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Mn/Ca ratio in planktonic foraminifer from ODP Site 1144, the northern South China Sea: A possible paleoclimate indicator
planktonic foraminifer Mn/Ca ratios paleoclimate proxy South China Sea ODP
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2017/8/9
We report here high-resolution Mn/Ca ratios of planktonic foraminifer, Globigerinoides sacculifer from ODP Site 1144 in the northern South China Sea (SCS). The variation pattern of the Mn/Ca ratios of...
ODP 1143站最上部的3层火山灰深度(mcd)分别为5.55 m(本文称之为A层)、42.66 m(B层)、48.25 m(C层), 其厚度均为~2 cm. 微古生物资料初步限定它们的年龄分别为~0.07 Ma、~0.80 Ma和~1.0 Ma. 这些火山灰层主要由70~150 μm的火山玻璃碎屑组成. 电子探针分析结果的对比表明, 这3层火山灰分别与Toba第四纪3次火山喷发物(YTT, O...
南海北部陆坡ODP 1144站位第四纪硅藻及其古环境演变
古环境 第四纪 硅藻 丰度值
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2010/9/3
中国南海北部陆坡ODP 1144站位硅藻植物群的研究，建立了西太平洋边缘海一个新的中更新世晚期以来的硅藻生物地层图式，根据硅藻化石中具有指示意义的硅藻种的分布和生态变化（暖水种和冷水种），划分了8个硅藻组合带，其硅藻组合带分别在不同的高低海面环境下形成的，根据ODP1144站位氧同位素（OIS）测定结果，8个硅藻组合带与OIS 1－8期相对应。1、3、5、7硅藻组合带相当于OIS1、3、5、7期，...
A Deep-Water Glauconitization Process on the Ivory Coast-Ghana Marginal Ridge (ODP Site 959): Determination of Fe3+-Rich Montmorillonite in Green Grains
Eastern Atlantic Fe3+-rich Montmorillonite Foraminifer Fillings Glauconitization Green Clay Pleistocene
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2011/12/5
Abstract: The mineral and chemical composition of green glauconitic grains from ODP Site 959 (2100 m water depth) located on the northern flank of the Ivory Coast-Ghana Marginal Ridge was studied. Rec...
Microfabric of Altered Ash Layers, ODP LEG 131, Nankai Trough
Accretionary prism Alteration Ash Microfabric Nankai Trough Physical properties Porosity
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2011/12/29
Samples of ash layers and associated background sediments from Site 808 of ODP Leg 131 in the Nankai Trough accretionary prism were analyzed for changes in mineralogy, porosity and microfabric associa...