DISTRIBUTION AND ECOLOGY OF DIATOM MAT DEPOSITS IN THE WEST LOW-LATITUDE PACIFIC OCEAN DURING THE LAST GLACIAL PERIOD

ZHAI Bin; LI Tiegang

doi:10.3724/SP.J.1140.2009.04065

2009 Vol. 29, No. 4

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Article navigation > Marine Geology & Quaternary Geology > 2009 > 29(4): 65-70

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ZHAI Bin, LI Tiegang. DISTRIBUTION AND ECOLOGY OF DIATOM MAT DEPOSITS IN THE WEST LOW-LATITUDE PACIFIC OCEAN DURING THE LAST GLACIAL PERIOD[J]. Marine Geology & Quaternary Geology, 2009, 29(4): 65-70. doi: 10.3724/SP.J.1140.2009.04065

Citation:

ZHAI Bin, LI Tiegang. DISTRIBUTION AND ECOLOGY OF DIATOM MAT DEPOSITS IN THE WEST LOW-LATITUDE PACIFIC OCEAN DURING THE LAST GLACIAL PERIOD[J]. Marine Geology & Quaternary Geology, 2009, 29(4): 65-70. doi: 10.3724/SP.J.1140.2009.04065

DISTRIBUTION AND ECOLOGY OF DIATOM MAT DEPOSITS IN THE WEST LOW-LATITUDE PACIFIC OCEAN DURING THE LAST GLACIAL PERIOD

ZHAI Bin^1,2,
LI Tiegang¹

1 Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;
2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 30 May 2009

Revised Date: 15 June 2009

Abstract

Abstract

Diatom plays a significant role in the carbon cycle of the whole world.Thriving to mats in the subsuface water, the "shade flora" is buried rapidly and becomes diatom mat deposits.The subsuface diatom production plays a considerable role in the whole productivity and output productivity. The distribution of diatom mat deposits discovered in the west low-latitude Pacific Ocean is introduced in this paper. Diatom mats are in banded distribution,spreading in NW-SE direction and most distributed in deep water areas, between 17.5°~20° N and with water depth of 4 837~6 150 m below CCD,where strong wind and land material input occur. The formation of diatom mats in this area may be due to the formation of ocean front in the last glacial period. The diatom Ethmodiscus rex(Wallich)Hendey in this area is a typical "shade flora" diatom, which can live and thrive in the oligotrophic open ocean by their regulating and floatation abilities. The occurrence of diatom mat deposits in the west low-latitude Pacific Ocean in the last glacial period makes this area become the sink of CO2 probably.
- last glacial period /
- diatom mat deposits /
- shade flora /
- fall dump /
- the west low-latitude Pacific Ocean

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References

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