Magmatic evolution of Okinawa Trough during its early spreading stage

Zhai Shi-kui; Chen Li-rong; Shen Shun-xi; Mao Xue-ying; Chai Zhi-fang; Ma Shu-lan

doi:10.1007/BF02845170

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Magmatic evolution of Okinawa Trough during its early spreading stage

Updated：2023-05-16

- Magmatic evolution of Okinawa Trough during its early spreading stage
- Journal of Oceanology and Limnology Vol. 12, Issue 3, Pages: 246-254(1994)
- Affiliations：
  
  1. Institute of Oceanology
  2. Institute of High Energy Physics
- Author bio：
- Funds：
- DOI：10.1007/BF02845170
  CLC：
- Published：1994
- Accepted：
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Shi-kui, Z., Li-rong, C., Shun-xi, S. et al. Magmatic evolution of Okinawa Trough during its early spreading stage., Chin. J. Ocean. Limnol. 12, 246–254 (1994). https://doi.org/10.1007/BF02845170
DOI：

Shi-kui, Z., Li-rong, C., Shun-xi, S. et al. Magmatic evolution of Okinawa Trough during its early spreading stage., Chin. J. Ocean. Limnol. 12, 246–254 (1994). https://doi.org/10.1007/BF02845170 DOI：

摘要

Abstract

The Okinawa Trough is different from other typical backarc spreading basins because the

acidic volcanic rock (pumice) is extensively distributed in it. Systematic mineralogical and petrochemical study on a representative core (Z14–5) to characterize the magmatic evolution of the Trough during its early spreading stage showed that the pumice magma was originally from the mantle

but underwent full crystallization differentiation and was possibly contaminated by crust-derived material. With time

the acidic volcanic activities of the Okinawa Trough have an evolutional tendency of shifting to relatively basic magma activity. With further spreading of the Trough the magmatic activity will be intensified and the crust of the Trough will develop from the transitional type to the oceanic type.

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references

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