苏胶地体榴辉岩相岩石中流体包裹体的初步研究

高压低温变质岩的流体包裹体研究程度很低。本文选择苏胶地体四个有代表性的榴辉岩相岩石：蓝晶石英钟榴辉岩、石英榴辉岩、蓝晶石石英岩和绿帘石石英脉作了初步研究。研究结果表明：各类榴辉岩相岩石的流体包裹体均程度不同地发生了次生变化．未发现原生包裹体。蓝晶石榴辉岩中的石英包裹体表现为变质峰期的流体成分特征：均—温度较高、冰点相对较低、成分复杂多样，具深源特征；而其它样品则代表退变质阶段之产物：成分简单、盐度较小，且不含碳质包裹体。

A PRELIMINARY RESEARCH ON FLUID INCLU-SION IN ROCKS OF ECLOGITE FACIES WITHIN THE SU-JIAO TERRAIN

Fluid inclusion of high-pressure and low-ten1perature metanlurphic rocks presents a lower level of research. In this paper, four representative rocks of eclugite facies have been chosen forfurther study. They are kyanite-eclogite, quartz-eclogite, kyanite-quartzite and epidute-quartz vein. The studied results show that different secondary changes occurred in fluid inclusions of various rocks and no primary inclusion has been found. An inclusion within kyanite eclogite is characterized by fluid composition of the nletamorphic peak stage: higher in hemogeneuus tem-perature, relative lower in ice-puint, Complicated-varied in composition and with anatectic characteristics; the other samples are of characteristic on prvducts of diaphthoresis stage and with simple composition, lower salinity and little carbonaceous inclusion.