岩体生长过程的传热学制约及其岩浆熔融效应  

Constrains of Heat Transfer in Pluton Growth and Corresponding Magma Melting Effects

作　　者：白俊豪[1,2] 朱丹[1] 黄智龙[1] 

机构地区：[1]中国科学院地球化学研究所矿床地球化学国家重点实验室,贵阳550002 [2]中国科学院研究生院,北京100039

出　　处：《矿物岩石地球化学通报》2011年第2期204-209,共6页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家重点基础研究发展规划项目(2007CB411401);中国科学院重要方向项目(KZCX2-YW-Q04-06);国家自然科学基金资助项目(40772059);矿床地球化学国家重点实验室自主研究科研课题(2007KJBZ-2)

摘　　要：研究岩体生长过程的传热学制约及其引起的岩浆熔融效应能为我们认知地壳演化提供新的思路和手段。本文从年代学和测量技术两个方面综述岩体(或者岩浆房)逐渐长大的证据,然后运用Heat-3D程序简单模拟了Mount Stuart和Tenpeak岩体逐渐长大过程的传热学制约,结合年代学证据证明Mount Stuart岩体是逐渐长大的,并且每期次岩浆之间有很长的时间间隔,而Tenpeak岩体的长大可能是岩浆连续不断侵入或者各期次岩浆的短时间间隔所致。岩体逐渐长大过程引起的岩浆熔融效应是很明显的,模拟实验表明,岩浆多期次侵入地壳时生成的酸性熔体量更接近于地质观察事实。The research on constrains of heat transfer in the pluton growth and their corresponding magma melting effects provides new thoughts and methods for recognizing the crust evolution.This paper reviewed evidences of the incremental growth of pluton（or magma chamber） from the both perspectives of the geochronology and the measuring technique and roughly simulated the constrains of heat transfer in the growing processes of the Mount Stuart and the Tenpeak pluton by Heat-3D program.On the basis of the geochronology evidences,this study proved that the magmatic intrusions with long intervals caused the incremental growth of the Mount Stuart pluton and that the continuous magmatic intrusions or intrusions with short time intervals caused the growth of the Tenpeak pluton.This study found that the corresponding magma melt effects resulted from the incremental growth of pluton are notable.The simulated experiments indicated that the amount of granitic melts generated by multiple magma intrusions is very close to that of the geological observation.

关 键 词：岩体 岩体生长 传热学 岩浆熔融效应 

分 类 号：P588.11[天文地球—岩石学]