History of Asian eolian input to the Sea of Japan since 15 Ma: Links to Tibetan uplift or global cooling?
- Shen, Xingyan
- Wan, Shiming
- France-Lanord, Christian
- Clift, Peter
- Tada, Ryuji
- Révillon, Sidonie
- Shi, Xuefa
- Zhao, Debo
- Liu, Yanguang
- Yin, Xuebo
- Song, Zehua
- Li, Anchun
DOIAbstract
International audienceWe present high-resolution analyses of clay mineral assemblages combined with analysis of Sr–Nd–Pb isotopic compositions of the <2 μm silicate fraction of sediments from Integrated Ocean Drilling Program (IODP) Site U1430 in the southern Sea of Japan, in order to trace the sources of clay minerals and reconstruct proxy records of past changes in Asian eolian input to the basin since 15 Ma. The clay mineral assemblages at IODP Site U1430 mainly consist of smectite (∼51%) and illite (∼36%), with minor kaolinite (∼7%) and chlorite (∼6%). Provenance analysis suggests that the fine-grained sediment at the study site is a two end-member mixture of eolian dust from Central Asia and fluvial input from the Japanese islands. The...
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