摘要
福建龙海牛头山区新生代玄武岩中的长石,有多种赋存状态,其成分、结构、光性的变化特征,反映岩浆的成分、热动力条件演化趋向.尖晶石只出现在Ⅰ型、Ⅲ型包体中,其成分、结构差异大,显示Ⅰ型包体与玄武岩的成因关系,以及玄武岩浆晚阶段的富铁不混溶包体的分异和岩浆向富铁方向变化.
Feldspar occurs in Cenozoic Niutoushan basalt of the Longhai county in the southeastern Fujian province. It exists in a variety of types, inclusions, megacryst, xenolithic crystal and basalt, and has a typical change of composition, texture and optical property. It suggests that the evolusion trend of temperature and movement in magma. But spinel only exists in Ⅰ-Ⅲ type inclusion, and has a significant different of composition and texture. It shows that there is a magmatic affinity between I type inclusion and basalt, and nonmixed dissolving inclusion in rich-iron under late-stage fractional crystallization, at same time, magma evclution forward to a rich-iron.
出处
《南京建筑工程学院学报》
1996年第2期30-39,共10页
Journal of Nanjing Architectural and Civil Engineering Institute(Natural Science)
