新疆喀什凹陷原油中的孢子花粉  

SPORES AND POLLEN FROM CRUDE OIL OF KASHI DEPRESSION, XINJIANG

作　　者：江德昕[1] 杨惠秋[1] 

机构地区：[1]中国科学院兰州地质研究所,兰州730000

出　　处：《Acta Botanica Sinica》1996年第10期809-813,共5页Acta Botanica Sinica（植物学报：英文版）

基　　金：国家自然科学基金资助项目

摘　　要：记述了新疆塔里木盆地喀什凹陷原油中萃取出的孢子花粉化石 30属 46种 .基于原油中孢粉化石的研究 ,追朔了该含油区的油源 ,并探讨了石油运移机理 .根据原油孢粉集合的特征 ,下侏罗统康苏组和中侏罗统杨叶组及塔尔尕组应是本区的油源岩系 .原油中来自油源岩系孢粉化石的发现 ,说明微裂隙是石油初次运移的通道 ,裂隙、节理、断层。Forty six species of fossil spores and pollen referred to 30 genera extracted from the crude oil samples collected from the Kashi Depression of the Tarim Basin in Xinjiang were recorded . Based on the investigations of the palynomorphs in crude oil, the petroleum source of the petroliferous region was traced and the petroleum migration mechanism is discussed. The fossil spores and pollen found from crude oil of the Neogene reservoir of the Kelatuo Oilfield of the Kashi Depression comprised mainly Deltoidospora lineata, Cyathidites australis, C. minor, Gleicheniidites rousei, Dictyophyllidites harrisii, Cibotiumspora paradoxa, Todisporites major, Granulatisporites minor, Leptolepidites major, Klukisporites variegatus, Murospora jurassica, M. minor, Paleoconiferus asaccatus, Vitreisporites jurassicus, V. shouldicei, V. jansonii, Alisporites thomasii, A. lowoodensis, Podocarpidites florinii, P. langii, P. multicinus, P. multesimus, Quadraeculina limbata, Protopinus scanicus, Protopicea exiliolides, Piceites expositus, P. latens, Pinuspollenites labdacus, Piceaepollenites alatus, Cedripites minor, Chasmatosporites major, C. elegans, C. canadensis, Cycadopites nitidus, C. typicus, Ephedripites tertiarius, Cerebropollenites carlylensis, Classopollis classoides, C. annulatus, Caryapollenites simplex, Chenopodipollis multiplex, Artemisiaepollenites sellularis, etc. According to the characteristics of the petroleum sporo pollen assemblage, the Lower Jurassic Kangsu Formation and the Middle Jurassic Yangye and Taerga Formations should be the petroleum source rock series of the Kashi Depression. Judging from the palynomorphs of the source rocks found in crude oil, it might be concluded that the fossil spores and pollen together with oil beads must have been expelled from the source rocks along microfissure avenuses during the primary migration; along fissures, joints, faults, and unconformity planes during the secondary migration.

关 键 词：孢子花粉 油源 侏罗纪 微体古植物 

分 类 号：Q913.84[天文地球—古生物学与地层学]