Show simple item record

dc.contributor.advisor Dunne, George C. en Prevost, Dana Victor en 2014-10-30T23:02:59Z en 2014-10-30T23:02:59Z en 1984-05 en
dc.identifier.uri en
dc.description Includes bibliographical references (pages 99-105) en
dc.description California State University, Northridge. Department of Geological Sciences. en
dc.description.abstract Study of a transect of the northern Argus Range reveals Mesozoic structural features, recognized regionally, in complex relationship with local plutons and intrusion-related deformation. These have affected a 2,000-m-thick section of miogeoclinal, predominantly carbonate rock ranging in age from Devonian to Permian. During the Mesozoic the study area was located on the inland margin of a major Andean-type arc, represented by the Sierra Nevada batholith. Lithosphere adjacent to the batholith was greatly weakened by heating and experienced repeated episodes of compressive shortening. What may be the oldest folds in the area, northeast-trending (FA) folds, are located predominantly on Lookout Mountain and may be either rotated younger (FB) folds or related to the early Mesozoic Last Chance thrust system. Northwest-trending FB folds are members of a regionally recognized fold set characterized by a well developed axial surface cleavage and by vergence or overturning to the northeast. The Argus anticline is the main FB fold and is the most prominent structural feature of the study area. In the northern and southern portions of the study area, plutons have intruded and disrupted the hinge area of the Argus anticline. Three plutons of known or probable Middle Jurassic age have chemistry, normative mineralogy and modal mineralogy that are similar to calc-alkaline plutons making up the bulk of the Sierra Nevada batholith. One of these plutons has a unique and complex history of forcible emplacement. At least three fault sets, including a preintrusive, northwest-trending fault, thrust faults and northeast-trending faults are not regionally correlative and may be at least partly resultant of local intrusion-related stresses. The left-normal-slip Osborne Canyon fault significantly offsets the hinge area of the Argus anticline and cuts the Osborne Canyon granite. This fault is probably related to a widespread set of northwest-trending, left-separation faults which, in part, may pre-date Independence dikes of Late Jurassic age. Late Cenozoic Basin and Range normal faulting and basalt volcanism characterize the most recent phase of structural and igneous activity. en
dc.description.statementofresponsibility by Dana Victor Prevost en
dc.format application/pdf en
dc.format image/jpeg en
dc.format.extent ix, 105 pages en
dc.language.iso en en
dc.publisher California State University, Northridge en
dc.rights.uri en
dc.subject Geology -- California -- Northern Argus Range. en
dc.subject Faults (Geology)--California en
dc.subject.other Dissertations, Academic -- CSUN -- Geology. en
dc.title Geology of a transect of the Northern Argus Range, California en
dc.type Thesis en
dc.contributor.department Geological Sciences en M.S. en
dc.contributor.committeemember Stevens, Calvin H. en
dc.contributor.committeemember Gutstadt, Allan en
dc.contributor.committeeMember Stevens, Calvin H. en
dc.contributor.committeeMember Gutstadt, Allan en
dc.rights.license By signing and submitting this license, you the author grant permission to UniversityName Graduate Studies to submit your thesis or dissertation, and any additional associated files you provide, to RepositoryName, the institutional repository of the UniversityName, on your behalf.You grant to RepositoryName 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 RepositoryName 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 RepositoryName 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 UniversityName, you represent that you have fulfilled any right of review or other obligations required by such contract or agreement. RepositoryName 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


This item appears in the following Collection(s)

Show simple item record

Search DSpace

My Account

RSS Feeds