在浙江东北部大衢山花岗岩体的局部地段出现大量闪长岩类包体,其分布、形态、结构和构造特点表明,该类包体是由成分和温度不同的两种岩浆,即寄主岩浆与包体岩浆经机械混合和包体岩浆的淬冷结晶的产物——淬冷包体。依据Campbell et al.(...在浙江东北部大衢山花岗岩体的局部地段出现大量闪长岩类包体,其分布、形态、结构和构造特点表明,该类包体是由成分和温度不同的两种岩浆,即寄主岩浆与包体岩浆经机械混合和包体岩浆的淬冷结晶的产物——淬冷包体。依据Campbell et al.(1986)的岩浆动力学模拟实验,混合的模型是岩浆喷泉作用。上述岩石包体与寄主岩相比,相对地富Zr,P,Ti和REE等高场强元素,这说明发生混合的、成分不同的两岩浆很可能是同源的,由液相不混溶作用产生。展开更多
For skarn type deposits , there are two lands of skarns , skarn formed by filtrating-diffusing metasomatism and vein skarn formed by filling . The vein skarn , discussed this paper and considered to be magmatic genesi...For skarn type deposits , there are two lands of skarns , skarn formed by filtrating-diffusing metasomatism and vein skarn formed by filling . The vein skarn , discussed this paper and considered to be magmatic genesis , is characterized by: (1) occurring as vein with distinct boundaries with country rocks , yet just the same even in marble easy to be replaced ; (2) composed of a mineral assemblage similar to that of granite ,containing pegmatite as wen as coarse skarn mineral pockets ,and sometimes transited with dike rocks ; (3) dear crystalline feature of deposition ; (4) sideronitic texture ; (5) stowing vesicular, bean-like and flow structures ; (6) very common liquid immiscibility; (7) vertical zoning of gravitational differentiation caused by volatile concentration upwards; (8) associated and transited with non-copper ore bodies of magmatic genesis and tungsten-bearing quartz veins of silicate magmatic genesis rich in volatile ; (9) melt inclusions . Two origins of skam magma . originated by assimilation of silicate magma at its emplacemeot or below it and generated owe to assimilation of deep magma ,corrosion of carbonate strata and liquation , are presented .展开更多
液态不混溶（liquid immiscibility）作为最重要的成岩成矿机制之一早就引起了学术界的关注（罗照华等,2007）。但是,自从阿波罗11号采集的月岩中首次发现自然条件下硅酸盐液态不混溶现象（Roedder et al.,1971）以来,地球火成岩中成规...液态不混溶（liquid immiscibility）作为最重要的成岩成矿机制之一早就引起了学术界的关注（罗照华等,2007）。但是,自从阿波罗11号采集的月岩中首次发现自然条件下硅酸盐液态不混溶现象（Roedder et al.,1971）以来,地球火成岩中成规模的液态不混溶现象并不多见,涉及液态不混溶过程的论述大多数是基于其最终产物的解释。展开更多
文摘在浙江东北部大衢山花岗岩体的局部地段出现大量闪长岩类包体,其分布、形态、结构和构造特点表明,该类包体是由成分和温度不同的两种岩浆,即寄主岩浆与包体岩浆经机械混合和包体岩浆的淬冷结晶的产物——淬冷包体。依据Campbell et al.(1986)的岩浆动力学模拟实验,混合的模型是岩浆喷泉作用。上述岩石包体与寄主岩相比,相对地富Zr,P,Ti和REE等高场强元素,这说明发生混合的、成分不同的两岩浆很可能是同源的,由液相不混溶作用产生。
文摘For skarn type deposits , there are two lands of skarns , skarn formed by filtrating-diffusing metasomatism and vein skarn formed by filling . The vein skarn , discussed this paper and considered to be magmatic genesis , is characterized by: (1) occurring as vein with distinct boundaries with country rocks , yet just the same even in marble easy to be replaced ; (2) composed of a mineral assemblage similar to that of granite ,containing pegmatite as wen as coarse skarn mineral pockets ,and sometimes transited with dike rocks ; (3) dear crystalline feature of deposition ; (4) sideronitic texture ; (5) stowing vesicular, bean-like and flow structures ; (6) very common liquid immiscibility; (7) vertical zoning of gravitational differentiation caused by volatile concentration upwards; (8) associated and transited with non-copper ore bodies of magmatic genesis and tungsten-bearing quartz veins of silicate magmatic genesis rich in volatile ; (9) melt inclusions . Two origins of skam magma . originated by assimilation of silicate magma at its emplacemeot or below it and generated owe to assimilation of deep magma ,corrosion of carbonate strata and liquation , are presented .
文摘液态不混溶（liquid immiscibility）作为最重要的成岩成矿机制之一早就引起了学术界的关注（罗照华等,2007）。但是,自从阿波罗11号采集的月岩中首次发现自然条件下硅酸盐液态不混溶现象（Roedder et al.,1971）以来,地球火成岩中成规模的液态不混溶现象并不多见,涉及液态不混溶过程的论述大多数是基于其最终产物的解释。
