BURNS, Scott F., Department of Geology, Portland State University, PO Box 751, Portland, OR 97207-0751, burnss@pdx.edu and BARNARD, Kathryn Nora, Department of Geology, Portland State University, PO Box 751, Portland, OR 97202

HANNA, Teresa, Geology, Portland State University, P.O. Box 751, Portland, OR 97207, trhanna27@gmail.com and BURNS, Scott F., Department of Geology, Portland State University, PO Box 751, Portland, OR 97207-0751

WHITNEY, Hilary, Geology, Portland State University, PO Box 751, Portland, OR 97201, haw4@pdx.edu and BURNS, Scott F., Department of Geology, Portland State University, PO Box 751, Portland, OR 97207-0751

BARNARD, Kathryn Nora, Department of Geology, Portland State University, PO Box 751, Portland, OR 97202, katbarnard@gmail.com and BURNS, Scott F., Department of Geology, Portland State University, PO Box 751, Portland, OR 97207-0751

PENNER-ASH, Cameron, Department of Geology, Whitman College, 280 Boyer Ave, Walla Walla, WA 99362, pennerc@whitman.edu and POGUE, Kevin R., Department of Geology, Whitman College, Department of Geology, Walla Walla, WA 99362

LIECHTY, Nathan, Geology, Whitman College, 6630 Old Olympic HWY SW, Olympia, WA 98512, nathan.w.liechty@gmail.com

KARAKIS, Snejana, Geosciences, University of Wisconsin Milwaukee, P.O. Box 413, Milwaukee, WI 53201, karakis@uwm.edu

CAMERON, Barry I., KETTER, Brett, and KARAKIS, Snejana, Geosciences, University of Wisconsin-Milwaukee, P.O. Box 413, Milwaukee, WI 53201, bcameron@uwm.edu

KETTER, Brett and CAMERON, Barry I., Geosciences, University of Wisconsin-Milwaukee, P.O. Box 413, Milwaukee, WI 53201, bketter@uwm.edu

POGUE, Kevin R., Department of Geology, Whitman College, Department of Geology, Walla Walla, WA 99362, pogue@whitman.edu