KMS Nanjing Institute of Geology and Palaeonotology,CAS
Lopingian (Late Permian) stratigraphy, sedimentation and palaeobiogeography in southern Tibet | |
Shen, SZ (沈树忠); Cao, CQ (曹长群); Shi, GR; Wang, XD (王向东); Mei, SL | |
2003 | |
发表期刊 | NEWSLETTERS ON STRATIGRAPHY |
ISSN | 0078-0421 |
卷号 | 39期号:2-3页码:157-179 |
摘要 | Investigations of the Permian-Triassic sections and limestone blocks scattered in the Indus-Tsangbo Suture Zone in southern Tibet show widespread distribution of the Lopingian strata. The Lopingian deposits mostly contain rich brachiopod fossils and characteristic conodonts of the Mesogondolella sheni Zone of latest Changhsingian age in the topmost part. Brachiopod assemblages are largely comparable with those known from the upper Wargal and Chhidru Formations of the Salt Range, Pakistan, the Zewan Formation of Kashmir, the upper part of the Kuling Group in Spin of India and the Hardman Formation of Western Australia. A revised Lopingian (Late Permian) age is proposed for the Selong Group and its equivalents in southern Tibet. The Lopingian deposits in southern Tibet can be grouped into three different sedimentary types, each of which reflects different sedimentary environments from coastal to continental shelfal settings on the northern peri-Gondwanan margin. The Qubu-type sequence represents marine coastal and proximal barrier-lagoon sediments during a gradual sea-level rise. Micaceous sandstone and shale of regressive origin, with abundant palynomorphs and acritarches, developed during the Late Lopingian sea-level lowstand, which is followed by a major rapid transgression at the very end of Permian. The Selong-type sequence in the Selong area consists of bioclastic limestone and calcareous shale in the lower part, and crinoid grainstone in the upper part. The latter part is believed to have been formed in a high-energy inner shelf shoal setting. The Chitichun-type sequence, sporadically distributed along the Indus-Tsangbo suture zone as small limestone blocks, consists of pure bioclastic sparite with the ammonoid Cyclolobus fauna. It is interpreted as the break-up products of sea-mounts and/or small isolated carbonate build-ups developed on the outer shelfal settings. |
语种 | 英语 |
关键词[WOS] | Selong Xishan Section ; Global Stratotype Section ; Triassic Boundary ; Xizang Tibet ; Mass Extinction ; China ; Brachiopods ; Conodonts ; Gondwana ; Point |
WOS研究方向 | Geology |
WOS类目 | Geology |
WOS记录号 | WOS:000182374400004 |
出版者 | GEBRUDER BORNTRAEGER |
文献类型 | 期刊论文 |
条目标识符 | http://ir.nigpas.ac.cn/handle/332004/4509 |
专题 | 中国科学院南京地质古生物研究所 其他 |
通讯作者 | Shen, SZ (沈树忠) |
作者单位 | 1.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 2.Deakin Univ, Sch Ecol & Environm, Burwood, Vic 3125, Australia 3.China Univ Geosci, Sch Geosci, Beijing 100083, Peoples R China |
推荐引用方式 GB/T 7714 | Shen, SZ ,Cao, CQ ,Shi, GR,et al. Lopingian (Late Permian) stratigraphy, sedimentation and palaeobiogeography in southern Tibet[J]. NEWSLETTERS ON STRATIGRAPHY,2003,39(2-3):157-179. |
APA | Shen, SZ ,Cao, CQ ,Shi, GR,Wang, XD ,&Mei, SL.(2003).Lopingian (Late Permian) stratigraphy, sedimentation and palaeobiogeography in southern Tibet.NEWSLETTERS ON STRATIGRAPHY,39(2-3),157-179. |
MLA | Shen, SZ ,et al."Lopingian (Late Permian) stratigraphy, sedimentation and palaeobiogeography in southern Tibet".NEWSLETTERS ON STRATIGRAPHY 39.2-3(2003):157-179. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论