12. SYNTHETIC SEISMOGRAM GENERATION AND SEISMIC FACIES TO CORE LITHOLOGY CORRELATION FOR SITES 998, 1000, AND 10011

A.D. Cunningham2 and A.W. Droxler3

ABSTRACT

One-dimensional synthetic seismograms are constructed from velocity and density measurements taken during Ocean Drilling Program (ODP) Leg 165 at Sites 998, 1000, and 1001. The synthetic seismograms facilitate correlation of single-channel seismic (SCS) reflection profiles acquired aboard the Cape Hatteras and Maurice Ewing with core lithologies obtained during ODP drilling of the three sites. Visual correlation between the synthetic seismograms and SCS data is generally good. Several high-amplitude reflectors in the seismic data correlate with high-amplitude events in the synthetic seismogram and are the result of changes in velocity and/or density of the cored interval. Variations in SCS facies correlate with changes in core lithologies.

1Leckie, R.M., Sigurdsson, H., Acton, G.D., and Draper, G. (Eds.), 2000. Proc. ODP, Sci. Results, 165 [Online]. Available from World Wide Web: <http://www-odp.tamu.edu/publications/165_SR/165TOC.HTM>. [Cited YYYY-MM-DD]

2BP Amoco, 501 Westlake Park Blvd., Houston, TX 77253-3092, U.S.A. cunninad@bp.com

3Department of Geology and Geophysics, Rice University, 6100 South Main Street, Houston, TX 77005-1892, U.S.A.

Date of initial receipt: 24 June 1998
Date of acceptance: 29 April 1999
Ms 165SR-024

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