一、变质岩系时代的研究概况洛南地区东秦岭北坡的变质岩系,是指分布于陕西商丹断裂以北和洛南洛河南岸地区复杂变质岩地层组合。这套地层在洛南地区出露广泛,发育完整,1929年赵亚曾、黄汲清将其命名为“秦岭系”。他们认为,秦岭系连同分布于其南侧的“柞水系”分别与太古代的泰山 I. Overview of the Metamorphic Rocks Era The metamorphic rocks on the northern slope of East Qinling in the Luonan area refer to the combination of complex metamorphic rocks distributed in the north of Shangdan Fault in Shaanxi Province and south of Luonan Luo River. This set of strata exposed in Luonan extensive, well-developed, 1929 Zhao Yazeng, Huang Jiqing named it “Qinling Department.” In their opinion, the Qinling Mountains together with the “Zhashui” system distributed on its south side are respectively connected with the Archean Taishan