Eustatic signals in deep-marine sedimentary sequences recovered at ODP site 978| Alboran basin, western Mediterranean Sea

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dc.contributor.author Marsaglia, Kathleen en_US
dc.contributor.author Fukusawa, Hitoshi en_US
dc.contributor.author Cornell, Winton en_US
dc.contributor.author Meyers, Philip en_US
dc.contributor.author Prasad, Manika en_US
dc.contributor.author Klaus, Adam en_US
dc.contributor.author Skilbeck, Greg en_US
dc.date.accessioned 2009-06-26T04:11:08Z
dc.date.available 2009-06-26T04:11:08Z
dc.date.issued 2004 en_US
dc.identifier 2004000152 en_US
dc.identifier.citation Marsaglia Kathleen et al. 2004, 'Eustatic signals in deep-marine sedimentary sequences recovered at ODP site 978| Alboran basin, western Mediterranean Sea', SEPM-Soc Sedimentary Geology, vol. 74, no. 3, pp. 378-390. en_US
dc.identifier.issn 1527-1404 en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/656
dc.description.abstract A continuous section of Pliocene marine sediments was recovered at Ocean Drilling Program Site 978, located in the Alboran Sea between Spain and Morocco. Three Pliocene subunits have been defined at Site 978: the lowermost (Subunit IC, 129.2 m thick) is characterized by alternating beds of lighter, more calcareous, and darker, less calcareous, claystone with bioturbated upper and lower contacts (Type 1 cycles); the middle (Subunit IB, 67.1 m thick) is composed of relatively homogeneous nannofossil claystone; and the uppermost (Subunit IA, 211.6 m thick) contains abrupt-based darker, terrigenous layers interpreted as turbidites that are interstratified with lighter nannofossil claystone (Type 2 cycles). The rhythmically bedded light and dark layers in Subunit IC correlate with those in the Rosello Composite Section of Sicily, a global reference standard for the Pliocene time scale. These sedimentary cycles are products of variations in precession and resulting continental runoff. Missing cycles occur during eustatic highstands. The shift to more homogeneous sedimentation in Subunit IB is represented in similar-aged sequences throughout the Mediterranean which display evidence of submarine mass wasting. Mediterranean-wide slope degradation was likely a response to rapid sea-level change at approximately 3 Ma. This change in sedimentation style was accompanied by an upsection increase in sediment accumulation rates associated with turbidite influx in Subunit IA. Turbidite frequency throughout the Pliocene section can be linked to eustatic changes in sea level, with turbidite maxima corresponding with mid-sequence downlap surfaces and their associated condensed sections. en_US
dc.publisher SEPM-Soc Sedimentary Geology en_US
dc.relation.isbasedon http://dx.doi.org/10.1306/092403740378 en_US
dc.title Eustatic signals in deep-marine sedimentary sequences recovered at ODP site 978| Alboran basin, western Mediterranean Sea en_US
dc.parent Journal Of Sedimentary Research en_US
dc.journal.volume 74 en_US
dc.journal.number 3 en_US
dc.publocation Tulsa, USA en_US
dc.identifier.startpage 378 en_US
dc.identifier.endpage 390 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 040300 en_US
dc.personcode 0000021917 en_US
dc.personcode 0000021918 en_US
dc.personcode 0000021919 en_US
dc.personcode 870360 en_US
dc.personcode 0000021920 en_US
dc.personcode 0000021921 en_US
dc.personcode 0000021922 en_US
dc.percentage 100 en_US
dc.classification.name Geology en_US
dc.classification.type FOR-08 en_US


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