动态熔融过程中辉长岩主要矿物的熔融序列及其熔融动力学研究
Melting sequence and dynamics of the major minerals of gabbro in the process of dynamic melting
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摘要: 本文以高温高压动态熔融条件下的实验辉长岩样品为研究对象，系统研究了主要矿物的熔融序列和熔融现象，并从熔融动力学的角度对其进行了解释。通过对熔融条件和熔融机制的复杂性和作用机理进行的深入分析，澄清和得出了以下几点重要认识：（1）在具体的熔融环境条件下，斜方辉石可以比单斜辉石先熔；（2）熔融阶段、熔融速率不同，矿物的熔融机制也不同，从而导致熔融现象，熔融产物不同；（3）化学因素、或者说元素交代作用．在地质条件下的熔融过程中可能起着重要作用，这和纯物理学上强调的物理熔融有很大不同；（4）一种熔融现象或熔融序列．可能是受多种熔融奈件制约的，要进行综合分析对比，才能确定其具体的熔融性质，从而为理解和认识具体的地质过程服务。Abstract: Two gabbro samples were studied by high temperature and high pressure dynamic melting experiment.The melting sequence and melting phenomenon of the major minerals in the gabbro were systematically studied and explained on the base of melting dynamics.Through complete analyses to melting condition and melting mechanism,we got several conclusions:(1) Under certain melting condition,orthopyroxene can be melted earlier than clinopyroxene;(2) With different melting stage and melting rate,the melting machanism is different,which causes different melting phenomenon and different production;(3) The factor of chemistry or the element metasomatism is probably important for the melting under geological condition which is very different from the melting in physics;(4) Certain melting phenomenon or melting sequence can be influenced by many kinds of melting conditions.Only when we do analysis and comparison completely,can we determine the nature of melting which can help us understand the process of geology.
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Key words:
- Gabbro /
- Dynamic melting /
- Melting sequence /
- Melting dynamics
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