The tectonics beneath the Okinawa Trough

Jin Xianglong

doi:10.1007/BF02888393

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The tectonics beneath the Okinawa Trough

OriginalPaper | Updated：2023-05-16

- The tectonics beneath the Okinawa Trough
- The tectonics beneath the Okinawa Trough
- 海洋湖沼学报（英文） 1984年2卷第1期页码：73-80
- Affiliations：
  
  Institute of Oceanology
- Author bio：
- Funds：
  
  Contribution No. 986 from the Institute of Oceanology, Academia Sinica.;The paper was presented in the PS-11 of IAPSO Symposium, 18th General Assembly IUGG, Hamburg, 22 August 1983.
- DOI：10.1007/BF02888393
  中图分类号：
- 纸质出版：1984
- Accepted：
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The tectonics beneath the Okinawa Trough[J]. 海洋湖沼学报（英文）, 1984,2(1):73-80.

Xianglong, J. The tectonics beneath the Okinawa Trough., Chin. J. Ocean. Limnol. 2, 73–80 (1984). https://doi.org/10.1007/BF02888393
The tectonics beneath the Okinawa Trough[J]. 海洋湖沼学报（英文）, 1984,2(1):73-80. DOI： 10.1007/BF02888393.

Xianglong, J. The tectonics beneath the Okinawa Trough., Chin. J. Ocean. Limnol. 2, 73–80 (1984). https://doi.org/10.1007/BF02888393 DOI：

摘要

Abstract

The nature of the crust of the Okinawa Trough is different from that of the continental shelf in the East China Sea. The crust beneath the Trough is in transformation from continental to oceanic and the depth of MOHO in the northern section of the Trough is deeper than in the southern section. Thick sedimentary strata of Neogene and Pleistocene ages are deposited in the Okinawa Trough

and divided into three layers: the upper horizontal layer

the middle layer lightly folded and the lower deformed layer. They were formed in Pleistocene

Pliocene

and Miocene to Paleogene

respectively. The tectonic movement in the southern section is stronger than that in the northern section. Some volcanic seamounts appear on the bottom of the Trough. On both slopes of the Trough are developed many normal faults and the intrusive igneous rocks. The Okinawa Trough

the back-arc basin

is an embryonic marginal basin in rifting and spreading. The formation of the Okinawa Trough started in the early Pliocene. The transformation of crust and the growth of the Trough progressed from the southern to the northern section. The southern section is a true trough in tectonic sense.

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references

Jin Xianglong, Yu Puzhi and Lin Meihua et al, 1983. Preliminary study on the characteristics of crustal structure in the Okinawa Trough.Oceanol. Limnol. Sin. 14 (2): 105–116. (in Chinese with English abstract)

Jin Xianglong and Yu Puzhi, 1982. The Tectonics of the Yellow Sea and the East China Sea.In Geology of Yellow Sea and East China Sea. Science Press, Beijing, pp. 1–22. (in Chinese)

Watanabe, T., 1970. Heat Flow on the Bottom of the Sea.In Basic Course of Ocean Sciences 4, Submarine Geophysics. Tokyo University Press, pp. 1–107. (in Japanese)

Watanabe, T., 1972. The Heat Flow of Western Pacific Ocean.In Submarine Geophysics. Tokyo University Press, pp. 149–169. (in Japanese)

Anderson, R. N., M. G. Langseth, D. E. Hayes, T. Watanabe and M. Yasui, 1978. Heat Flow, Thermal Conductivity, Thermal Gradient.In A Geophysical Atlas of the East and Southeast Asian Seas (edited by D. E. Hayes). The Geological Society of America Press.

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