Back الوليوي (الكمبري) Arabic Камбрий етаж 5 Bulgarian Wuliuà Catalan Wuliuum German Wuliuense Spanish وولیوئن FA Wuliuen French Wuliuan ID ウリューアン Japanese 우류절 Korean
| Wuliuan | ||||||||||||||||||||||||||||||||||||||
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| Chronology | ||||||||||||||||||||||||||||||||||||||
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| Etymology | ||||||||||||||||||||||||||||||||||||||
| Name formality | Formal | |||||||||||||||||||||||||||||||||||||
| Name ratified | 2018[2] | |||||||||||||||||||||||||||||||||||||
| Former name(s) | Cambrian Stage 5 | |||||||||||||||||||||||||||||||||||||
| Usage information | ||||||||||||||||||||||||||||||||||||||
| Celestial body | Earth | |||||||||||||||||||||||||||||||||||||
| Regional usage | Global (ICS) | |||||||||||||||||||||||||||||||||||||
| Time scale(s) used | ICS Time Scale | |||||||||||||||||||||||||||||||||||||
| Definition | ||||||||||||||||||||||||||||||||||||||
| Chronological unit | Age | |||||||||||||||||||||||||||||||||||||
| Stratigraphic unit | Stage | |||||||||||||||||||||||||||||||||||||
| First proposed by | Zhao et al., 2018[3] | |||||||||||||||||||||||||||||||||||||
| Time span formality | Formal | |||||||||||||||||||||||||||||||||||||
| Lower boundary definition | FAD of Oryctocephalus indicus. | |||||||||||||||||||||||||||||||||||||
| Lower boundary GSSP | Wuliu-Zengjiayan, Guizhou, China 26°04′51″N 108°24′50″E / 26.0807°N 108.4138°E | |||||||||||||||||||||||||||||||||||||
| Lower GSSP ratified | 2018[2] | |||||||||||||||||||||||||||||||||||||
| Upper boundary definition | FAD of the Trilobite Ptychagnostus atavus | |||||||||||||||||||||||||||||||||||||
| Upper boundary GSSP | Drumian section, Wheeler Shale, Utah, U.S.A. 39°30′42″N 112°59′29″W / 39.5117°N 112.9915°W | |||||||||||||||||||||||||||||||||||||
| Upper GSSP ratified | 2006[4] | |||||||||||||||||||||||||||||||||||||
The Wuliuan stage is the fifth stage of the Cambrian, and the first stage of the Miaolingian Series of the Cambrian. It was formally defined by the International Commission on Stratigraphy in 2018.[5] Its base is defined by the first appearance of the trilobite species Oryctocephalus indicus; it ends with the beginning of the Drumian Stage, marked by the first appearance of the trilobite Ptychagnostus atavus around 504.5 million years ago.[6]
The 'golden spike' that formally defines the base of the age is driven into the Wuliu-Zengjiayan (乌溜-曾家崖) section of the Kaili formation, near Balang Village in the Miaoling Mountains, Guizhou, China.[7]
- ^ "International Chronostratigraphic Chart" (PDF). International Commission on Stratigraphy. September 2023. Retrieved December 16, 2024.
- ^ a b Yuanlong Zhao; Jinliang Yuan; Loren E. Babcock; Qingjun Guo; Jin Peng; Leiming Yin; Xinglian Yang; Shanchi Peng; Chunjiang Wang; Robert R. Gaines; Jorge Esteve; Tongsu Tai; Ruidong Yang; Yue Wang; Haijing Sun; Yuning Yang (June 2019). "Global Standard Stratotype-Section and Point (GSSP) for the conterminous base of the Miaolingian Series and Wuliuan Stage (Cambrian) at Balang, Jianhe, Guizhou, China" (PDF). Episodes. 42 (2): 165–184. doi:10.18814/epiiugs/2019/019013. Archived (PDF) from the original on 2022-03-04. Retrieved 2024-03-28.
- ^ Yuanlong, Zhao; Jinliang, Yuan; Babcock, Loren; Qingjun, Guo; Jin, Peng; Leiming, Yin; Xinglian, Yang; Chunjiang, Wang; Gaines, Robert; Esteve, Jorge; Ruidong, Yang; Yuning, Yang; Haijing, Sun; Tongsu, Tai. "Global Standard Stratotype-Section and Point (GSSP) for the conterminous base of the Miaolingian Series and Wuliuan Stage (Cambrian) at Balang, Jianhe, Guizhou, China" (PDF). Epizodes. 42 (2): 1–20. Archived (PDF) from the original on 2022-03-04.
- ^ Babcock, Loren; Robison, Richard; Rees, Margaret; Peng, Shanchi; Saltzman, Matthew (June 2007). "The Global boundary Stratotype Section and Point (GSSP) of the Drumian Stage (Cambrian) in the Drum Mountains, Utah, USA" (PDF). Episodes. 30 (2): 84–94. doi:10.18814/epiiugs/2007/v30i2/003. Archived (PDF) from the original on 2016-04-09. Retrieved 2024-03-28.
- ^ "ChronostratChart2018-08" (PDF). International Commission on Stratigraphy. Archived from the original (PDF) on 31 July 2018.
- ^ "GSSP Table - Paleozoic Era". Archived from the original on 2023-10-08. Retrieved 2024-03-28.
- ^ Ahlberg, Per; Babcock, Loren E. "Subcommission on Cambrian Stratigraphy Annual Report 2017" (PDF). International Commission on Stratigraphy. Archived (PDF) from the original on 2023-07-16. Retrieved 2024-03-28.