de.pangaea.dataset693988 und dataset PANGAEA

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https://www.pangaea.de/ information pointOfContact 2026-05-01T04:35:55Z https://doi.pangaea.de/10.1594/PANGAEA.693988 2005-01-01 publication https://doi.org/10.1594/PANGAEA.693988 Boulay, Sebastien author Colin, Christophe

christophe.colin@universite-paris-saclay.fr

https://orcid.org/0000-0002-3934-5191 information author Trentesaux, Alain author Frank, Norbert

norbert.frank@iup.uni-heidelberg.de

https://orcid.org/0000-0002-0416-9546 information author Liu, Zhifei

lzhifei@tongji.edu.cn

author PANGAEA

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https://www.pangaea.de/ information publisher tableDigital Supplement to: Boulay, Sebastien; Colin, Christophe; Trentesaux, Alain; Frank, Norbert; Liu, Zhifei (2005): Sediment sources and East Asian monsoon intensity over the last 450 ky. Mineralogical and geochemical investigations on South China Sea sediments. Palaeogeography, Palaeoclimatology, Palaeoecology, 228(3-4), 260-277, https://doi.org/10.1016/j.palaeo.2005.06.005 A coupled approach based on clay mineral assemblages and isotopic data (Sr and Nd) of sediment from Ocean Drilling Program (ODP) Site 1145 has been used to trace the sources of sediment feeding the northern part of the South China Sea, and to investigate the evolution of East Asian monsoon intensity over the last 450 ky. Clay mineral assemblages are dominated by illite and smectite, with lesser abundance of chlorite and kaolinite. 87Sr / 86Sr and epsilonNd(0) isotopic data, combined with the smectite / (illite+chlorite) ratio, indicate that the Pearl River is the main contributor for detrital material to the northern margin of the SCS, with variable continental input of volcanic material derived from the erosion of the Luzon Arc. These inputs follow the low-latitude solar insolation with a 23 ky periodicity, as recorded by a periodic change of the clay mineralogy. For the first time, this study presents a SCS deep-sea sediment high-resolution record of climatic changes in the last 450 ky, showing that smectite / (illite+chlorite) variations are mainly related to changes in the East Asian summer monsoon intensity. Because the mineralogical record is independent of other external forcing phenomena such as global glacial/interglacial oscillations, the smectite / (illite+chlorite) ratio has been used here as a proxy to reconstruct past changes of the South-East Asian summer monsoon intensity. completed Boulay, Sebastien principalInvestigator ODP Ocean Drilling Program theme 1995-01-01 creation PANGAEA

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https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-3.0: Creative Commons Attribution 3.0 Unported textTable und geoscientificInformation 117.630966666666 117.630966666666 19.5840166666666 19.5840166666666 1999-03-18T00:00:00 1999-03-21T00:00:00 0.88 70.63 DEPTH, sediment/rock physicalMeasurement m m AGE physicalMeasurement ka BP ka BP Sample code/label thematicClassification DSDP/ODP/IODP sample designation Strontium physicalMeasurement Mass spectrometer Finnigan MAT 262 mg/kg mg/kg Rubidium physicalMeasurement Mass spectrometer Finnigan MAT 262 mg/kg mg/kg Neodymium physicalMeasurement Mass spectrometer Finnigan MAT 262 mg/kg mg/kg Rubidium/Strontium ratio thematicClassification Mass spectrometer Finnigan MAT 262 Strontium-87/Strontium-86 ratio thematicClassification Mass spectrometer Finnigan MAT 262 Strontium-87/Strontium-86 ratio, error physicalMeasurement Mass spectrometer Finnigan MAT 262; 2 sigma ± ± Neodymium-143/Neodymium-144 ratio thematicClassification Mass spectrometer Finnigan MAT 262 Neodymium-143/Neodymium-144 ratio, error physicalMeasurement Mass spectrometer Finnigan MAT 262; 2 sigma ± ± ε-Neodymium (0) thematicClassification Mass spectrometer Finnigan MAT 262 text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.693988?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: 184-1145 * LATITUDE: 19.584017 * LONGITUDE: 117.630967 * DATE/TIME START: 1999-03-18T00:00:00 * DATE/TIME END: 1999-03-21T00:00:00 * ELEVATION: -3175.5 m * PENETRATION: 598.1 m * RECOVERY: 554.7 m * LOCATION: South China Sea * CAMPAIGN: Leg184 * BASIS: Joides Resolution * METHOD/DEVICE: Composite Core 65 cores; 598.1 m cored; 0 m drilled; 92.7% recovery 1999-03-18T00:00:00