塔里木盆地腹足类化石时空分布特征及演化研究  

A SUMMARY OF DISTRIBUTION LAW OF GASTROPODS FOSSIL RESOURCES IN TARIM BASIN

作　　者：杨涛 苏学龙 罗怡鑫 YANG Tao;SU Xue-long;LUO Yi-xin(School of Life and Geographic Sciences,Kashgar University,Kashi 844000,China)

机构地区：[1]喀什大学生命与地理科学学院,新疆喀什844000

出　　处：《甘肃地质》2024年第2期22-28,共7页Gansu Geology

基　　金：喀什地区科技计划项目“塔里木盆地腹足类化石时空分布特征及演化研究”(KS2022104)。

摘　　要：整理分析了塔里木盆地已发现的242种腹足类化石材料,并结合相关文献资料,总结了塔里木盆地的腹足类化石时空分布特征,对塔里木盆地腹足类化石资源的整体情况做了初步探究。研究表明:盆地内腹足类化石主要分布在奥陶纪、晚白垩世、古近纪地层中,且主要集中在喀什、克孜勒苏柯尔克孜自治州、阿克苏和田西部地区,属种以前鳃亚纲古腹足目和中腹足目为主。证明了塔里木盆地的腹足纲可能会追溯到早寒武世,在经历了第一次辐射后,奥陶纪进入繁盛期。白垩纪晚期到古近纪晚期腹足类分布特征是受此时期大规模海侵和地质(气候)事件的影响。Based on the analysis of 242 kinds of gastropod fossil materials found in the Tarim Basin and the related literature,the spatial-temporal distribution characteristics of gastropod fossils in the Tarim Basin are summarized,and the overall situation of gastropod fossil resources in the Tarim Basin is preliminarily explored.Research has shown that gastropod fossils in the basin are mainly distributed in the Ordovician,Late Cretaceous,and Paleogene strata,and are mainly concentrated in Kashgar,Kizilsu Kyrgyz Autonomous Prefecture,and the western region of Aksu Hotan.The genera and species of gastropods are mainly in the Paleogastropoda and Mesogastropoda of the subclass Prebranchia.It is proved that the gastropoda in Tarim Basin may be traced back to the Early Cambrian,and after the first radiation,the Ordovician came into its flourishing period.The distribution characteristics of gastropods from the late Cretaceous to the late Paleogene were influenced by largescale marine invasions and geological(climatic)events during this period.

关 键 词：古生物 腹足类化石 时空分布 塔里木盆地 

分 类 号：P532[天文地球—古生物学与地层学] Q914[天文地球—地质学]