Background

Ocean Drilling Program Hole 910D was drilled on the crest of the southern Yermak Plateau at 80°15.881'N, 6°65.424'E, in 567.7 m water depth. This hole consists of three cores recovered with the advanced hydraulic piston corer (APC) and 15 cores recovered with the extended core barrel (XCB)...

Full description

Bibliographic Details
Main Authors: Frank R. Rack, Rustan Finndin, Kate Moran
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.508.5488
http://www-odp.tamu.edu/publications/151_SR/VOLUME/CHAPTERS/sr151_21.pdf
Description
Summary:Ocean Drilling Program Hole 910D was drilled on the crest of the southern Yermak Plateau at 80°15.881'N, 6°65.424'E, in 567.7 m water depth. This hole consists of three cores recovered with the advanced hydraulic piston corer (APC) and 15 cores recovered with the extended core barrel (XCB), penetrating to a total depth of 160.6 meters below sea floor (mbsf). Three ear-lier holes were drilled at this site, but two of them (Holes 910A and 910B) failed to penetrate through a stiff horizon at about 20-24 mbsf, and a third hole (Hole 9IOC), drilled using the rotary core barrel (RCB), yielded poor core recovery in the upper 200 mbsf. As a first step in the study of individual core sections from Hole 910D, non-destructive, whole-core X-ray examinations were performed at the Atlantic Geoscience Center of the Bedford Institute of Oceanography in Dartmouth, Nova Scotia, Can-ada. Using a high-resolution video monitor, X-ray images of almost 96 m of core were visually examined and described; these X-ray images were simultaneously recorded on video tape for further digital processing and interpretation. Videotaped X-ray images of the Hole 910D core sections have been used to identify the relative position and size of indi-vidual clasts (>2 mm in diameter) and coarse sand layers, and to identify extensively bioturbated intervals, represented by bur-row traces in these cores. Solid particles>2 mm in diameter, were counted for successive 10-cm intervals of core using the video X-ray images. The X-ray images provide "ground truth " for making comparisons with other nondestructive measure-ments made on these cores using sensors mounted on the multisensor track (MST), and for identifying changes in depositional environments at this site.