上古生界石炭系羊虎沟组砂体以潮坪、泻湖沉积为主；
The sandstone body of Yanghugou formation deposited mostly from tidal flat and lagoon.
这一结果对研究关家沟组地层对比、时代划分提供了依据。
The result is significant to study the geological age and stratigraphic subdivision in Guanjiagou Formation.
博格达山北缘以二叠系芦草沟组湖相油页岩为主要烃源岩。
The main hydrocarbon source rock in the The northern border of Bogd .
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