CAJ | 학술논문

通过对沉积层序、岩心特征、粒度特征、测井资料及录井资料的详细分析,研究了柴达木盆地北缘西段马海凸起北部古近系下干柴沟组下段3个砂层段的沉积特征及演化过程。结果表明,该区下干柴沟组下段沉积时期为一明显的水退过程,沉积相以辫状河河流相为主。沉积体系的研究清楚地展示了马北地区渐新世早期的沉积特征及演化规律,为该区下一步的油气勘探提供了可靠的地质依据。
통과대침적층서、암심특정、립도특정、측정자료급록정자료적상세분석,연구료시체목분지북연서단마해철기북부고근계하간시구조하단3개사층단적침적특정급연화과정。결과표명,해구하간시구조하단침적시기위일명현적수퇴과정,침적상이변상하하류상위주。침적체계적연구청초지전시료마북지구점신세조기적침적특정급연화규률,위해구하일보적유기감탐제공료가고적지질의거。
Based on the analysis of sedimentary sequence, cores, grain size, well logging data, the sedimentary characteristics and evolution of Lower Xiaganchaigou Formation of Paleogene in northern Mahai area,northern margin of Qaidam Basin,were studied. The result shows that the Lower Xiaganchaigou Formation displays an obvious regression, and the sedimentary facies is mainly braided fluvial facies. The study on sedimentary systems demonstrates the sedimentary facies distribution and evolution rule more clearly, which provides reliable geologic information for the next exploration activity.