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.
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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

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  • Received Date: May 06, 2005
  • Revised Date: September 11, 2005
    Graphical 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.
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    • References (20)
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