Morris, Ron Merritt; Behl, Richard J. (1998): X-ray computed tomography reveals correlation between bioturbated continental slope sediments and global climatic fluctuation. American Association of Petroleum Geologists and Society of Economic Paleontologists and Mineralogists, Tulsa, OK, United States, In: Anonymous, American Association of Petroleum Geologists 1998 annual meeting, 1998, georefid:1999-010423

Abstract:
CAT-scans were taken of the recovered 96% of the 25.5 m core at 5 cm increments, revealing a series of ichnofabric "snapshots" spaced at <300 year intervals. Digital image analysis was used to quantify ellipticity and size trends in the bedding parallel ichnofabrics. Our model proposes that as porewater oxygenation increases, mean burrow orientations shift to become increasingly vertical. Alternately, as dissolved O (sub 2) levels decline, the habitable zone of oxygenation is compressed toward the sediment-water interface; organisms are restricted to less vertical burrow orientations on average, resulting in higher ellipticities in cross-section.
Coverage:
West: -120.0212 East: -120.0211 North: 34.1715 South: 34.1715
Relations:
Expedition: 146
Site: 146-893
Expedition: 167
Site: 167-1017
Data access:
Provider: SEDIS Publication Catalogue
Data set link: http://sedis.iodp.org/pub-catalogue/index.php?id=1999-010423 (c.f. for more detailed metadata)
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