Geochemical characteristics of sediments from the China Pioneer Area equatorial northeast Pacific Ocean

NI Jian-yu; ZHOU Huai-yang; PAN Jian-ming; ZHAO Hong-qiao; HU Chuan-yu; WANG Fang-guo

Article Contents

Article Navigation > Haiyang Xuebao > 2001 > 23(6): 94-100

NI Jian-yu, ZHOU Huai-yang, PAN Jian-ming, ZHAO Hong-qiao, HU Chuan-yu, WANG Fang-guo. Geochemical characteristics of sediments from the China Pioneer Area equatorial northeast Pacific Ocean[J]. Haiyang Xuebao, 2001, 23(6): 94-100.

Citation:

PDF( 293 KB)

Geochemical characteristics of sediments from the China Pioneer Area equatorial northeast Pacific Ocean

1.
Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Key Laboratory of Submarine Geosciences of State Oceanic Administration, Hangzhou 310012, China
2.
Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

Received Date: 2000-10-20
Rev Recd Date: 2000-12-20

Abstract

Abstract

In the China Pioneer Area,located in the western part of the area between the Clarion and Clipperton Fraction Zones,the topmost sediment column can be divided into two layers based on distinctive color and bioturbation properties:an upper pale brown layer(Unit A) and a lower dark brown layer(U nit B).Chemical properties in Unit A and Unit B are clearly different across the color boundary,which can be interpreted to be a hiatus.This results in an overall difference in sediment properties between Unit A and Unit B,that is,older Unit B sediment is higher in P₂O₅,MnO₂,CaO and Na₂O contents.Based on the correlation analysis,Mn and Fe in sediments have different genesis.The manganese mainly is authigenes,but Fe is from rock weathering.Ther efore,the chemical differences in sediments are the results of sedimentation setting differences.
- sediment component,
- multimetallic nodules,
- equatorial Pacific Ocean

FullText(HTML)

References(6)

References

陈建林,史君贤,张富生,等中国多金属结核生物成因研究.国家海洋局第二海洋研究所报告[R].1999.

HALBACH P,FRIEDRICH G,von STACKELBERG U.The Manganese Nodule Belt of the Pacific Ocean[M].Ferdinand Enke,Stuttgart,1988.254.

JEONG K S,KANG J K,CHOUGH S K.Sedimentary processes and manganes e nodule formation in the Korea deep ocean study(KOSOS) area,western part of Clarion-Clipperton Fracture Zones,northeast equatorial Pacific [J].Mar Geol,1994,122:125-150.

TOYODA K,MASUDA A.Sedimentary environments and chemical composition of Pacific pelagic sediments[J].Chem Geol,1990,88:127～141.

CALVERT S E,PEDERSEN T F.Geochemistry of recent oxic and anoxic marine sediments:implications for the geological record[J].Mar Geol,1993,113:67～88.

JUNG H-S,LEE C-B,JEONG K-S,et al.Geochemical and mineralogical characteristics in two-color core sediments from the Korea deep ocean study(KODOS) area,northeast equatorial Pacific[J].Mar Geol,1998,144(4):295～309.

Relative Articles

Supplements(0)

Cited By

Proportional views