Paleoenvironment evolution of the East Philippine Sea recorded in the new-type ferromanganese crust since the terminal Late Miocene
Paleoenvironment evolution of the East Philippine Sea recorded in the new-type ferromanganese crust since the terminal Late Miocene
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新型铁锰结壳记录的晚中新世末期以来的东菲律宾海古环境演化
DOI:
10.1007/s11430-007-0054-4
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发表时间:
2007-08
期刊:
影响因子:
--
通讯作者:
Meng QingYong
中科院分区:
文献类型:
--
作者:
Li AnChun;Xu ZhaoKai;Jin Ning;Jiang FuQing;Li TieGang;Meng QingYong
From systemic research of microstructure, geochemistry, uranium-series and10Be isotope dating on a new-type deepwater ferromanganese crust from the East Philippine Sea, the paleoenvironment evolution of the target area since the terminal Late Miocene was recovered. The vertical section changes of microstructure and chemical composition are consistent in the studied crust, which indicate three major accretion periods and corresponding paleoenvironment evolution of the crust. The bottom crust zone was formed in the terminal Late Miocene (5.6 Ma) with loose microstructure, high detritus content and high growth rate. Reductions of mineral element content, accretion rate and positive Ce-anomaly degree at 4.6 Ma indicate temporal warming, which went against the crust accretion and finally formed an accretion gap in the terminal Middle Pliocene (2.8–2.7 Ma). The more active Antarctic bottom seawaters in the Late Pliocene (2.7 Ma) facilitated the fast transfer to the top pure crust zone. Hereafter, with the further apart of volcanic source and the keeping increase of eolian material (1.0 Ma), although surrounding conditions were still favorable, mineral element content still shows an obvious reducing trend. It thereby offers new carrier and data for the unclear paleoceanographic research of the target area since the terminal Late Miocene.
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DOI:
10.1201/9780429070884-9
发表时间:
1997-08
期刊:
--
影响因子:
--
作者:
X. Dongyu
通讯作者:
X. Dongyu
DOI:
--
发表时间:
2003
期刊:
Marine Geology & Quaternary Geology
影响因子:
--
作者:
C. Jun
通讯作者:
C. Jun
影响因子:
5.3
作者:
V. Banakar;A. Galy;N. Sukumaran;G. Parthiban;A. Y. Volvaiker
通讯作者:
V. Banakar;A. Galy;N. Sukumaran;G. Parthiban;A. Y. Volvaiker
DOI:
10.1360/yd1998-41-3-282
发表时间:
1998-05
期刊:
Science in China Series D: Earth Sciences
影响因子:
--
作者:
Z. Quanhong;R. Whatley
通讯作者:
Z. Quanhong;R. Whatley
DOI:
10.2973/dsdp.proc.59.127.1981
发表时间:
1981
期刊:
--
影响因子:
--
作者:
M. R. Scott;G. Bolger
通讯作者:
M. R. Scott;G. Bolger