Correction of core physical properties and composite depths for Sites 1215-1222 using core-log correlation-derived rebound coefficients

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doi: 10.2973/odp.proc.sr.199.208.2006
Author(s): Rea, Brice R.; Gaillot, Philippe
Ocean Drilling Program, Leg 199, Shipboard Scientific Party, College Station, TX
Author Affiliation(s): Primary:
University of Leicester, Department of Geology, Leicester, United Kingdom
Other:
Boise State University, United States
Florida State University, United States
Stockholm University, Sweden
University of New Orleans, United States
Stanford University, United States
CNRS-ISTEEM, France
Indiana University of Pennsylvania, United States
University of Michigan, United States
Ruhr Universität Bochum, Federal Republic of Germany
Rutgers-State University of New Jersey, United States
Kyushu University, Japan
Shimane University, Japan
Woods Hole Oceanographic Institution, United States
University of Cambridge, United Kingdom
Boston University, United States
Universita "G. D'Annunzio", Italy
University of Leicester, United Kingdom
Ludwig-Maximilians-Universität München, Federal Republic of Germany
University of California at Santa Cruz, United States
University of Utah, United States
University of Edinburgh, United Kingdom
Universite Pau et des Pays de l'Adour, France
Volume Title: Proceedings of the Ocean Drilling Program; scientific results; Paleogene equatorial transect; covering Leg 199 of the cruises of the drilling vessel JOIDES Resolution; Honolulu, Hawaii, to Honolulu, Hawaii; Sites 1215-1222; 23 October-16 December 2001
Volume Author(s): Wilson, Paul A.; Lyle, Mitchell W.; Janecek, Thomas R.; Backman, Jan; Busch, William H.; Coxall, Helen K.; Faul, Kristina; Gaillot, Philippe; Hovan, Steven A.; Knoop, Peter; Kruse, Silke; Lanci, Luca; Lear, Caroline; Moore, Theodore C.; Nigrini, Catherine A.; Nishi, Hiroshi; Nomura, Ritsuo; Norris, Richard D.; Palike, Heiko; Parés, Josep M.; Quintin, Lacie; Raffi, Isabella; Rea, Brice R.; Steiger, Torsten H.; Tripati, Aradhna; Vanden Berg, Michael D.; Wade, Bridget
Source: Proceedings of the Ocean Drilling Program; scientific results; Paleogene equatorial transect; covering Leg 199 of the cruises of the drilling vessel JOIDES Resolution; Honolulu, Hawaii, to Honolulu, Hawaii; Sites 1215-1222; 23 October-16 December 2001, Paul A. Wilson, Mitchell W. Lyle, Thomas R. Janecek, Jan Backman, William H. Busch, Helen K. Coxall, Kristina Faul, Philippe Gaillot, Steven A. Hovan, Peter Knoop, Silke Kruse, Luca Lanci, Caroline Lear, Theodore C. Moore, Catherine A. Nigrini, Hiroshi Nishi, Ritsuo Nomura, Richard D. Norris, Heiko Palike, Josep M. Parés, Lacie Quintin, Isabella Raffi, Brice R. Rea, Torsten H. Steiger, Aradhna Tripati, Michael D. Vanden Berg and Bridget Wade; Ocean Drilling Program, Leg 199, Shipboard Scientific Party, College Station, TX. Proceedings of the Ocean Drilling Program, Scientific Results (CD ROM), Vol.199, 21p. Publisher: Texas A&M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 1096-2514
Note: In English. Data report; available only on CD-ROM in PDF format and on the Web in PDF or HTML. 18 refs.CD-ROM format, ISSN 1096-2514; WWW format, ISSN 1096-7451; illus., incl. 3 tables
Summary: A methodology was developed that can be used to derive rebound coefficients for the correction of rebounded core physical properties (density, porosity, and void ratio) and spliced meters composite depths (mcds) to in situ values. The increasing-with-depth mismatch between logging depths (density curves were used in this instance) and mcd depths are treated as consolidation tests, only somewhat larger. Core physical properties and mcd depths are first corrected for hydraulic rebound (here almost 4 m of offset at 190 meters below seafloor [mbsf]); the remaining offset is attributed to mechanical (porosity) rebound. The offset between the hydraulic rebound-corrected depths and logging depths are used in conjunction with hydraulic rebound-corrected discrete core sample physical properties to obtain rebound coefficients (Cr values) for the nannofossil and radiolarian oozes at Ocean Drilling Program (ODP) Sites 1218 and 1219. Using the nannofossil ooze rebound coefficients, the Site 1218 mcds are corrected upcore from a tie point at 80 mbsf, allowing derivation of a linear compression for the overlying pelagic clay unit. The three relationships derived from these two sites can then be used to correct the core physical properties and mcds for the other sites cored during ODP Leg 199. The corrected Site 1219 spliced density curve is presented as an example of this process. This method can also be applied to other ODP and Deep Sea Drilling Project sites where unlithified pelagic sediments were cored, a stratigraphic splice can be/has been constructed, and downhole logging was undertaken. Using this approach, it may be possible to produce locally to regionally applicable rebound-correction relationships for a number of pelagic sediments.
Year of Publication: 2006
Research Program: ODP Ocean Drilling Program
Key Words: 07 Marine Geology and Oceanography; Consolidation; Cores; Correlation; Depth; Downhole methods; Equatorial Pacific; Leg 199; Marine sediments; Mechanical properties; ODP Site 1215; ODP Site 1216; ODP Site 1217; ODP Site 1218; ODP Site 1219; ODP Site 1220; ODP Site 1221; ODP Site 1222; Ocean Drilling Program; Ocean floors; Pacific Ocean; Physical properties; Porosity; Sediments
Coordinates: N074500 N260500 W1350000 W1480000
Record ID: 2007028668
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