西藏扎仁地区中侏罗统布曲组颗粒灰岩及其意义

Granula Limestone and its Dignificance of Buqu Formation Middle Jura Series in Zharen,Tibet

本文通过对西藏南羌塘扎仁地区中侏罗统布曲组颗粒灰岩特征描述,并对其产出层位、沉积环境作出分析,认为中侏罗世布曲组沉积早期(J2b1),该区在碾砸-巴尔扎-日埃坡-晓嘎晓那-巴格底加日一线以北地区,属于一套碳酸盐台地边缘浅滩相沉积,为一种强烈扰动的高能浅水沉积环境。此线以南同期总体是一套开阔碳酸盐台地相沉积。对该区寻找油气具有一定的指导意义。

By the character description of the granola limestone of Buqu formation Middle Jura series in Zharen region, south Qiangtang , Tibet and the analyses of its occurrence position and the sedimentary environment, it think in the early sediment of Buqu formation Middle Jura series, this region is situated in the north of Nianza-Bazhaer-Riaipo-Xiaogaxiaona--Bagedijiari line, belong to a series of shallow belt sediment of carbonate plateau edge, was a shallow water deposit high - energy environment with a intense perturation. In the south of the line, it was a series of open carbonate plateau belt sediment generally. There is some guiding significance for seeking oil gas in this region.