andreas Fault Zone in northwest Coachella Valley, California (Riverside County) en
dc.type Thesis en
dc.date.updated 2014-09-16T19:12:34Z en
dc.contributor.department California State University, Northridge. Department of Geological Sciences en
dc.description.degree M.S. en
dc.contributor.committeeMember Tabidian, Mohamad A. en
dc.contributor.committeeMember Gillespie, Janice en
dc.rights.license By signing and submitting this license, you the author grant permission to CSUN Graduate Studies to submit your thesis or dissertation, and any additional associated files you provide, to CSUN ScholarWorks, the institutional repository of the California State University, Northridge, on your behalf. You grant to CSUN ScholarWorks the non-exclusive right to reproduce and/or distribute your submission worldwide in electronic or any medium for non-commercial, academic purposes. You agree that CSUN ScholarWorks may, without changing the content, translate the submission to any medium or format, as well as keep more than one copy, for the purposes of security, backup and preservation. You represent that the submission is your original work, and that you have the right to grant the rights contained in this license. You also represent that your submission does not, to the best of your knowledge, infringe upon anyone's copyright. If the submission contains material for which you do not hold copyright, or for which the intended use is not permitted, or which does not reasonably fall under the guidelines of fair use, you represent that you have obtained the unrestricted permission of the copyright owner to grant CSUN ScholarWorks the rights required by this license, and that such third-party owned material is clearly identified and acknowledged within the text or content of the submission. If the submission is based upon work that has been sponsored or supported by an agency or organization other than the California State University, Northridge, you represent that you have fulfilled any right of review or other obligations required by such contract or agreement. CSUN ScholarWorks will clearly identify your name(s) as the author(s) or owner(s) of the submission, and will not make any alterations, other than those allowed by this license, to your submission. en


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

Search DSpace


My Account

RSS Feeds