吉林省晚白垩世玄武岩地球动力学意义及油气成藏  

Geodynamic significance of Late Cretaceous basalt in Jilin and its relation with oil and gas accumulation

作　　者：花艳秋[1] 孙罡[1] 丁淑燕[1] 彭玉鲸[1] 

机构地区：[1]吉林省区域地质矿产调查所,吉林长春130022

出　　处：《世界地质》2006年第4期385-389,共5页World Geology

摘　　要：吉林省晚白垩世玄武岩至少经历了4期以上的火山喷发事件，其中大屯富峰山的4期火山事件时代分别是：98Ma，83～82Ma，80Ma，及78～77Ma。研究表明，其岩石特征与早白垩世火山岩疏远，而与新生代玄武岩更具亲缘性；因此可将晚白垩世视为喜山期构造一岩浆阶段的开始。吉林省晚白垩世玄武岩的研究对探讨中国东部岩石圈地球动力学具有重要意义。油气勘察证明，隐伏的晚白垩世火山群与油气成藏关系密切。Late Cretaceous basalt in Jilin had undergone volcanic eruption events for four times at least. A- mong them, the ages of the four volcanic events of Fufengshan in Datun are dated as 98 Ma, 83～82 Ma, 80 Ma and 78～77 Ma, respectively. The petrologic characters indicate that it is closer in genetic relation to the Cenozoic basalt and some far from the Early Cretaceous volcanic rocks. Therefore, it appears to be considered the Late Cretaceous as the beginning of the tectonic magma cycle of the Himalaya stage. The study of the Late Cretaceous basalt in Jilin is important for investigation of lithospheric geodynamics. Oil and gas prospecting has proved that the oil and gas accumulation is closely related to the Late Cretaceous perdu volcanic cluster in the Songliao Basin.

关 键 词：玄武岩 晚白垩世 地球动力学 油气成藏 吉林省 

分 类 号：P534.53[天文地球—古生物学与地层学] P588.145[天文地球—地质学]