摘要
用地质学、岩石化学、地球化学方法研究了东营凹陷新生代火山岩的分布、产状、岩相及岩石种属、碱度、钾钠类型、岩浆成因与盆地演化、油藏的关系．研究表明：火山喷发既有陆上喷发，也有水下喷发，均以溢流为主；火山岩既有拉斑玄武岩，也有碱性玄武岩，类型为钾质略高的普通型和钾质不高的钾质型；火山岩由幔源原始岩浆在上地幔、地壳岩浆房中演化后喷出地表形成，是盆地强烈拉张下陷和生油层堆积最盛时期的产物；岩浆活动为生油层的熟化和石油的生成提供了热能，火山岩中部分是石油的良好储集层，部分是良好的屏蔽层。
With the theories of geology, petrochemistry and geochemistry, a research was made of the distributions, occurrences, facies, species, alkalinity, styles and magma formings of the Cenozoic volcanic rocks in Dongying sag; and it's relation to basin evolution and oil accumulation. The research shows that there are both continental and submarine facies, however, the volcanic rocks are mainly made up of effusive facies; there are both tholeiitic and alkali basalts of normal type, whose potassium is a little high, and potassic type, whose potassium is not high. The volcanic rocks are the products of the prime time for the extension and sinking of the basin and the accumulation of the oil forming layers, and are formed of the basin and the accumulation of the mantle derived primary magma, which has been evolved in the upper mantle and crust chamber, and erupted to the earth surface. Magmatism provided the heat energy for the maturation of the oil producing layers and the generation of petroleum. The rocks are closely related to the oil accumulation, parts of them are beneficial for the storage and accumulation of the petroleum, while the otheres parts are good shields.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1997年第2期157-164,共8页
Earth Science-Journal of China University of Geosciences
关键词
新生代
火山岩
盆地演化
凹陷
油藏
Cenozoic volcanic rock, basin evolution, Jiyang depression, Dongying sag.
