TRACKING PREHISTORIC CASCADIA TSUNAMI DEPOSITS AT NESTUCCA BAY, OREGON Final Technical Report U.S. Geological Survey Award No. 08HQGR0076 November 2009 By Robert C. Witter, Eileen Hemphill-Haley, Roger Hart and Lindsey Gay Oregon Department of Geology and Mineral Industries Coastal Field Office, 313 SW 2nd, Suite D Newport, Oregon 97365 FINAL TECHNICAL REPORT TRACKING PREHISTORIC CASCADIA TSUNAMI DEPOSITS AT NESTUCCA BAY, OREGON Recipient: Oregon Department of Geology and Mineral Industries 800 NE Oregon Street, Suite 965, Portland, OR 97232 Phone: 971-673-1544; Fax: 971-673-1562 Principal Investigator: Robert C. Witter1 With Contributions By: Eileen Hemphill-Haley2, Roger Hart1 and Lindsey Gay1 1Oregon Department of Geology and Mineral Industries, Newport Field Office 313 SW 2nd Street, Suite D, Newport, Oregon 97365 Phone: 541-574-6642; Fax 541-265-5241 email:
[email protected] 2Consulting Micropaleontology 1871 Pickett Road, McKinleyville, CA 95519 Phone: 707-840-9554 Keywords: Paleoseismology, Tsunamis, Cascadia subduction zone Program Elements I and II U.S. Geological Survey National Earthquake Hazards Reduction Program Award No. 08HQGR0076 November 4, 2009 Research supported by U.S. Geological Survey (USGS), Department of Interior, under USGS award number 08HQGR0076. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government. NOTICE The results and conclusions of this report are necessarily based on limited geologic and geophysical data. At any given site in any map area, site- specific data could give results that differ from those shown in this report.