古元古界的时限为1800～2500Ma。这一时期的地层在我国广泛分布，但均遭受强烈的变质变形，致使其地层出露的完整性及其顶、底界线等均受破坏，因而建立这一时期完整的地层层序，进行地层划分对比和厘定其时代归属都存在较大困难。
本文把古生界一中、上元古界海相盆地分为封闭型承压盆地和开启型泄压盆地两大类型。
This paper divides the Paleozoic - Middle-Upper Proterozoic marine basins into the closed bearing basin type and open relief basin type.
近年来，辽河油田元古界、太古界古潜山油气藏得到了比较好的勘探与开发，但对这些缝洞性储层的解释一直是一个难题。
In recent years, Proterozoic and Archaeozoic buried hill reservoirs have been explored and developed in Liaohe Oilfield, but it is a problem to interpret these fracture-cavity reservoirs.
辽河盆地曙光古潜山以碳酸盐岩和砂页岩为主的古潜山地层一直划归到中、新元古界。
The strata with carbonate rock, sandstone and shale in Shuguang buried hills of Liaohe basin were considered as Mesoproterozoic and Neoproterozoic.
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