全岩化学成分的高k_2o含量与晚期钾交代作用有关。
The high contents of K_2O of chemical composition of total rocks relate to the late K-metasomatism.
天然气化学成分表明，其为成岩作用早期生物化学作用所形成。
The chemical composition of the gas indicates that it was formed by biochemical action in the early stage of diagenesis.
天然气化学成分表明，其为成岩作用早期生物化学作用所形成。
The chemical composition of the gas indicates that it was formed by biochemical action in the early stage of diagenesis.
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