Calcareous nannofossil bioevents and microtektite stratigraphy in the Western Philippine Sea during the Quaternary

Calcareous nannofossil bioevents and microtektite stratigraphy in the Western Philippine Sea during the Quaternary
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第四纪西菲律宾海钙质超微化石生物事件和微玻璃地层

DOI:
10.1007/s11434-011-4603-z
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发表时间:
2011-09
影响因子:
--
通讯作者:
Tang Zheng
Tang Zheng
中科院分区:
--
文献类型:
--
作者:
Sun Hanjie;Li Tiegang;Sun Rongtao;Yu Xinke;Chang Fengming;Tang Zheng

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对两个沉积岩芯(MD 06 -3050和MD 06 -3047)进行了分析,以研究第四纪钙质超微化石和微玻璃陨石记录。通过氧同位素地层学标定,确定了生物事件和微玻璃陨石撞击事件的年代。在过去的2.36 Ma中,共鉴定出7个钙质超微化石生物事件,包括Discoaster brouweri、Calcidiscus macintyrei、largeGephyrocapsa和Pseudoemiliania lacunosa的最后一次出现,largeGephyrocapsa和Emiliania huxleyi的首次出现,以及Gephyrocapsa caribbeanica丰度的突然增加。此外,我们还幸运地观察到澳大利亚微玻璃陨石分布在1340 - 1374 cm的MD 06 -3050孔中。
Two sediment cores, MD06-3050 and MD06-3047, were analyzed to study the Quaternary calcareous nannofossil and microtektite records. We dated bioevents and the microtektite impact event by calibrating with oxygen isotope stratigraphy. Seven calcareous nannofossil bioevents were identified over the past 2.36 Ma including the last appearance of data forDiscoaster brouweri, Calcidiscus macintyrei, largeGephyrocapsaandPseudoemiliania lacunosa, the first appearance of data for largeGephyrocapsaandEmiliania huxleyi, and the abrupt increase in the abundance ofGephyrocapsa caribbeanica. In addition, we fortunately observed that Australasian microtektites were distributed in core MD06-3050 from 1340 to 1374 cm.
DOI: 10.1007/bf02875247
发表时间: 1999-09
期刊: Science in China Series D: Earth Sciences
影响因子: --
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