【摘要】 从岩石－构造学标志、同位素（Ｓｒ，Ｎｄ）组成、组分等浓度图、年龄－温度冷却曲线和钙质角闪石压力计等方面论述西熊文岩体形成的动力学过程及其与穹状构造成型过程的联系。认为：大别地块西部的西熊文岩体为同隆升重熔型二长花岗岩。造山期后大别地块的隆升－剥露过程驱使地壳深部流变物质减压、局部熔融产生的花岗岩浆呈底辟式上冲侵位，并同时带动、协调未熔融的变质流变围岩侵位，并冷却于适可的温压、深度形成同隆升热动力穹状构造（热穹构造）；熔融过程的性质和体积改变量以及岩体的侵位率、冷却过程、结晶深度和就位年龄等参数均可作为理解和刻划热穹构造成型过程的重要信息；热穹构造是大别地块在中生代缓慢隆升－剥露过程中的一种次级构造形式。更多还原

【Abstract】 Petrologic,geochemical, structural, geological and thermochronologic data show that Xi Xiongwen intrusion belongs to the remelting synupliftadamallite, which stemmed from its metamorphiccountry rocks. And the inclosed structure surrounding this intrusion is regarded as the thermodynamic dome that results from uplift of western Dabie block and magmatic diapirism associated with it. The process of forming and emplacement for the intrusion provides useful and indispensable constraints on the shapingprocess of the thermodynamic dome .The study suggests that the equalmass remelting process leads to volumetric expansion which is 12 times as much as the volume of metamorphiccountry rocks, that the slowly cooling process(44℃/Ma) and emplacement of the intrusion that coordinate country rocks force the thermodynamic dome to shape under the surface of 152km in 1615Ma,and that the minimum height of the dome is about 5km.As a result, such information as the nature of the remelting process, the value of volumetric expansion, the intrusive velocity, the cooling process,the crystallization depth and the emplacementage etc. of the intrusion can help understand further or depict quantitatively the shapingprocess of western Dabie thermodynamic dome which is a typical structure during Dabieblock slowly uplifting in Mesozoic era.更多还原