- Received 16 September 2016.
- Revision received 6 January 2017.
- Accepted 13 February 2017.
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© Geological Society of America
- 1Department of Geological Sciences, Central Washington University, 400 E. University Way, Ellensburg, Washington 98926, USA
- 2Department of Earth and Planetary Sciences Department, University of California, 1156 High Street, Santa Cruz, California 95064, USA
- 3Physics Department, California Polytechnic State University, Building 180, Room 204, San Luis Obispo, California 93407, USA