chronostratigraphic unit中文什么意思

年代地层单位

例句与用法

For long time , to the jurassic stratigraphic framework of the studied area and its adjacent places , different workers adopted different group , formation and chronostratigraphic units
长期以来，藏北侏罗系地层格架没有达到共识，不同研究者对测区及邻区侏罗系采取了不同的群、组名称和时代归属方案。
The further study shows that the sandstones at the bottom of the lower ganchaigou formation , which is a tr lithostratigraphic unit , were deposited in different stages of base level cycle , and they are not chronostratigraphic unit . so , to identify different sequences , especially high order sequences in analysis of terrestrial stratigraphic sequences , the sequence distribution feature must be fully consided . this view has practical significance for recognizing forming , evolution and filling history of qaidam baisn correctly , and has both theorical and practical meaning for directing further oil exploration
研究还表明，传统岩石地层单位中下干柴沟组底部的砂岩代表了基准面变化旋回不同阶段沉积的产物，它们属于不同的成因单位，也非等时地层单位，因此，在进行陆相层序地层分析时，各级层序尤其是高级层序的识别要充分考虑面上的层序展布特点，这一观点对正确认识柴达木盆地的形成演化和沉积充填历史，指导今后的勘探具有一定的理论和实际意义。