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碳酸盐鲕粒和鲕状砂岩通常存在于热带陆架沉积中，反映特殊的环境和海洋条件。大陆架上鲕粒的出现与富碳酸盐沉积的关系得到了很好的证明。据报道从孟买到勒德纳吉里鲕粒的１４Ｃ年龄为距今９～１１ｋａ。从浅海搬运到深海平原后，鲕粒的黄铁矿化和印度西海岸外深海岩心中的搬?
Carbonate oolites and oolitic sandstones are commonly found in tropical shelf sediments and reflect special environmental and marine conditions. The emergence of ooids in the continental shelf has been well documented in relation to carbonate-rich sediments. It is reported that the 14C age of Ramdagiri ooids from Mumbai is between 9 and 11 ka. After moving from the shallow sea to the deep-sea plain, the pyrite mineralization of ooids and the movement of deep-sea cores off the west coast of India