贵州兴义及邻区中三叠世安尼期管壳石礁的造礁和附礁生物组成及地质意义  

REEF-BUILDER AND-DWELLER COMPOSITION OF THE TUBIPHYTES REEFS OF THE ANISIAN STAGE(MIDDLE TRIASSIC)IN XINGYI CITY,GUIZHOU PROVINCE AND ADJACENT REGIONS AND THEIR GEOLOGICAL SIGNIFICANCE

作　　者：贺箫 俞银银 贺永忠 冉维宇 陈明华 喻美艺[1] HE Xiao;YU Yinyin;HE Yongzhong;RAN Weiyu;CHEN Minghua;YU Meiyi(College of Resource and Environment Engineering,Guizhou University,Guiyang 550025;Guizhou Geological Survey,Guiyang 550081)

机构地区：[1]贵州大学资源与环境工程学院,贵阳550025 [2]贵州省地质调查院,贵阳550081

出　　处：《微体古生物学报》2021年第3期257-272,共16页Acta Micropalaeontologica Sinica

基　　金：贵州省科技支撑项目[2019]2851号和[2020]4Y003号联合资助。

摘　　要：黔西南兴义地区及邻区中三叠世安尼期台地边缘生物礁发育在上扬子台地西南缘,为大型堡礁。造礁生物主要为暗管管壳石Tubiphytes obscurus,鹿角状管壳石Tubiphytes alcicornis,以及脑型丛状管壳石Plexoramea cerebriformis,占造礁生物总量的90%以上。苔藓虫类Reptonoditrypa cautica,珊瑚类Pinacophyllum spizzensis,奥顿菌Ortonella sp.以及普拉塔拉丁管Ladinella porata等为次要造礁生物。此外,礁灰岩中还见棘皮动物、腹足动物、腕足动物和有孔虫等附礁生物。该生物礁为晚二叠世绝灭事件之后在中三叠世开始重新建立的台地边缘礁复合体。本次研究为中三叠世造礁生物种类的恢复提供了新材料,同时也填补了上扬子台地西南缘安尼期生物礁研究的空白。The Anisian Stage(Middle Triassic)Tubiphytes platform margin reef is a large-scale barrier reef that develops on the southwestern edge of the Upper Yangtze Platform.Tubiphytes are the primary reef-building organisms,including two genera and three species,such as Tubiphytes obscurus,Tubiphytes alcicornis and Plexoramea cerebriformis.These organisms account for more than 90% of the total reef-forming organisms.Reptonoditrypa cautica,Pinacophyllum spizzensis,Ladinella porata and Ortonella sp.are secondary reef-building organisms.The reef-dweller organisms,such as echinoderms,gastropods,brachiopods and foraminifers,also can be seen in the reef limestones.This reef is a platform margin reef complex re-established in the Middle Triassic after the end-Permian extinction event,and not found in this area in the Early Triassic.This study provides new materials for the reconstruction of the reef-builder composition of the Middle Triassic in the Xingyi City,Guizhou Province.It fills the research gap in Anisian Tubiphytes reef on the southwestern margin of the Upper Yangtze Platform.

关 键 词：造礁生物 管壳石 中三叠世 坡段组 贵州 

分 类 号：Q911[天文地球—古生物学与地层学] P534.51[生物学—古生物学]