11 research outputs found

    Austauschprozesse zwischen Kruste und Ozean. SONNE-Forschungsfahrt SO-105. Teilprojekt 2: Seismo-stratigraphische Untersuchungen am Ostpazifischen Ruecken suedlich der Garrett-Bruchzone (13 -16 S) Abschlussbericht

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    SIGLEAvailable from TIB Hannover: F98B819+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

    Fahrtbericht ueber die Sonne-Expedition 105 - EXCO Austauschprozesse zwischen Kruste und Ozean. Valparaiso - Balboa, 8. November - 30. Dezember 1995

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    Summary in EnglishAvailable from TIB Hannover: RR 9349(1) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

    SO 115B-SUNDAFLUT: Seismo-Stratigraphie. Seismo-stratigraphische Untersuchungen des noerdlichen Sunda-Schelfes, suedliches Suedchinesisches Meer Endbericht

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    Eight generally wedge-shaped seismic sequences interpretable as prograding lowstand wedges deposited during forced regressions were recognized on the outer Sunda Shelf. The highstand systems tracts are in contrast largely missing. Seven seismic facies types and 11 sediment echo character types have been identified. They divide the outer shelf into facies or acoustic provinces and characterize the sedimentation processes in each province. The corrected depth of the lowermost onlap in each sequence marks the depth of the depositional base level below present-day sea level when that sequence was deposited. This basal level is assumed to be at or near the paleo-sea level, depending on whether current and wave erosion as well as tidal scouring have been effective. A correlation of these corrected onlap depths with the stacked Specmap curve and a #delta#"1"8O curve from the Sulu Sea permits speculative age estimates of the sea level lowstands and the sequence boundaries. According, the sequence onlaps probably correspond to sea level lowstands during oxygen isotope stages 6, 8, 10, 12, 14 and 16. Sequence 4 is probably deposited in the course of a minor sea level fluctuation during the regression from stage 11 to 10. The computed average lowstand sedimentation rates (75-200 cm/ka) based on these age estimates are comparable to the present-day rates. They represent underestimates of the lowstand rates. The development of the Late Quaternary sea level on the northern Sunda Shelf parallels that of the Sulu Sea. However, our sea level values lie generally 10-40 m below those for the Sulu Sea and may imply that either erosion has lowered the depositional base level by about this amount or that tectonic subsidence beyond that accounted for in our fault corrections has occurred. (orig.)SIGLEAvailable from TIB Hannover: F99B787 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman
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