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Alternative TitleGeochemistry and provenance of the sediment from the west flank of the spreading southwest Indian Oceanic Ridge(34.9°S)
林震1; 于洪军2; 徐兴永3; 杨继超2; 易亮4; 付腾飞3; 吕文哲3
Source Publication海洋地质与第四纪地质
Other AbstractThe multi-origin sediments on the southwest Indian Ridge(SWIR)are the archive of environmental evolution of the region.The study of sediment characteristics and provenances founded the basis of paleoceanographic study.In this paper,we analyzed the deep-sea sediment samples from a gravity core sampled at 34.9°S on the spreading SWIR,and a comprehensive data set was constructed for their bulk chemical compositions,including major elements,trace elements,and biocomponents.As the data show,the bulk samples are dominated by bio-components,consisting of high bio-carbonate and low bio-silica.The distribution patterns of major elements are rather accordant.Except for Ca,Sr,and LOI,the correlation coefficient of other major elements are greater than0.8.Based on the properties of bio-components of sediment,we computed the weight percentage of each bio-component.Removed the bio-components from the bulk,we recalculated the weight percentage of non-biotic elements.The data is used as geochemical proxies to study the potential sources.It is found that the abiotic component of the sediment is mainly terrestrial and local origin.The primary source is the aeolian dust from southern Africa,with a small amount of deposits from hydrothermal sulfide and manganese crust.
Keyword西南印度洋脊 地球化学 沉积物物源
Indexed ByCSCD
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Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
First Author AffilicationInstitute of Deep-sea Science and Engineering,CAS
Recommended Citation
GB/T 7714
林震,于洪军,徐兴永,等. 西南印度洋中脊扩张轴部(34.9°S)西翼沉积物地球化学分析及物源探讨[J]. 海洋地质与第四纪地质,2018,38.0(005):14-29.
APA 林震.,于洪军.,徐兴永.,杨继超.,易亮.,...&吕文哲.(2018).西南印度洋中脊扩张轴部(34.9°S)西翼沉积物地球化学分析及物源探讨.海洋地质与第四纪地质,38.0(005),14-29.
MLA 林震,et al."西南印度洋中脊扩张轴部(34.9°S)西翼沉积物地球化学分析及物源探讨".海洋地质与第四纪地质 38.0.005(2018):14-29.
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