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i
CONSTANCY OF STRAIN RELEASE RATES
ALONG THE NORTH ANATOLIAN FAULT
by
Özgür Kozacı
A Dissertation Presented to the
FACULTY OF THE GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(GEOLOGICAL SCIENCES)
December 2008
Copyright 2008 Özgür Kozacı
Object Description
| Title | Constancy of strain release rates along the North Anatolian fault |
| Author | Kozaci, Özgür |
| Author email | kozaci@usc.edu; ozgurkozaci@yahoo.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Geological Sciences |
| School | College of Letters, Arts and Sciences |
| Date defended/completed | 2008-06-01 |
| Date submitted | 2008 |
| Restricted until | Unrestricted |
| Date published | 2008-12-16 |
| Advisor (committee chair) | Dolan, James |
| Advisor (committee member) |
Davis, Gregory Judge, Darrell |
| Abstract | The behavior of major active faults at various temporal and spatial scales is one of the most fundamental, unresolved problems in modern tectonics. Determining the degree to which fault loading and strain release rates are constant (or non-constant) and documenting past earthquake occurrences are key approaches for understanding this phenomenon. I have employed geomorphic mapping, Quaternary dating methods, and paleoseismic trenching to generate fault rate and earthquake age data that help provide a better understanding of the North Anatolian fault's behavior in various temporal and spatial scales. Specifically, I mapped offset geomorphic markers along the North Anatolian fault and used cosmogenic nuclide (10Be and 36Cl) and radiocarbon (14C) dating methods to constrain the ages of these features. Using these and other published data, I also constructed one of the first compilations of strain-release rates for the North Anatolian fault. My compilation of these rate data reveals a constant slip rate of ~15-20 mm yr-1 over time scales of 103-105 years. This result, however, is slower than the geodetically constrained slip rate of 25 + 2 mm yr-1 [Reilinger et al., 2007], possibly indicating a strain transient. In addition to my slip rate studies, I performed paleoseismologic trenching on the eastern part of the North Anatolian fault at the village of Lorut. My results from this site demonstrate a relatively regular occurrence of large earthquakes along this stretch of the North Anatolian fault. I attribute the relatively constant strain release rates and regular earthquake recurrences to the mechanical simplicity of the Anatolian-Eurasian plate boundary in northern Turkey, which is dominated by the slip on the structurally mature North Anatolian fault. |
| Keyword | the North Anatolian fault; active tectonics; paleoseismology; cosmogenic nuclide dating; tectonic geomorphology |
| Geographic subject | faults: North Anatolian fault |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m1932 |
| Rights | Kozaci, Özgür |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-KOZACI-2532 |
| Archival file | uscthesesreloadpub_Volume26/etd-KOZACI-2532.pdf |
Description
| Title | Page 1 |
| Full text | i CONSTANCY OF STRAIN RELEASE RATES ALONG THE NORTH ANATOLIAN FAULT by Özgür Kozacı A Dissertation Presented to the FACULTY OF THE GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (GEOLOGICAL SCIENCES) December 2008 Copyright 2008 Özgür Kozacı |
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