The prominent characteristic of the siliceous rock is the residual bioclastic structure, with plenty of silicified calcareous organisms, such as brachiopoda, encrinite caudex and coral, which are several millimeters in size.
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美
- 其顯著(zhù)特征是,巖石具殘余生物碎屑結構,見(jiàn)大量腕足類(lèi)、海百合莖、珊瑚等鈣質(zhì)生物假象,主要為mm級完整個(gè)體,密集堆積。
