埃达克岩研究的几个问题
Some problems in the research of adakite
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摘要: 在简略分析中国埃达克岩研究情况的基础上,讨论了新近在有关埃达克岩研究方面取得的主要进展,探讨了先前埃达克岩研究中很少或者没有注意到的特殊的地球动力学意义。强调O型埃达克岩的出现标志着大洋萎缩消减的开始,C型埃达克岩的出现则暗示地壳在此之前就已经加厚,同时认为要解决埃达克岩研究中存在的一些问题,在很大程度上还有赖于青藏高原的埃达克岩研究。Abstract: Based on the analysis for the state in the research of adakite in China, this paper discusses the major advances in the research of adakite, and probes in to the particular geodynamic significances that are less or out of noticed before.This paper emphasizes that O-type adakite may be as an indicator to reveal the start of oceanic shrink and subduction, whereas the C-type adakite maybe indicate that the crust has thickened before the forming of this kind of magma.And then, the authors point out that many problems of adakite may be resolved by studying the adakite in Tibetan Plateau.
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Key words:
- adakite /
- oceanic shrink and subduction /
- crust thickened /
- geodynamic significances /
- Tibetan Plateau
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