Distribution of major and trace elements of a sediment core from the eastern Arabian Sea and its environmental significance

被引：0

作者：

Sruthi, K. V. ^{[1
]}

Kurian, P. J. ^{[1
]}

Rajani, P. R. ^{[1
]}

机构：

[1] Natl Ctr Antarctic & Ocean Res, Headland Sada 403804, Goa, India

来源：

CURRENT SCIENCE | 2014年 / 107卷 / 07期

关键词：

Fluvial input; Holocene; major and trace element chemistry; upwelling; LATE QUATERNARY; SURFACE SEDIMENTS; OXYGEN MINIMUM; GEOCHEMISTRY; MONSOON; PRODUCTIVITY; HOLOCENE; METALS; CLIMATE; SLOPE;

D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A sediment core recovered from the southeastern Arabian Sea off the Indian subcontinent was analysed to understand the distribution of major (Fe, K, Mg, Al, Ca and Sr) and trace elements (Mn, Ni, Cu and Co) as well as their environmental significance. According to the results, variation of Fe, K, Mg and Al during early Holocene period is reflective of the strengthened southwest monsoon and resulting fluvial input of terrigenous materials to the study region. The concentration profile of Ca, Sr and total organic carbon during late Holocene reveals increased productivity and coastal upwelling during recent periods. The profile of redox-sensitive metals indicates the role of terrigenous sources in the variation of these elements apart from the scavenging-releasing effects of Fe-Mn-oxides/hydroxides as well as decrease in oxygen level in sediment-water interface from early Holocene to late Holocene period. The study suggests that two factors are predominantly responsible for observed geochemical variations-terrigenous and biological contribution.

引用

页码：1161 / 1167

页数：7

共 39 条

[11] ASSESSMENT OF ELEMENTAL CONTAMINATION IN ESTUARINE AND COASTAL ENVIRONMENTS BASED ON GEOCHEMICAL AND STATISTICAL MODELING OF SEDIMENTS [J].

HANSON, PJ ;

EVANS, DW ;

COLBY, DR ;

ZDANOWICZ, VS .

MARINE ENVIRONMENTAL RESEARCH, 1993, 36 (04) :237-266

[12] THE EFFECT OF MINING ON THE SEDIMENT TRACE-ELEMENT GEOCHEMISTRY OF CORES FROM THE CHEYENNE RIVER ARM OF LAKE OAHE, SOUTH-DAKOTA, USA [J].

HOROWITZ, AJ ;

ELRICK, KA ;

CALLENDER, E .

CHEMICAL GEOLOGY, 1988, 67 (1-2) :17-33

[13] Variations in tropical convection as an amplifier of global climate change at the millennial scale [J].

Ivanochko, TS ;

Ganeshram, RS ;

Brummer, GJA ;

Ganssen, G ;

Jung, SJA ;

Moreton, SG ;

Kroon, D .

EARTH AND PLANETARY SCIENCE LETTERS, 2005, 235 (1-2) :302-314

[14]

Jayakumar D. A., 1999, THESIS GOA U, P157

[15]

KOLLA V, 1981, J SEDIMENT PETROL, V51, P563

[16] SURFICIAL SEDIMENTS OF THE ARABIAN SEA [J].

KOLLA, V ;

RAY, PK ;

KOSTECKI, JA .

MARINE GEOLOGY, 1981, 41 (3-4) :183-204

[17] Rock magnetic records of the sediments of the eastern Arabian Sea: Evidence for late Quaternary climatic change [J].

Kumar, AA ;

Rao, VP ;

Patil, SK ;

Kessarkar, PM ;

Thamban, M .

MARINE GEOLOGY, 2005, 220 (1-4) :59-82

[18] CENOZOIC SEDIMENTATION HISTORY OF THE CENTRAL NORTH PACIFIC - INFERENCES FROM THE ELEMENTAL GEOCHEMISTRY OF CORE LL44-GPC3 [J].

KYTE, FT ;

LEINEN, M ;

HEATH, GR ;

ZHOU, L .

GEOCHIMICA ET COSMOCHIMICA ACTA, 1993, 57 (08) :1719-1740

[19] BOUNDARY SCAVENGING AND DEEP-SEA SEDIMENT DATING: CONSTRAINTS FROM EXCESS Th-230 AND Pa-231 [J].

Lao, Yong ;

Anderson, Robert F. ;

Broecker, Wallace S. .

PALEOCEANOGRAPHY, 1992, 7 (06) :783-798

[20] Early- to late-Holocene contrast in productivity, OMZ intensity and calcite dissolution in the eastern Arabian Sea [J].

Naik, Sushant S. ;

Godad, Shital P. ;

Naidu, P. Divakar ;

Tiwari, Manish ;

Paropkari, Anil L. .

HOLOCENE, 2014, 24 (06) :749-755

← 1 2 3 4 →