Early Cretaceous monsoonal upwelling along the northern margin of the Gondwana continent: Evidence from radiolarian cherts
文献类型：期刊论文
| 作者 | Cui, Xiaohui1,2; Li, Xin2 ; Aitchison, Jonathan C.3; Luo, Hui2
|
| 刊名 | MARINE MICROPALEONTOLOGY
 |
| 出版日期 | 2023-05-01 |
| 卷号 | 181页码:17 |
| ISSN号 | 0377-8398 |
| 关键词 | Radiolarians Early cretaceous Chert geochemistry Monsoon Purang ophioliticme'lange Southern Tibet |
| DOI | 10.1016/j.marmicro.2023.102247 |
| 通讯作者 | Li, Xin(xinli@nigpas.ac.cn) ; Luo, Hui(huiluo@nigpas.ac.cn) |
| 英文摘要 | Radiolarian-bearing cherts are widely exposed in the volcanic-sedimentary sequences associated with the Purang ophiolitic melange in the western segment of the Yarlung Tsangpo suture zone. Highly diverse and well preserved Lower Cretaceous (Valanginian-Hauterivian) radiolarian assemblages that correlate to the Cecrops septemporatus Zone occur in bedded cherts in the Peiersanggangmu section of the southern Purang ophiolitic melange. Fifty-five species belonging to 38 genera, including characteristic species: Archaeodictyomitra apiarium (Rust), Cecrops septemporatus (Parona), Hemicryptocapsa capita Tan, Pseudodictyomitra carpatica (Lozyniak), and Svinitzium pseudopuga Dumitrica, have been recognized.Geochemistry of the cherts reveals high SiO2 contents (average: 92.23 wt%), Al/(Al + Fe + Mn) ratios, and low La-N/Ce-N ratios. Post Archean Australian Shale (PAAS) normalized rare earth element (REE) abundance patterns exhibit moderately positive Ce anomalies (mean Ce/Ce* =1.35) with relative enrichment in light rare earth elements (LREEs). These features are indicative of deposition in an oceanic basin close to a continental margin environment. Lithological characteristics and geochemical results suggest that the paleogeographical location for these radiolarian-bearing bedded cherts closely matches northern regions of the Indian continent, where existed enhanced upwelling activity and surface mixing resulting from monsoon activities. |
| WOS关键词 | TSANGPO SUTURE ZONE ; REY-RICH MUD ; RARE-EARTH ; DEPOSITIONAL-ENVIRONMENTS ; ELEMENT GEOCHEMISTRY ; PURANG OPHIOLITE ; LAGONEGRO BASIN ; SW TIBET ; EVOLUTION ; CONSTRAINTS |
| 资助项目 | Second Tibetan Plateau Scientific Expedition and Research[2019QZKK0706] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; National Natural Science Foundation of China[42172028] |
| WOS研究方向 | Paleontology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001000156700001 |
| 资助机构 | Second Tibetan Plateau Scientific Expedition and Research ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China |
| 源URL | [http://ir.nigpas.ac.cn/handle/332004/42117]  |
| 专题 | 中国科学院南京地质古生物研究所 |
| 通讯作者 | Li, Xin; Luo, Hui |
| 作者单位 | 1.Linyi Univ, Inst Geol & Paleontol, Linyi 276000, Shandong, Peoples R China 2.Nanjing Inst Geol & Palaeontol, Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 3.Univ Queensland, Sch Earth & Environm Sci, St Lucia, Qld 4072, Australia |
| 推荐引用方式 GB/T 7714 | Cui, Xiaohui,Li, Xin,Aitchison, Jonathan C.,et al. Early Cretaceous monsoonal upwelling along the northern margin of the Gondwana continent: Evidence from radiolarian cherts[J]. MARINE MICROPALEONTOLOGY,2023,181:17. |
| APA | Cui, Xiaohui,Li, Xin,Aitchison, Jonathan C.,&Luo, Hui.(2023).Early Cretaceous monsoonal upwelling along the northern margin of the Gondwana continent: Evidence from radiolarian cherts.MARINE MICROPALEONTOLOGY,181,17. |
| MLA | Cui, Xiaohui,et al."Early Cretaceous monsoonal upwelling along the northern margin of the Gondwana continent: Evidence from radiolarian cherts".MARINE MICROPALEONTOLOGY 181(2023):17. |
入库方式： OAI收割
来源：南京地质古生物研究所
浏览0
下载0
收藏0
其他版本
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。