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- W2369586302 abstract "Strata of Core PD in the Changjiang Delta with a core length of 320 m are primarily composed of lacustrine, fluvial, littoral and deltaic sedimentary facies. Compositions of organic elements (total organic carbon and total nitrogen; TOC and TN) and CaCO3 show large but somewhat regular variations in the core. East China was relatively warm and wet in the late Neogene and paleo-lakes well developed. However, organic matters decomposed to a great extent and yielded poor reservation in the sediment because of sulfate reducing action. In the early Pleistocene, the paleoclimate changed considerably and the higher plants developed in the Changjiang drainage basin. In the middle and late Pleistocene the Changjiang basin gradually became colder and dryer with large paleoclimate variability and great changes of the plant types. With the onset of Holocene, the paleoclimate turned warm and wet and organic matters were well preserved in the sediments. Late Cenozoic paleoclimatic changes in the Changjiang valley reconstructed by compositions of organic elements and CaCO3 can be well correlated with the pollen spore observations, and be also teleconnected with inland researches. However, Quaternary paleo-environmental reconstruction by using organic elemental and carbonate compositions should be prudent due to complicated influences of strata continuity, grain size composition, sources of organic matter, and post-depositional changes. More work including organic carbon isotope and/or biomarker analyses are urgently needed to improve our understanding of paleoenvironmental changes in East China and the Changjiang drainage basins." @default.
- W2369586302 created "2016-06-24" @default.
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- W2369586302 date "2006-01-01" @default.
- W2369586302 modified "2023-09-25" @default.
- W2369586302 title "Compositions of organic elements and carbonate in the late Cenozoic sediments of the Changjiang Delta: Implication for paleoenvironmental changes" @default.
- W2369586302 hasPublicationYear "2006" @default.
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