摘要
Thereisacouplingofthermal,mechanical,chemicalandfluidalprocessesinacontinentalshearzone.BothXincheng-XishuiandHetaishearzonesaretypicalcontinentalcrustshearzonesofgreenschistfaciesenvironment.Therepresentativemylonitezonesoftheshearzonesarestudiedwithwholerockmajorandtraceelementanalyses.Thechemicalcompositionalvariationtendenciesinbothshearzonesareverysimilarandthegain-lossratiosofvariouscomponentsinthemyloniticrocksarereflectedinthemassbalanceequations.Theenrichmentofthoseimmobilehigh-field-strenghelementsisconsideredtoherelatedtothevolumelossofthemyioniticrocksinashearzone.BasedonthevolumelossexpressionCs/Co=1/（1-V）,thefractionalvolumelosses（V）are37.5％and36.5％-42.3％respectivelyformylonitesandultramylonitesintheXincheng-Xishuishearzoneand11％and28％respectivelyformylonitesandphyllonitesintheHetaishearzone.ThehighvolumelossandlargeremovalofSiO2from
出版日期
1995年02月12日（中国期刊网平台首次上网日期，不代表论文的发表时间）
