32. DATA REPORT: ¹⁴C DATING OF SEDIMENT OF THE UPPERMOST CAPE FEAR SLIDE PLAIN: CONSTRAINTS ON THE TIMING OF THIS MASSIVE SUBMARINE LANDSLIDE¹

Nancy M. Rodriguez^{2, 3} and Charles K. Paull^{2, 4}

ABSTRACT

Six ¹⁴C-age measurements of the carbonate fraction of sediments sampled from Ocean Drilling Program (ODP) Leg 164 Site 991 are reported. These samples straddle the most recent sole of the Cape Fear Slide. These data indicate that a hiatus occurs at 2.06 mbsf that separates sediments with ¹⁴C ages 10 ka from those with ages 26.9 ka. The hiatus corresponds with a stratigraphic boundary between soft, undisturbed sediment above and firmer, yet disturbed sediment below, and is believed to correspond with the most recent activity on the slide.

¹Paull, C.K., Matsumoto, R., Wallace, P.J., and Dillon, W.P. (Eds.), 2000. Proc. ODP, Sci. Results, 164: College Station, TX (Ocean Drilling Program).
²Department of Geology, Mitchell Hall, CB #3315, University of North Carolina, Chapel Hill, NC 27599-3315, U.S.A.
³Present address: Exxon Exploration Company, P.O. Box 4778, Houston, TX 77210-4778, U.S.A. nmrodriguez@mindspring.com
⁴Present address: Monterey Bay Aquarium Research Institute, 7700 Sandholdt Road, Moss Landing, CA 95039-0628, U.S.A.

Date of initial receipt: 21 April 1998
Date of acceptance: 13 October 1998
Ms 164SR-244