【摘要】 本文从岩石学特征、纵横向分布的层位、岩相变化、古地理变迁等方面论述了瘤状灰岩、蠕虫状灰岩的成因。瘤状灰岩是台地边缘下部斜坡带的特有产物,是滑动破碎再经成岩改造成形的,具一定的储油性;蠕虫状灰岩一般产在台地边缘上部斜坡相带,成因较复杂,其中一部分与沉积、破碎作用有关。更多还原

【Abstract】 In this paper, the authors describe the origins of nodular and vermicular limestones on the basis of lithologic characters,the both lateral and vertical distribution of their strato-horizons, the changes of lithofacies and paleogeography. It is suggested that the nodular limestones are the typical product on the lower slope section of platform margin and derived from the diagenesis of gliding clasts. Therefore, the nodular limestones could be good reservoir rocks. The vermicular limestone generally developed on the upper slope section of platform margin and their origin is rather complicated, part of them may be related to sedimentation and fragmentation.更多还原