GEOCHEMICAL CHARACTERISTICS AND GEOLOGICAL SIGNIFICANCE OF MAJOR ELEMENTS IN SURFACE SEDIMENTS IN QIONGDONGNAN AREA

CHEN Hong; LIU Jian; WANG Hong-bin

2007 Vol. 27, No. 6

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Article navigation > Marine Geology & Quaternary Geology > 2007 > 27(6): 39-45

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CHEN Hong, LIU Jian, WANG Hong-bin. GEOCHEMICAL CHARACTERISTICS AND GEOLOGICAL SIGNIFICANCE OF MAJOR ELEMENTS IN SURFACE SEDIMENTS IN QIONGDONGNAN AREA[J]. Marine Geology & Quaternary Geology, 2007, 27(6): 39-45.

Citation:

CHEN Hong, LIU Jian, WANG Hong-bin. GEOCHEMICAL CHARACTERISTICS AND GEOLOGICAL SIGNIFICANCE OF MAJOR ELEMENTS IN SURFACE SEDIMENTS IN QIONGDONGNAN AREA[J]. Marine Geology & Quaternary Geology, 2007, 27(6): 39-45.

GEOCHEMICAL CHARACTERISTICS AND GEOLOGICAL SIGNIFICANCE OF MAJOR ELEMENTS IN SURFACE SEDIMENTS IN QIONGDONGNAN AREA

1 Guangzhou Marine Geologic Survey, Guangzhou 510760, China;
2 Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China

Received Date: 12 June 2007

Revised Date: 30 September 2007

Abstract

Abstract

Geochemical characteristics and geological significance of surface sediments from the Qiongdongnan area are studied. 88 sediment samples have been analyzed for their major element contents. SiO2 is of the highest content in the area, with its mean content up to 41.15%. CaO following SiO2, its mean content is 15.66%.Terrestrial clasts in the area were mainly carried by Honghe River from Western Yunnan Plateau. Factor analysis shows that SiO2,Al2O3,Fe2O3,MgO,K2O and TiO2 originate from terrestrial source and CaO,CaCO3 and LOSS are mainly derived from marine calcicolous livings. Meanwhile, P2O5 and Corg mainly come from mixed terrestrial matrials and marine livings and Na2O and MnO are mostly products of marine chemistry or volcanism. However, the components of terrestrial clastic and biological materials are primary factors that control the chemical compositions of sediments in the study area.
- surface sediments /
- geochemical characteristics /
- major element /
- factor analysis

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References

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