MDD模式与快速冷却事件  

MDD MODEL AND RAPID COOLING EVENTS

作　　者：陈文寄[1] 李齐[1] 

机构地区：[1]中国地震局地质研究所,北京100029

出　　处：《地学前缘》1999年第4期371-377,共7页Earth Science Frontiers

基　　金：国家自然科学基金项目

摘　　要：ＭＤＤ 模式（Ｍｕｌｔｉｐｌｅ Ｄｉｆｆｕｓｉｏｎ Ｄｏｍａｉｎ ｍｏｄｅｌ） 是Ｄｏｄｓｏｎ 模式的扩展，它可以从一个钾长石样品分析中，得到温度在≤３５０ ～１５０ ℃之间的一条连续的冷却曲线，因此，ＭＤＤ 模式的一个突出贡献是对快速冷却事件的定量制约。冈底斯岩带与哀牢山－ 红河剪切带中新世的快速冷却事件与构造含义是利用这一模式进行研究的成功实例，它不仅定量厘定了快速冷却事件的时间，证实了其存在的普遍性，而且明确指出了中新世印度和欧亚板块碰撞后岩石圈质量转移过程的时间序列，定量地指出了冈底斯岩带逆冲抬升导致的地壳增厚与沿哀牢山－The Multiple Diffusion Domain model (MDD model) is a developed one of the Dodson models A continuous cooling curve ≤350～150 ℃ can be obtained by this model calculation based on the analysis of a K feldspar sample Therefore,one of the exceeding contributions of MDD model is the quantitative constrains offered by it for rapid cooling events The rapid cooling events of Miocene on Gangdese batholithic zone and Ailaoshan—Red River shear zone and their tectonic implication are a successful case by using this model They not only provide quantitatively the time of rapid cooling events but also indicate the existing universality of the events In the meantime it also shows the time procedure for mass transport and energy transfers in the lithosphere after the collision between the Indian and Eurasian plates, and the synchronism and discrepancy in time between the thickening of the crust by uplift of Gangdese batholithic zone along the major thrust zone and the lateral extrusion of the crustal blocks along the Ailaoshan—Red River shear zone.

关 键 词：MDD模式 快速冷却事件 冈底斯岩带 剪切带 

分 类 号：P542.2[天文地球—构造地质学] P534[天文地球—地质学]