陕西小秦岭地区震旦亚代地层的讨论

• 作 者: 阎竹斌
• 机 构: 陕西省地质局第六地质队,
• 出 处: 西北地质
• 发表日期: 1978年04期
• 关键词: 小秦岭 地层 前震 太华群 斜长片麻岩 地质矿产 斜长角闪岩 石英岩 混合岩化 磁铁石英岩

陕西小秦岭地区,系指兰田坝河一洛南洛河一线以北,关中渭河以南,陕予交界以西的广大山区。区内前震旦亚代地层分布广泛,发育完整,层序清楚,蕴藏有较丰富的矿产,是研究前震旦亚代地层比较理想的地区。解放二十多年来,在党的领导下,先后有不少生产、科研单位在该区工作,获得了丰富的地质矿产资料,对前震旦亚代地层也从不同角度进行了划分和对比(表1),作

Small Qinling Mountains in Shaanxi Province, refers to the Lantianba River a Losan Luohe first line, south of the Guanhe River, Shaanxi to the junction west of the vast mountains. The pre-Sinian strata in the area are widely distributed, well-developed, well-defined and rich in mineral deposits. They are ideal areas for the study of the former Sinian Asia strata. Over the past 20 years since the liberation, under the leadership of the party, quite a number of production and research institutes have successively worked in the area and obtained rich geological and mineral resources. The stratigraphy of the former Sinian AD has also been divided and contrasted from different angles Table 1), made