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河南秦岭—大别山地区前寒武纪变质岩系广泛发育。本文从变质作用的侧面提出地层划分的意见。一地层划分由北而南,依次有栾川—方城—新安店;朱阳关—夏馆—大河、信阳—龟山—梅山;西官庄—镇平—西黄棚:木家垭—内乡—桐柏—商城等断裂带,长达数百公里,控制区内前寒武纪变质岩系,呈北西西—南东东向带状展布(见图和表)。根据地层的变质作用类型和期次,划分为四个变质亚区。
The Precambrian metamorphic rocks in Qinling and Dabie Mountains of Henan Province have been extensively developed. This paper puts forward the opinion of stratigraphic division from the side of metamorphism. A stratigraphic division from north to south, followed by Luanchuan - Fangcheng - Xin’andian; Zhu Yangguan - Xia Hall - River, Xinyang - Kameyama - Meishan; Xiguan Zhuang - Zhenping - West Yellowhouse: Mujiaya - Neixiang - Tongbai - Mall and other fault zones, up to hundreds of kilometers, the control area Precambrian metamorphic rocks, belonged to the NWX - SAW belt distribution (see Figure and Table). According to the strata metamorphism type and period, divided into four metamorphic subregions.