Heinrich layer in Antarctic marine sediments and its significance to global changes |
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Authors: | Hongrning Hou Youlang Luo Honghan Zheng Baogui Wang Xianzan Tang |
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Institution: | (1) South China Sea Institute of Oceanology, Chinese Academy of Sciences, 510301 Guangzhou, China;(2) Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640 Guangzhou, China |
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Abstract: | Results of grain size analysis and rock magnetic measurements of core NP95-1 from Prydz Bay, Antarctica revealed two series
of ice-rafted detritus layers, which correspond to cold climatic events, Younger Dryas and Heinrich event 1, occurring at
about 11.7-10.3 and 14.3-13.6 kaB.P. respectively. Studies also show that the sequence of paleoclimatic changes in Antarctica
can be correlated with that in other parts of the world, and that the millennia1 climate of the earth could change synchronously
and globally. In addition, magnetic fabric analysis also shows a close relationship between paleoclimatic change and ocean
circulation re-assemblage. |
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Keywords: | Antarctica Heinrich layer global change ice-rafted detritus marine sediments |
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