THE HOLE D219 AND THE LATE QUARTERNARY PALEOGEOGRAPHIC ENVIORMENTS

HU Guangyuan; ZHUANG Zhenye; YIN Ping; ZHAO Dongbo; LIU Shuang; WANG Ling

doi:10.16028/j.1009-2722.2017.06003

2017 Vol. 33, No. 6

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HU Guangyuan, ZHUANG Zhenye, YIN Ping, ZHAO Dongbo, LIU Shuang, WANG Ling. THE HOLE D219 AND THE LATE QUARTERNARY PALEOGEOGRAPHIC ENVIORMENTS[J]. Marine Geology Frontiers, 2017, 33(6): 16-23. doi: 10.16028/j.1009-2722.2017.06003

Citation:

HU Guangyuan, ZHUANG Zhenye, YIN Ping, ZHAO Dongbo, LIU Shuang, WANG Ling. THE HOLE D219 AND THE LATE QUARTERNARY PALEOGEOGRAPHIC ENVIORMENTS[J]. Marine Geology Frontiers, 2017, 33(6): 16-23. doi: 10.16028/j.1009-2722.2017.06003

THE HOLE D219 AND THE LATE QUARTERNARY PALEOGEOGRAPHIC ENVIORMENTS

1.
Qingdao Publishing House, Qingdao 266061, China
2.
College of Marine Geoscience, Ocean University of China, Qingdao 266100, China
3.
Qingdao Institute of Marine Geology, CGS, Qingdao 266071, China
4.
Fujian Institute of Oceanography, Xiamen 361000
5.
Fujian Provincial Key Laboratory of Coast and Island Management Technology Study, Xiamen 361013, China
6.
Key Laboratory of Submarine Geosciences and Prospecting Techniques, MOE, China, Qingdao 266100, China
7.
Seismological Bureau of Linyi City, Linyi 276000, Shandong, China

Received Date: 18 January 2017

Publish Date: 28 June 2017

Abstract

Abstract

Lithological, biological and chronological stratigraphic studies are carried out for the hole D219 which is located at the northern Bohai Bay. The deposits of the hole may be divided into four sets, i.e. marine-littoral facies, continental facies, marine facies and continental facies again in a descending order. Single well facies analysis reveals that seawater invaded into the northern Bohai Bay at 39 ka BP, corresponding to the Xian Country Transgression. It then retreated from the Bohai Sea at 23 ka BP. Around 8.5 ka BP the research area was covered by seawater again. Based on the data from D219 and another 30 boreholes, it is concluded that the northern Bohai Bay was a plain in Late Quaternary with two paleochannel systems. The topographic gradient of the plain is no more than 1.7‰. The Nanpu River was small, but the Qikou River flowing from southwest to northeast was a meandering river with high discharge and multiple branches.
- northern Bohai Bay /
- Late Quaternary /
- quaternary strata /
- ancient landform /
- paleochannel

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References

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