In organic lamina, the content of organic carbon exceeds 5% and algae fossils and ichthyolite are abundant.
其中有机质纹层中的有机碳含量在5%,含藻化及鱼化等;
In organic lamina, the content of organic carbon exceeds 5% and algae fossils and ichthyolite are abundant.
其中有机质纹层中的有机碳含量在5%,含藻化及鱼化等;
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