The physico-chemical features and their geological implications of magma in the Okinawa Trough

HUANG Peng; LI An-chun; HU Ning-jing

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HUANG Peng, LI An-chun, HU Ning-jing. The physico-chemical features and their geological implications of magma in the Okinawa Trough[J]. Haiyang Xuebao, 2008, 30(3): 85-94.

Citation:

HUANG Peng, LI An-chun, HU Ning-jing. The physico-chemical features and their geological implications of magma in the Okinawa Trough[J]. Haiyang Xuebao, 2008, 30(3): 85-94.

HUANG Peng, LI An-chun, HU Ning-jing. The physico-chemical features and their geological implications of magma in the Okinawa Trough[J]. Haiyang Xuebao, 2008, 30(3): 85-94.

Citation:

HUANG Peng, LI An-chun, HU Ning-jing. The physico-chemical features and their geological implications of magma in the Okinawa Trough[J]. Haiyang Xuebao, 2008, 30(3): 85-94.

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The physico-chemical features and their geological implications of magma in the Okinawa Trough

1.
Key Laboratory of Marine Geology and Environment of Chinese Academy of Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
2.
First Institute of Oceanography, State Ocean Administration, Qingdao 266061, China

Received Date: 2007-04-17
Rev Recd Date: 2007-09-13

Abstract

Abstract

On the basis of geochemical data of volcanic rocks,the variety of physo-chemical parameters,including temperature,pressure,density and viscosity,was studied to underst and features and development of magma in the Okinawa Trough.The following conclusions were obtained:(1) the mag maunder the northern Okinawa Trough held higher pressure and lower tem perature than those of magma under the middle Okinawa Trough;(2) the magma of the northern Okinawa Trough had higher value of density and viscosity than that of the middle Okinawa Trough because the magma enriched volatile;(3) the low density and viscosity of magma under the Okinawa Trough were of advant age topent rate lithosphere and played fractional cry stallization;and(4) under the same environmental conditions and water content,the uplifted velocity of magma in the middle Okinawa Trough was higher than that in the northern Okinawa Though.It could explain why magmatism in the middle Okinawa Trough was more drastic than in the northern Okinawa Trough.
- Okinawa Trough,
- magma,
- physo-chemical parameters

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References(27)

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