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- W2382827557 abstract "This contribution studied the geochemical characteristics of sediments since the last deglaciation from the East China Sea (ECS), aim to reveal records of paleoenvironment and paleoclimate. Based upon analysis of lithology, grain-size, geochemical and mineral compositions, and AMS 14C dating for Core EC2005, located in the depocenter of Zhejiang-Fujian mud wedge on the inner shelf of the ECS, some principal results and conclusions are summarized as follows. (1) TiO2-normalized values of different major elements of the ECS inner shelf sediment have different environmental and climatic significances. The variation of TiO2-normalized values of SiO2, Na2O can be used as proxies to reconstruct the hydrodynamic conditions. The varied TiO2-normalized values of Al2O3, Fe2O3, MgO, K2O, MnO of the whole core sediment, as well as CaO and P2O5 in the lacustrine sedimentary environment can be used as proxies to reconstruct the sediment sources and climatic changes in the source regions, reflecting the intensity of weathering. (2) The paleoenvironment dramatically changed within the study area since 17. 3 ka BP. A lacustrine delta developed from the bottom 60. 20 m to 41. 00 m (17. 3 - 13. 1 ka BP). The sea water arrived at the study area at 13. 1 ka BP and a 41 m thick marine sediment formed from then on. From 12. 3 ka BP, the study area was influenced by Zhejiang-Fujian Coastal Current (ZFCC) . Since 7. 3 ka BP, the sedimentary environment is dominated by the ZFCC, and the homogeneous mud deposit began to form. (3) From the beginning to the end of the last deglaciation, the overall climate changed towards warm and wet. Worldwide climatic events such as the Younger Dryas episode and the 8. 2 ka event were well recorded in the core, indicating a regional response to important global climatic events at the shallow continental shelf area in the middle latitudes." @default.
- W2382827557 created "2016-06-24" @default.
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- W2382827557 date "2010-01-01" @default.
- W2382827557 modified "2023-09-23" @default.
- W2382827557 title "Geochemical characteristics of sediments on the inner shelf of the East China Sea:Implications for paleoenvironment since the last deglaciation" @default.
- W2382827557 hasPublicationYear "2010" @default.
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