同成因 meaning in English

isogenesis
isogeny

The upper yingshan formation in tahe oil field is analyzed in the light of the theory of high - frequency sequence stratigraphy ; it comprise of 4 fourth - order sequences , including two progradation parasequence sets and two retrogradation parasequence sets , and 28 fifth - order sequences
由于四级层序、五级层序是受米兰科维奇天文周期控制的异旋同成因层序，横向变化不大，能够在大范围内追踪对比。