xi, 60 p. : ill. (some col.), maps (some col.). A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number. / I present an alternative approach to determine the magnitude and direction of
extension in the Basin and Range Province at the north end of Summer Lake basin using
GIS techniques. Offset across 161 faults and tilting of 56 fault blocks were estimated to
calculate extension as a function of azimuth in this area. The orientation of a
representative set of slickenlines was collected in the field to assign average values for
the GIS analysis.
Azimuthal variation of extension is consistent with a strain ellipse indicating plane
strain with extension of 1.5 to 5.5 percent along the maximum extension direction of N75E
and no extension along the minimum N15W axis. Blocks tilt on average 60° from the
maximum extension direction, suggesting the underlying detachment dips -N15E. This
technique allows strain associated with the numerous small faults to be added to the sparse
large faults for a complete regional analysis. / Committee in Charge:
Dr. Ray Weldon, Chair;
Dr. David Schmidt;
Dr. Marli Miller
| Identifer | oai:union.ndltd.org:uoregon.edu/oai:scholarsbank.uoregon.edu:1794/10082 |
| Date | 09 1900 |
| Creators | Treerotchananon, Anuwat, 1979- |
| Publisher | University of Oregon |
| Source Sets | University of Oregon |
| Language | en_US |
| Detected Language | English |
| Type | Thesis |
| Relation | University of Oregon theses, Dept. of Geological Sciences, M.S., 2009; |
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