佛子岭群变质岩石学变质作用及时代的初步研究

详细信息

刊出日期: 1995-08-15

METAMORPHIC PETROLOGY AND METAMORPHISM OF THE FOZILING GROUP IN NOTHERN HUAIYANG AND ITS AGE

Publish Date: 15 August 1995

摘要: 佛子岭群是北淮阳地区分布较广的地层单位之一。主要岩石类型为长石石英岩、细粒石英岩、含蓝晶石英片岩和含石英白云质大理岩。变质矿物有蓝晶石、石格石、黑云母及白云母等。根据石榴石一黑云母矿物对计算温度约５２０℃，压力为０．３～０．５ＧＰａｋ。主变质作用年龄为３７８±２４Ｍａ。

Abstract: The Foziling Group is one of the widespread stratigraphic units in northern Huaiyang,Themain rock types of the group are arkosite,fine-grained quartzite,glaucophane-bearing quartzschist,and quartz-bearing dolomitic marble. The metamorphic age of the group is 378±24 Ma.The metamorphic minerals include glaucophane,garnet, biotite and muscovite. The metamor-phic temperature calculated with the garnet-biotite mineral pair is about 520℃ and the pressureis 0.3 0.5 GPa.