GEOCHEMISTRY OF MAJOR ELEMENTS IN THE SURFACE SEDIMENTS OF THE OFFSHORE AREA OF SHANDONG PENINSULA AND ITS GEOLOGICAL IMPLICATIONS

LI Guogang; HU Bangqi; LI Jun; BU Ruyuan; YANG Min; DOU Yanguang

doi:10.3724/SP.J.1140.2012.03045

2012 Vol. 32, No. 3

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Article navigation > Marine Geology & Quaternary Geology > 2012 > 32(3): 45-54

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LI Guogang, HU Bangqi, LI Jun, BU Ruyuan, YANG Min, DOU Yanguang. GEOCHEMISTRY OF MAJOR ELEMENTS IN THE SURFACE SEDIMENTS OF THE OFFSHORE AREA OF SHANDONG PENINSULA AND ITS GEOLOGICAL IMPLICATIONS[J]. Marine Geology & Quaternary Geology, 2012, 32(3): 45-54. doi: 10.3724/SP.J.1140.2012.03045

Citation:

LI Guogang, HU Bangqi, LI Jun, BU Ruyuan, YANG Min, DOU Yanguang. GEOCHEMISTRY OF MAJOR ELEMENTS IN THE SURFACE SEDIMENTS OF THE OFFSHORE AREA OF SHANDONG PENINSULA AND ITS GEOLOGICAL IMPLICATIONS[J]. Marine Geology & Quaternary Geology, 2012, 32(3): 45-54. doi: 10.3724/SP.J.1140.2012.03045

GEOCHEMISTRY OF MAJOR ELEMENTS IN THE SURFACE SEDIMENTS OF THE OFFSHORE AREA OF SHANDONG PENINSULA AND ITS GEOLOGICAL IMPLICATIONS

1 Shandong Provincial Key Laboratory of Marine Ecology and Environment & Disaster Prevention and Mitigation, North China Sea Branch of the State Oceanic Administration, Qingdao 266033, China;
2 Marine Engineering and Prospecting Institute of North China Sea, SOA, Qingdao 266033, China;
3 Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao 266071, China

Received Date: 20 September 2011

Revised Date: 23 March 2012

Abstract

Abstract

In this study, a total of 274 surface sediments from the offshore area of Shandong Peninsula were collected and analyzed for grain-size, total organic carbon (TOC), and major elementss. Results show that SiO2 is the highest major element, followed by Al2O3 as the second. These two major elements make up 77.8% of the total major elements. The composition of major elements depends upon the type of sediment or grain-size. SiO2 is usually enriched in the coarse-grained sediments, whereas Al2O3、Fe2O3、MgO、MnO、P2O5 and K2O are relatively concentrated in fine-grained sediments. However, Na2O and TiO2 are independent from sediment types. The results of correlation and R-factor analysis suggested that the distribution of major element in the surface sediments from the offshore area of Shandong Peninsula can be classified to three groups. The first group consists of SiO2、Al2O3、Fe2O3、MgO、K2O、TiO2、P2O5、TOC, the second includes CaO and CaCO3, and Na2O and MnO belong to the last groups. These three groups may probably represent terrigenous, marine biogenous and marine authigenic sediments respectively. The chemical weathering index of the surface sediments varies from 50-65, depending upon their provenance. The CIA and TiO2/Al2O3 values suggest that the Huanghe sediments are mainly deposited along the offshore area of Shandong Peninsula, controlled by the coastal currents and the sea bottom geomorphology.
- major element /
- provenance /
- Huanghe /
- Shandong Peninsula

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References

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