MA, Chao, Department of Geosience, University of Wisconsin Madison, Weeks Hall, 1215 W Dayton St, Madison, WI 53706, MEYERS, Stephen R., Department of Geoscience, University of Wisconsin, 1215 West Dayton St, Madison, WI 53076, SAGEMAN, Bradley B., Earth and Planetary Sciences, Northwestern University, 1850 Campus Drive, Evanston, IL 60208, SINGER, Brad S., Department of Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53076, JICHA, Brian R., Department of Geoscience, University of Wisconsin-Madison, 1215 W. Dayton St, Madison, WI 53706 and JOO, Young Ji, Department of Earth and Planetary Sciences, Northwestern University, 1850 Campus Drive, Evanston, IL 60208-2150, mchao4@wisc.edu