Thermal and Hydrothermal Alteration of Conodonts from Target Bedrock and Impact Breccias From the Haughton Impact Structure, Devon Island, Nunavut, Canada

AND IMPACT BRECCIAS FROM THE HAUGHTON IMPACT STRUCTURE, DEVON ISLAND, NUNAVUT, CANADA. C. E. Mason, J. E. Repetski, W. C. Smith, P. Lindgren, J. Parnell, P. Lee, Department of Physical Sciences, Morehead State University, Morehead, KY 40351, c.mason@morehead-st.edu, U.S. Geological Survey, MS 926A National Center, Reston, VA 20192, Department of Geology and Petroleum Geology, University of Aberdeen, Aberdeen AB24 3UE, UK, Mars Institute, SETI Institute, NASA Ames Research Center, Moffett Field, CA 94035-1000.