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
Geochemistry and provenance of the sediment from the west flank of the spreading southwest Indian Oceanic Ridge(34.9°S)
查看参考文献59篇
|
文摘
|
西南印度洋中脊沉积物来源广泛,是区域海洋环境演化的记录器,对其沉积物特征及物源研究是区域古海洋研究的基础。对采自西南印度洋中脊扩张轴部(34.9°S)西翼的重力柱沉积物样品进行总碳、总有机碳、生物硅、主量元素、微量及稀土元素测试,测试结果显示,样品中生物成因组分为沉积物的主要组成,主要包括碳酸盐和二氧化硅;主微量元素除了Ca、Sr与LOI外,其余元素的分布趋势基本一致,且相关系数基本大于0.8。结合不同生物组分特点进行分析计算,获得了沉积物中各生物组分的含量。去除生物成因组分重新计算了非生物成因元素含量,通过潜在物源及相应地球化学指标对比分析,发现非生物成因组分主要由非洲南部风成陆源物质组成,含少量洋中脊硫化物与结壳物质。 |
|
其他语种文摘
|
The 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. |
|
来源
|
海洋地质与第四纪地质
,2018,38(5):14-29 【核心库】
|
|
DOI
|
10.16562/j.cnki.0256-1492.2018.05.002
|
|
关键词
|
西南印度洋脊
;
地球化学
;
沉积物物源
|
|
地址
|
1.
中国科学院深海科学与工程研究所, 三亚, 572000
2.
国家深海基地管理中心, 青岛, 266237
3.
中国科学院大学, 北京, 100049
4.
国家海洋局第一海洋研究所, 青岛, 266061
5.
同济大学, 上海, 200092
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
0256-1492 |
|
学科
|
海洋学 |
|
基金
|
国家973计划
|
|
文献收藏号
|
CSCD:6359042
|
参考文献 共
59
共3页
|
|
1.
Matsuoka H. 23.A new method to evaluate dissolution of Ca-CO_3 in the deep-sea sediments.
日本古生物学會報告·紀事(新編),1990,1990(157):430-434
|
被引
1
次
|
|
|
|
|
2.
黄大松. 西南印度洋中脊48.6°?51.7°E沉积物地球化学特征.
地质科技情报,2016,35(1):22-29
|
被引
10
次
|
|
|
|
|
3.
陈圆圆. 西南印度洋中脊钙质沉积物地球化学及矿物学特征.
地质科技情报,2013,32(1):107-113
|
被引
9
次
|
|
|
|
|
4.
Kolla V. Calcium carbonate distribution in the surface sediments of the Indian Ocean.
Journal of Geophysical Research,1976,81(15):2605-2616
|
被引
4
次
|
|
|
|
|
5.
Banakar V K. Chemistry of surface sediment along a north-south transect across the equator in the Central Indian Basin:an assessment of biogenic and detrital influences on elemental burial on the seafloor.
Chemical Geology,1998,147:217-232
|
被引
2
次
|
|
|
|
|
6.
Kolla V.
Sedimentation and Sedimentary Processes in the Indian Ocean,1982:1-50
|
被引
1
次
|
|
|
|
|
7.
Li Z. Major and trace element composition of surface sediments from the Southwest Indian Ridge:evidence for the incorporation of a hydrothermal component.
Acta Oceanologica Sinica,2016,35(2):101-108
|
被引
4
次
|
|
|
|
|
8.
Mascarenhas-Pereira M B L. Selective leaching studies of sediments from a seamount flank in the Central Indian Basin:Resolving hydrothermal,volcanogenic and terrigenous sources using major,trace and rare-earth elements.
Marine Chemistry,2010,121(1/4):49-66
|
被引
10
次
|
|
|
|
|
9.
Luyendyk B P.
Results of dsdp leg 26 and the geologic history of the southern indian ocean. Initial Reports of the Deep Sea Drilling Project,1974:26
|
被引
1
次
|
|
|
|
|
10.
Yasukawa K. Rare-earth, major,and trace element geochemistry of deep-sea sediments in the Indian Ocean:Implications for the potential distribution of REY-rich mud in the Indian Ocean.
Geochemical Journal,2015,49(6):621-635
|
被引
10
次
|
|
|
|
|
11.
Wilson D J. Reactivity of neodymium carriers in deep sea sediments:Implications for boundary exchange and paleoceanography.
Geochimica et Cosmochimica Acta,2013,109:197-221
|
被引
4
次
|
|
|
|
|
12.
McCave I N R R S.
Charles Darwin Cruise 129,report,2001
|
被引
1
次
|
|
|
|
|
13.
陶春辉. 西南印度洋脊49°39′E热液区硫化物烟囱体的矿物学和地球化学特征及其地质意义.
科学通报,2011,56:2413-2423
|
被引
25
次
|
|
|
|
|
14.
于淼. 西南印度洋中脊49.6°E和50.5°E区玄武岩岩石学及元素地球化学特征.
现代地质,2013,23(3):497-508
|
被引
9
次
|
|
|
|
|
15.
Tao C. Mineralogical and geochemical features of sulfide chimneys from the 49°39'E hydrothermal field on the Southwest Indian Ridge and their geological inferences.
Chinese Science Bulletin,2011,56(26):2828-2838
|
被引
7
次
|
|
|
|
|
16.
Tao C. First active hydrothermal vents on an ultraslow-spreading center:Southwest Indian Ridge.
Geology,2012,40(1):47-50
|
被引
23
次
|
|
|
|
|
17.
Zeng Z. Factors affecting the rare earth element compositions in massive sulfides from deep-sea hydrothermal systems.
Geochemistry,Geophysics,Geosystems,2015,16(8):2679-2693
|
被引
1
次
|
|
|
|
|
18.
McCave I N. Deep flow in the Madagascar-Mascarene Basin over the last 150000 years.
Philosophical Transactions of the Royal Society of London A:Mathematical,Physical and Engineering Sciences,2005,363(1826):81-99
|
被引
4
次
|
|
|
|
|
19.
Huneke H.
Deep-sea Sediments,2011
|
被引
5
次
|
|
|
|
|
20.
Kolla V. Clay mineralogy and sedimentation in the western Indian ocean.
Deep Sea Research and Oceanographic Abstracts,1976,23(10):949-961
|
被引
7
次
|
|
|
|
|
了解气象卫星更多信息，请访问