西藏日土县弗野地区二叠纪吞龙共巴组菊石化石新资料  

New data of Permian ammonite fossils in Fuye area,Rutog County,Tibet

作　　者：凌联海[1] 肖业斌[1] 凌国卿 杨世文[1] 

机构地区：[1]江西省地质调查研究院,江西南昌330030 [2]江西省地质矿产开发局赣东北大队,江西上饶334000

出　　处：《地质通报》2015年第9期1629-1635,共7页Geological Bulletin of China

基　　金：中国地质调查局项目(编号:1212011086066)

摘　　要：西藏日土县弗野地区早中二叠世吞龙共巴组为碎屑岩与灰岩互层,间夹海相火山枕状熔岩。新发现了火山岩型铜矿床,分布于班怒带西端北侧,海洋生物地理区属喜马拉雅区,具有过渡型生物群,以往采获的类化石跨时较长,难以对比。在赛龙一带首次发现浮游菊石:Prostacheoceras oschense化石,代表时代为Cisuralian统Kungurian阶。为该区吞龙共巴组时代归属及木实热不卡铜矿成矿时代提供了依据。介绍西藏日土县弗野地区早中二叠世吞龙共巴组地层剖面、古生物化石资料,并讨论其时代归属及地层划分与对比。The early Middle Permian Tunlonggongba Formation consists of alternating clasolite and limestone intercalated with marine volcanic pillow lava. The newly discovered volcanic copper deposit lies at the northern edge of the western side ofBangong CoNujiang River zone in Fuye area, Rutog County, Tibet, belongs to the Himalayan marine biogeographical region, and possesses transitional biotic characteristics. In the past, the collection of schwagerina often spanned a long time, and hence it is difficult to make comparison. The authors discovered the floating ammonite Prostacheoceras oschense firstly in Serlung area, which belongs to Cisuralian Kungurian, thus providing a basis for Tunlonggongba Formation age and mineralization time of mushirebuka copper. This paper describes stratigraphic section and fossil data of the early Middle Permian Tunlonggongba Formation, and also discusses the age of Tunlonggongba Formation as well as stratigraphic division and correlation of this formation.

关 键 词：二叠纪 菊石化石 弗野地区 西藏 

分 类 号：P534.52[天文地球—古生物学与地层学] Q911.2[天文地球—地质学]