海南戈枕韧性剪切带微观构造研究

韧性剪切带的定性－定量分析。能更清晰、直接地揭示构造运动生发发展过程应力、应变的状况。作者对海南戈枕韧性剪切带从显微构造角度作了系统研究工作。通过矿物粒度、形态比统计，在纵横方向上更明确了内部的复杂分带性；通过显微批向构造、矿物组权及变形变晶分析了探讨了构造活动的方式、方向；通过古应力值、剪应变、总位移量、弗林系数的测算，定量表述了该带变形机制及应力、应变速率大小。

The Microstructore Study of the Gezhen Ductile Shear Zone, Hainan

The Gezhen shear zone extends in NE-direction , occurring in the Middie Proterozoic Baoban Group. It was formed in the Hercynian-Indsinian, It was discovered by qualitative- quantitative inmicrocopic analysis, Its tectonics show complex zoning in composition beth in strike and dip. Themanner of movement is a reverse one in section but a sinistral shear one in plane, Totle shift isabout one kilometer. Deformations are devided into pure shear style in the Hongpumenling part andflaser style from Baoban to Beiniu and from Gongai to Bumo, Stress strain and lithofacies studieshave obviously showed the deformation of the Gezhen shear zone becomes much stronger from mar-gin to center and from the SW part to the NE part.