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为配合陕、豫两省有关地质队和成都地质学院第七教研室秦东科研队的工作,我们曾对东秦岭东段的几个花岗岩体和伟晶岩密集区进行同位素地质年龄测定。工作面积大体上沿东秦岭东段通常所称的太古代轴心隆起一带,西起陕西丹凤桃花铺,东至河南芦氏龙泉坪,南北分别以商南——桃花铺断裂和高耀子——双槐树断裂为界。在大约1800平方公里的面积上对地层、花岗岩体和伟晶岩脉测定同位素地质年龄样品二十六个,其中多数为我室年龄组自己采集,少部分为地质队选送。现将资料整理出来,以供参考(图1)。
To tie in with the geological teams in Shaanxi and Henan Provinces and the Qindong Research Team of the Seventh Teaching and Research Section of the Chengdu Geological Institute, we conducted isotopic geologic dating of several granitic bodies and pegmatite-intensive areas in the eastern section of the Eastern Qinling. The work area is generally along the eastern part of the East Qinling Mountains, commonly referred to as the so-called axis of the uplift of the archaeological area, west of Shaanxi Danfeng peach shop, east of Henan Lu’s Longquan Ping, north and south respectively Shangnan - Peach Blossom and Gao Yaozi - - Shuanghuai tree fault as the boundary. Twenty-six isotopic geologic age samples of stratigraphic, granodiorite and pegmatite veins were determined over an area of about 1,800 km2, most of which were collected by our own age group and a small percentage were selected by geological teams. Now the data sorted out for reference (Figure 1).