摘要
本文运用多重地层划分方法,将甘肃陇南地区前人所称的碧口群(广义的碧口群)解体为下寒武统、震旦系和前震旦系,并由下而上划分为阳坝组(AnZy)、白杨组(AnZb)、秧田坝组(AnZyn)、关家沟组(Z_1g)、陡山沱组(Z_2d)、临江组(Z_21)、干沟组(∈_1g);碧口群中矿产丰富,本文在原碧口群中划出了4个合矿层位和文县—康县及阳坝—店坝两个成矿带。
In this paper, by means, of comprehensive subdivision,the strata of former Bikou group in broad sense have been divided into three chronostratigraphic units. Pre-Sinian System, Sinian System, and lower Cambrian Series, and further subdivided into seven .lithologic stratigraphic units. They are, in chronologic order. Yangba formation(AnZy), Baiyang formation (AnZb), Yangtianba formation (AnZyn), Guanjiagou formation (Z1g), 'Doushantuo' formation(Z,d), Linji-ang formation(Z21), and Gangou formation (∈ig). Bikou Group is abundant in mineral product. We have found four ore-bearing horizons and two ore-forming belts, namely, Wenxian-Kangxian ore-forming belt and Yangba-Douba ore-forming belt, and we have also discussed the rule of ore distribution in Bikou group preliminarily.
出处
《甘肃地质》
1991年第12期38-69,T002,共33页
Gansu Geology
