BIOGENETIC BARIUM DISTRIBUTION IN EQUATORIAL NORTHEASTERN PACIFIC SEDIMENTS

NI Jian-yu; ZHANG Mei; ZHOU Huai-yang

2006 Vol. 26, No. 2

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NI Jian-yu, ZHANG Mei, ZHOU Huai-yang. BIOGENETIC BARIUM DISTRIBUTION IN EQUATORIAL NORTHEASTERN PACIFIC SEDIMENTS[J]. Marine Geology & Quaternary Geology, 2006, 26(2): 49-54.

Citation:

NI Jian-yu, ZHANG Mei, ZHOU Huai-yang. BIOGENETIC BARIUM DISTRIBUTION IN EQUATORIAL NORTHEASTERN PACIFIC SEDIMENTS[J]. Marine Geology & Quaternary Geology, 2006, 26(2): 49-54.

BIOGENETIC BARIUM DISTRIBUTION IN EQUATORIAL NORTHEASTERN PACIFIC SEDIMENTS

1 Key Laboratory of Submarine Geosciences, State Oceanic Administration, Hangzhou 310012, China;
2 Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China

Received Date: 07 May 2005

Revised Date: 12 September 2005

Abstract

Abstract

Ba, Ti, Al and organic carbon contents of sediments from the abyssal Equatorial Northeastern Pacific were analyzed by ICP-AES and Elements Analyzer respectively. The Ba content varied between 0.198% and 0.792%. Biogenic barium(Babio) calculated using normative calculation varied between 0.162% and 0.764%, which was up to 81.6% and 96.5% of total barium in the sediments. The Babio distributions in sediment profile show little variation in the upper sections,but large variations in lower sections. This suggests that the sediment setting perhaps changed since Tertiary in the region. The organic carbon(Corg) contents varied between 0.18% and 0.58%, and decreased with sediment depth increasing. The Babio/Ti ratio in eastern zone sediments is higher than that of western zone. The Babio/Ti ratio also decreased with latitude increasing in the area. The Corg/Ti ratio and Babio/Ti ratio display negative correlation,suggesting that there is little obvious correlation between surface oceanic nutrition level and Babio contents of sediments in the region. So we should pay more attention to the application of biogenetic barium to paleoproductivity research.
- biogenetic barium /
- organic carbon /
- Equatorial Northeastern Pacific

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References

[1]	Dymond J, Suess E, Lyle M. Barium in deep-sea sediment:a geochemical proxy for paleoproductivity[J]. Paleoceanography, 1992, 7(2):163-181. Google Scholar
[2]	Francois R, Honjo S, Manganini S J, et al. Biogenic barium fluxes to the deep sea:implications for paleoproductivity reconstruction[J]. Global Biogeochemical Cycles, 1995, 9(2):289-303. Google Scholar
[3]	Dehairs F, Fagel N, Antiam A N,et al. Export production in the Gulf of Biscay as estimated from barium-barite in settling material:A comparison with new production[J]. Deep-Sea Res. I, 2000,47:583-601. Google Scholar
[4]	Paytan A, Kasten M, Chavez F P. Glacial to interglacial fluctuations in productivity in the equatorial Pacific as indicated by marine barite[J]. Science, 1996, 274:1355-1357. Google Scholar
[5]	Nurnberg C C, Bohrmann G, Schulter M. Barium accumulation in the Atlantic sector of the Southern Ocean:results from 190000-year records[J]. Paleoceanography, 1997, 12(4):594-603. Google Scholar
[6]	Schroeder J O, Murray R W, Leinen M,et al. Barium in equatorial Pacific carbonate sediment:Terrigenous, oxide, and biogenic associations[J]. Paleoceanography, 1997, 12:125-146. Google Scholar
[7]	Jeandel C, Tachikawa K, Bory A, et al. Biogenic barium in suspended and trapped material as a tracer of export production in the tropical NE Atlantic EUMELI sites[J]. Mar. Chem., 2000, 71:125-142. Google Scholar
[8]	Pfeifer K, Kasten S, Hensen C,et al. Reconstruction of primary productivity from the barium contents in the surface sediments of the South Atlantic Ocean[J]. Mar. Geol., 2001, 177:13-24. Google Scholar
[9]	Dehairs F, Chesselet R, Jedwab J. Discrete suspended particles of barite and the barium cycle in the open ocean[J]. Earth and Planetary Science Letters,1980, 49:528-550. Google Scholar
[10]	Gingele F, Dahmmke A. Discrete barite particles and barium as tracers of paleoproductivity in South Atlantic sediments[J]. Paleoceanography, 1994, 9(1):151-168. Google Scholar
[11]	Bernstein R E, Byrne R H, Schijf J. Acantharians:a missing link in the oceanic biogeochemistry of barium[J]. Deep-Sea Res. I, 1998, 45:491-505. Google Scholar
[12]	Schmitz B. Barium, equatorial high productivity, and the northward wandering of the Indian continent[J]. Paleoceanography, 1987, 2(1):63-77. Google Scholar
[13]	Taylor S R, McLennan S M. The Continental Crust:Its Composition and Evolution[M].Blackwell,Oxford, 1985:312. Google Scholar
[14]	Murray R W, Leinen M. Scavenged excess aluminum and its relationship to bulk titanium in biogenic sediment from the central equatorial Pacific Ocean[J]. Geochimica Cosmochimica Acta, 1996, 60(20):3869-3878. Google Scholar
[15]	Dymond J, Collier R, McManus J, et al. Can the aluminum and titanium contents of ocean sediments be used to determine the paleoproductivity of the ocean?[J].Paleoceanography, 1997, 12(4):586-593. Google Scholar
[16]	倪建宇,周怀阳,潘建明,等.中国多金属结核开辟区沉积物地球化学特征[J]. 海洋学报,2001,23(6):94-100. Google Scholar [NI Jian-yu, ZHOU Huai-yang, PAN Jian-ming, et al. Geochemical characteristics of sediments from China Pioneer Area equatorial northeast Pacific Ocean[J]. Acta Oceanologica Sinica, 2001, 23(6):94-100.] Google Scholar
[17]	王汝建,叶瑛,周怀阳,等. 热带东太平洋短柱样的放射虫地层学研究[J]. 微体古生物学报, 2004, 21:227-336.[WANG Ru-jian, YE Ying, ZHOU Huai-yang, et al. Radiolarian stratigraphy of three short cores in the tropical east Pacific Ocean[J]. Acta Micropalaeontologica Sinica, 2004 Google Scholar , 21:227-336.] Google Scholar
[18]	Jeong K S, Kang J K, Chough S K. Sedimentary processes and manganese nodule formation in the Korea Deep Ocean Study (KODOS) area, western part of Clarion-Clipperton fracture zones, northeast equatorial Pacific[J]. Mar. Geol., 1994, 122:125-150. Google Scholar
[19]	Murray R W, Knowlton C, Leinen M,et al. Export production and terrigenous matter in the central equatorial Pacific Ocean during interglacial oxygen isotope stage 11[J]. Global and Planetary Change, 2000, 24:59-78. Google Scholar
[20]	Banakar V K, Parthiban G, Pattan J N, et al. 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[J]. Chem.Geol., 1998, 147:217-232. Google Scholar