Biostratigraphy and Microfacies of Upper Cretaceous Oceanic Red Beds in the Northern Tethyan Himalaya: A Case Study from the Zhangguo Section, Gyangze, Southern Tibet, China

doi:10.3390/app15137136

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	Biostratigraphy and Microfacies of Upper Cretaceous Oceanic Red Beds in the Northern Tethyan Himalaya: A Case Study from the Zhangguo Section, Gyangze, Southern Tibet, China
	Li, Yuewei 1,2,3; Li, Guobiao 1,2; Ding, Jie 1,2; Xie, Dan 3; Wang, Tianyang 1,2; Baoke, Zhantu 1,2; Jia, Mengmeng 1,2; Wang, Chengshan 1,2
	2025-06-25
发表期刊	APPLIED SCIENCES-BASEL
卷号	15 期号:13 页码:27
通讯作者	Li, Guobiao(liguobiao@cugb.edu.cn)
摘要	The Cretaceous oceanic red beds (CORBs) and their implications for "oceanic oxic events" have been widely studied by geologists globally. In southern Tibet, CORBs are extensively distributed within the Upper Cretaceous strata of the northern Tethyan Himalaya (NTH). A well-exposed, CORB-bearing, mixed carbonate-shale sequence is found in the Zhangguo section of Rilang Township, Gyangze County. The Chuangde Formation in this section is characterized by well-preserved CORBs, which include reddish shale, limestone, marlstone, and interbedded siltstone. These CORBs are stratigraphically overlain by the Jiabula/Gyabula Formation (predominantly shale) and underlain by the Zongzhuo Formation ("m & eacute;lange"). However, the precise age, depositional environments, and regional/global correlations of these CORBs, as well as their implications for synchronous versus diachronous oceanic oxic events, remain to be fully understood. In this study, a comprehensive analysis of foraminiferal biostratigraphy and microfacies is conducted for the CORB-bearing Chuangde Formation and the upper Jiabula (Gyabula) Formation in the Zhangguo section. Five planktic foraminiferal biozones including Dicarinella asymetrica, Globotruncanita elevata, Contusotruncana plummerae, Radotruncana calcarata, and Globotruncanella havanensis are identified through detailed biostratigraphic analysis, confirming a Campanian age for the Chuangde Formation and its CORBs. These findings are broadly correlated with typical Upper Cretaceous CORBs in pelagic-hemipelagic settings across the NTH in southern Tibet. Nine microfacies and four facies associations are identified within the Upper Cretaceous strata of Gyangze and adjacent areas through field and petrographic analyses. Notably, it is indicated that planktic foraminiferal packstone/grainstone CORBs were deposited in outer shelf to upper slope environments, while radiolarian chert CORBs are inferred to have formed in deep-water, basinal settings below the carbonate compensation depth (CCD).
关键词	CORBs planktic foraminiferal biostratigraphy microfacies Late Cretaceous Zhangguo Tibet
DOI	10.3390/app15137136
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China ; Strategic Project of Science and Technology of Chinese Academy of Sciences[XDB050105003] ; National Basic Research Program of China[2012CB822001] ; [41972031] ; [41272030] ; [40972026]
项目资助者	National Natural Science Foundation of China ; Strategic Project of Science and Technology of Chinese Academy of Sciences ; National Basic Research Program of China
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:001526338400001
出版者	MDPI
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/24477
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Li, Guobiao
作者单位	1.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China 2.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Li, Yuewei,Li, Guobiao,Ding, Jie,et al. Biostratigraphy and Microfacies of Upper Cretaceous Oceanic Red Beds in the Northern Tethyan Himalaya: A Case Study from the Zhangguo Section, Gyangze, Southern Tibet, China[J]. APPLIED SCIENCES-BASEL,2025,15(13):27.
APA	Li, Yuewei.,Li, Guobiao.,Ding, Jie.,Xie, Dan.,Wang, Tianyang.,...&Wang, Chengshan.(2025).Biostratigraphy and Microfacies of Upper Cretaceous Oceanic Red Beds in the Northern Tethyan Himalaya: A Case Study from the Zhangguo Section, Gyangze, Southern Tibet, China.APPLIED SCIENCES-BASEL,15(13),27.
MLA	Li, Yuewei,et al."Biostratigraphy and Microfacies of Upper Cretaceous Oceanic Red Beds in the Northern Tethyan Himalaya: A Case Study from the Zhangguo Section, Gyangze, Southern Tibet, China".APPLIED SCIENCES-BASEL 15.13(2025):27.