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1977年在相国寺构造中石炭统中钻遇高产气层,从而揭开了四川天然气勘探史上新的一页。两年多来在川东中石炭统的油气勘探中,发现油气富集条件不仅与粒屑碳酸盐岩有关,而且与角砾云岩关系密切。因而研究角砾云岩的形成环境和条件,正确划分其成因类型,成了一个重要课题。
In 1977, the Carboniferous in the Xiangguosi Structure was hit with high-gas zones, opening up a new chapter in the history of natural gas exploration in Sichuan. In the past two years, in the exploration of oil and gas in the Carboniferous of eastern Sichuan, it was found that the hydrocarbon enrichment conditions are not only related to pelleted carbonate rocks but also closely related to breccia dolomite. Therefore, it is an important issue to study the formation environment and conditions of brecciated dolomite and to classify its genetic type correctly.