georefid:2001-002894georefid:2001-002879SEDIS Publication Catalogue

ana.macario@awi.de

http://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.2973/odp.proc.sr.166.127.20002000-01-01publicationgeorefid:2001-002894doi:10.2973/odp.proc.sr.166.127.2000Kroon, DickUniversity of Edinburgh, Department of Geology and Geophysics, Edinburgh, United KingdomauthorWilliams, TrevorOcean Drilling Program, United StatesauthorPirmez, CarlosGeological Survey of Japan, JapanauthorSpezzaferri, S.Johann Wolfgang Goethe-Universitaet, Federal Republic of GermanyauthorSato, TokiyukiUniversity of South Carolina, United StatesauthorWright, James D.University of Hawaii, United StatesauthorTexas A & M University, Ocean Drilling Program, College Station, TX, United StatespublisherdocumentDigitalIn: Swart, Peter K., Eberli, Gregor P., Malone, Mitchell J., Anselmetti, Flavio S., Arai, Kohsaku, Bernet, Karin H., Betzler, Christian, Christensen, Beth A., De Carlo, Eric Heinen, Dejardin, Pascale M., Emmanuel, Laurent, Frank, Tracy D., Haddad, Geoffrey A., Isern, Alexandra R., Katz, Miriam E., Kenter, Jeroen A. M., Kramer, Philip A., Kroon, Dick, McKenzie, Judith A., McNeill, Donald F., Montgomery, Paul, Nagihara, Seiichi, Pirmez, Carlos, Reijmer, John J. G., Sato, Tokiyuki, Schovsbo, Niels H., Williams, Trevor, Wright, James D., Lowe, Ginny (editor), Proceedings of the Ocean Drilling Program, scientific results, Bahamas Transect; covering Leg 166 of the cruises of the drilling vessel JOIDES Resolution, San Juan, Puerto Rico, to Balboa Harbor, Panama, sites 1003-1009, 17 February-10 April 1996166155-166Detailed biostratigraphy in Site 1006 based on planktonic foraminifers and nannofossils shows large-scale sedimentation rate variability in the Florida Strait west of the Great Bahama Bank. A "floating" cyclostratigraphy based mainly on resistivity logs and magnetic susceptibility data has been fixed to the biostratigraphy in the absence of magnetostratigraphy. The strongest orbital cycle present is the precessional beat, which is present in the borehole logs throughout the record. Counting the cycles resulted in an accurate time scale and thus a sedimentation rate time series. Spectral analysis of the sedimentation rate time series shows that the short-term cycle of eccentricity ( approximately 125 k.y.) and the long term cycle of eccentricity ( approximately 400 k.y.) are pervasive throughout the Miocene record, together with the long-term approximately 2-m.y. eccentricity cycle. The Great Bahama Bank produced pulses of shallow carbonate input once every precessional (sea level) cycle during the Miocene and perhaps two pulses per cycle in the early Pliocene. The amount of sediment exported in these pulses appears to be controlled by eccentricity modulation of the precessional amplitude and therefore the amplitude of the sea-level rise. Finally, an increase in sedimentation rate just after the Miocene/Pliocene boundary is attributed to a change in the location and strength of sediment drift currents in the Florida Strait due to reorganization of the currents following the closure of the Panama Isthmus.completedStratigraphyalgaeAtlantic Oceanbiostratigraphybiozonescarbonate sedimentscarbonatesCaribbean SeaCenozoicclimate changeclimate forcingcyclescyclostratigraphyeccentricityForaminiferafrequencyGreat Bahama BankInvertebrataLeg 166lower Pliocenemarine sedimentsmicrofossilsmiddle MioceneMiocenenannofossilsNeogeneNorth AtlanticOcean Drilling ProgramODP Site 1006orbital forcingpaleoclimatologyplanktonic taxaPlantaePlioceneprecessionProtistasedimentationsedimentation ratessedimentsStraits of FloridaTertiaryurn:org.iodp:exp:166urnlargerWorkCitationcampaignurn:org.iodp:exp:166:site:1006urnlargerWorkCitationstudyurn:org.iodp:exp:166urnlargerWorkCitationcampaignEnglishgeoscientificInformation-79.2733-79.273324.235924.2359application/pdfunknownSEDIS Publication Catalogue

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