Very High-Temperature Impact Melt Products As Evidence For
Very high-temperature impact melt products PNAS PLUS as evidence for cosmic airbursts and impacts 12,900 years ago Ted E. Buncha,1, Robert E. Hermesb, Andrew M.T. Moorec, Douglas J. Kennettd, James C. Weavere, James H. Wittkea, Paul S. DeCarlif, James L. Bischoffg, Gordon C. Hillmanh, George A. Howardi, David R. Kimbelj, Gunther Kletetschkak,l, Carl P. Lipom, Sachiko Sakaim, Zsolt Revayn, Allen Westo, Richard B. Firestonep, and James P. Kennettq aGeology Program, School of Earth Science and Environmental Sustainability, Northern Arizona University, Flagstaff, AZ 86011; bLos Alamos National Laboratory (retired), Los Alamos, NM 87545; cCollege of Liberal Arts, Rochester Institute of Technology, Rochester, NY 14623; dDepartment of Anthropology, Pennsylvania State University, University Park, PA 16802; eWyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138; fSRI International, Menlo Park, CA 94025; gUS Geological Survey, Menlo Park, CA 94025; hInstitute of Archaeology, University College London, London, United Kingdom; iRestoration Systems, LLC, Raleigh, NC 27604; jKimstar Research, Fayetteville, NC 28312; kFaculty of Science, Charles University in Prague, and lInstitute of Geology, Czech Academy of Science of the Czech Republic, v.v.i., Prague, Czech Republic; mInstitute for Integrated Research in Materials, Environments, and Society (IIRMES), California State University, Long Beach, CA 90840; nForschungsneutronenquelle Heinz Maier-Leibnitz (FRM II), Technische Universität München, Munich, Germany; oGeoScience Consulting, Dewey, AZ 86327; pLawrence Berkeley National Laboratory, Berkeley, CA 94720; and qDepartment of Earth Science and Marine Science Instititute, University of California, Santa Barbara, CA 93106 Edited by* Steven M. Stanley, University of Hawaii, Honolulu, HI, and approved April 30, 2012 (received for review March 19, 2012) It has been proposed that fragments of an asteroid or comet (2).
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