marine origin

基本解释

the rocks in which oil is found are of marine origin too.
石油存在处的岩石也都有海洋的渊源。
The principal compositions of soluble materials of the Ordovician oil field water in Tahe oilfield are consistent with sea water, suggesting its marine origin.
塔河油田奥陶系油田水的可溶物质主要成分与海水一致，表明其主要为海相成因。
In order to open new domains for oil exploration and solve the problem of insufficient remaining reserves, it is necessary to search for Mesozoic marine origin petroleum.
为开拓找油新领域，解决好目前油气地质储量不足的问题，提出寻找中生代海相油气。