【摘要】 利用高温高压多功能三轴实验装置对四川省攀枝花辉长岩进行了动态和静态部分熔融实验研究 ,实验的围压为 45 0～ 80 0MPa,温度区间为 90 0～ 1 2 0 0℃。实验表明 ,差应力对辉长岩动态部分熔融程度有一定影响 ,初始熔体主要分布在不同矿物的颗粒边界和三联点 ,变形影响熔体分布 ,变形与辉长岩韵律层具有一定成因联系。本文为熔体对岩石流变学行为影响提供了实验约束依据更多还原

【Abstract】 This paper presented the results of a preliminary experimental study on partial melting of fine and medium grained gabbros from Panzhihua, Sichuan Province. The experiments were conducted in conditions of confining pressure of 450～800 MPa and temperature of 800～1 200 ℃. The following knowledges could be concluded from the experiment: 1)the amount of partial melting in dynamic state during deformation with diffrerential stress being more than that in static state with no differential stress; 2)the initial melt distributing on different mineral grain boundaries and emerging from the triple junctions; and 3)the melt distribution being influenced by deformation. Based on these, it was inferred that the gabbro rhythmic layering might be related to structural deformation. This study provided experimental constraints of melt effect on rheology behavior of gabbro.更多还原