Paleo-environmental evolution based on high-resolution phytolith since 26 ka B. P. in Huanghe River Delta

LI Ping; DU Jun; DU Na; GAO Wei

doi:10.1007/s13131-016-0789-x

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Article Navigation > Acta Oceanologica Sinica > 2016 > 35(1): 79-85

LI Ping, DU Jun, DU Na, GAO Wei. Paleo-environmental evolution based on high-resolution phytolith since 26 ka B. P. in Huanghe River Delta[J]. Acta Oceanologica Sinica, 2016, 35(1): 79-85. doi: 10.1007/s13131-016-0789-x

Citation:

LI Ping, DU Jun, DU Na, GAO Wei. Paleo-environmental evolution based on high-resolution phytolith since 26 ka B. P. in Huanghe River Delta[J]. Acta Oceanologica Sinica, 2016, 35(1): 79-85. doi: 10.1007/s13131-016-0789-x

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Paleo-environmental evolution based on high-resolution phytolith since 26 ka B. P. in Huanghe River Delta

doi: 10.1007/s13131-016-0789-x

LI Ping^1
,,
DU Jun²,
DU Na³,
GAO Wei²

1.
The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
2.
The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
3.
International College, Qingdao University, Qingdao 266071, China

Received Date: 2014-11-14
Rev Recd Date: 2015-03-05

Abstract

Abstract

The Huanghe River Delta is one of the world's large rivers, the Huanghe River Delta paleoenvironmental evolution in the Huanghe River has been a hot issue since the Last Glacial. Based on the core time series established by combining AMS ¹⁴C dating of Core DYZK1 sediments in submerged of Huanghe River Delta and acoustic sequence on sub-bottom profile, phytolith analyses are carried out on 96 sediment samples. The grain size parameters, magnetic susceptibility are combined with the vertical changes of biostratum to reconstruct the paleo-sedimentary and climatic conditions in the Huanghe River Delta. The study results show that there is a significant vertical change law in the index parameters, and that sedimentary environment of Huanghe River Delta experienced an evolutionary process of fluvial facies-sealand transition facies-tidal flat facies-neritic faciesdelta facies since 26.0 ka B. P.. The phytolith analyses results are as following. Firstly, The phytoliths are divided into lanceolate, smooth-elongated, spiny-elongated, rondel, long rectangular, bulliform and other types. In different sedimental environment, the phytolith content changes regularly, indicating that the phytolith assembles in the same sedimentary environment has a certain degree of stability. Secondly, The lanceolate, smooth-elongated and spiny-elongated categories of phytoliths have greater contents in the tidal flat facies and delta deposition, while have a smaller contents in the neritic facies and fluvial facies environment. Thirdly, Through comparative analysis of variation coefficient, the content of major phytolith categories in the sediment has a greater change amplitude in the sealand transition facies and fluvial facies deposition, while being more stable in the tidalflat facies and delta facies deposition.
- Huanghe River Delta,
- core DYZK1,
- phytolith,
- sedimentary facies

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