摘要:
小秦岭是我国中原地区主要脉金产地,矿田位于豫陕两省界区。以往工作从未着眼矿田的整体研究,观点纷纭,矛盾甚多。近年作者通过万分之一区域地质剖面实测和十万分之一地质编图,将小秦岭太华群划分为五个地方性地层单位——组。通过野外及镜下观察,编制多种岩石化学图解,判别原岩,分析岩相,并将五个组归属为上下两个太华旋迴。小秦岭太华群是矿田的含金岩系,由一套海相沉积和海相火山喷发并经受混合岩化作
Abstract:
In this paper, according to the results of 1: 10,000-scale regional geological section measurements and 1: 100, 000-scale geological map compilation of the Xiao Qinling gold field, the Taihua Group in the Xiao Qinling Mountains is divided into five stratigraphic units: Puyu Formation, Huanchiyu Formation, Lujiayu Formation, Guanyintang Formation and Qiangmayu Formation. Through regional observations and petrochemical diagrams, the primary rock-types are distinguished and lithofacies is analysed, and these five formations are assigned to the upper and lower Taihua cycles of Archean age.
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