摘要
自然伽玛曲线上的尖锥状～针状特高异常—“海侵针”,常可指示海侵作用与海相层的存在:“阵发式”海退与“振荡式”海退则是含煤岩系形成过程中两类常见的利于聚煤的海退类型.
The extreme-high peak of sharp-knife form, in Jr curve is named, by the writer, the 'transgfression sword', which indicates the transgression and the existing of marine deposits usually. Being found frequently in coal-bering formation, the 'stage regression' andthe 'vibration regression' are both typical style-regression benificial to the coal-accumulated.
关键词
自然伽玛曲线
海侵针
阵发式
海退
Jr curve
transgression sword
stage regression
vibration regression
