常見(jiàn)例句The changes of fold uplift and sedimentation rates lead to onlap, overlap and offlap relationship in the growth strata. 構(gòu)造抬升速率和沉積速率的變化，可引起生長(zhǎng)地層的上超、超覆和退覆。How to recover the original positions of removed onlap and offlap point s has still been a pending problem. 如何恢復(fù)其原始沉積時(shí)的位置，至今尚無(wú)定量方法提出。Stratigraphy traps can be classified into stratigraphic onlap trap and stratigraphic erosion unconformity trap. 地層圈閉可分為地層超覆不整合圈閉和地層削蝕不整合圈閉。The facies-varied zone and stratigraphic onlap zone of the Silurian in eastern Tazhong area are the main directions fur petroleum prospecting. 木部志留系巖性相變帶、地層超覆帶是石油勘探的主戰(zhàn)場(chǎng)。Supersequence boundaries are characterized by truncation, onlap and toplap etc. on the seismic sections and sudden change of lithology and logging curve. 超層序界面在地震剖面上最明顯的特征是出現(xiàn)削截、上超和頂超等反射終止現(xiàn)象，巖性、測(cè)井曲線也發(fā)生劇烈變化。There are four types of sub-upper Permian unconformities in the Tarim basin,they are fold truncation,faulted-block-turned truncation,onlap and parallel unconformities. 塔里木盆地的上二疊統(tǒng)或中、新生界與下伏地層之間存在著不同類型的不整合,如褶皺削截(超覆)不整合、斷塊旋轉(zhuǎn)削截超覆不整合、超覆不整合和平行不整合等。 返回 onlap