STANLEY, Richard G.1, TILL, Alison B.
2, SIMPSON, Megan K.
1, SCHENK, Christopher J.
3, SALTUS, Richard W.
4, ROWAN, Elisabeth L.
5, PHILLIPS, Jeffrey D.
4, MORIN, Robert L.
6, LILLIS, Paul G.
7 and CREWS, Jesse M.
8, (1)U.S. Geological Survey, 345 Middlefield Road, MS 969, Menlo Park, CA 94025, (2)USGS, Anchorage, AK 99508, (3)U.S. Geol. Survey, P.O Box 25046, Mail Stop 939, Denver, CO 80225, (4)U.S. Geol Survey, Mail Stop 964 - Box 25046, Denver Federal Center, Denver, CO 80225-0046, (5)U.S. Geological Survey, 12201 Sunrise Valley Dr., M.S. 956, Reston, VA 20192, (6)U.S. Geol Survey, 345 Middlefield Road, Mail Stop 989, Menlo Park, CA 94025, (7)U.S. Geol Survey, Denver Federal Center, Box 25046, Lakewood, CO 80225, (8)U.S. Geol. Survey, 345 Middlefield Road, MS 969, Menlo Park, CA 94025, rstanley@usgs.gov, rstanley@usgs.gov