Cambrian Series 2
Cambrian Series 2 | |||||||
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Chronology | |||||||
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Subdivision of the Cambrian according to the Epoch | |||||||
Stratigraphic unit | Series | ||||||
Time span formality | Formal | ||||||
Lower boundary definition | Not formally defined | ||||||
Lower boundary definition candidates | FAD of Trilobites | ||||||
Lower boundary GSSP candidate section(s) | None | ||||||
Upper boundary definition | FAD of Oryctocephalus indicus. | ||||||
Upper boundary GSSP | Wuliu-Zengjiayan, Guizhou, China 26°04′51″N 108°24′50″E / 26.0807°N 108.4138°E | ||||||
Upper GSSP ratified | 2018[2] |
Cambrian Series 2 is the unnamed 2nd series of the
Naming
The International Commission on Stratigraphy has not named the 2nd series of the Cambrian yet.[3] In part the new name will replace the older terms "Lower Cambrian" and "Early Cambrian". The nomenclature used in Siberia uses the term "Yakutian" for this series.[5]
Subdivisions
The 2nd series is currently subdivided by the
The Ordian stage, which is use in Australian chronostratigraphical scale, was originally supposed to be the lowest stage of the Miaolingian, but may belong to upper Series 2. As of 2024, the base of the Ordian is not defined yet.[7]
Biostratigraphy
The beginning of the 2nd series of the Cambrian is marked by the appearance of
The end of the 2nd series of the Cambrian is marked by the first major biotic extinction of the
References
- ^ "Chart/Time Scale". stratigraphy.org. International Commission on Stratigraphy.
- ^ Zhao; et al. (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: 165–184. Archived (PDF) from the original on 2022-03-04. Retrieved 2024-04-02.
- ^ a b c "GSSP Table - Paleozoic Era". Archived from the original on 2023-10-08. Retrieved 2024-04-02.
- ISSN 2391-5447.
- ^ a b "The 13th International Field Conference of the Cambrian Stage Subdivision Working Group" (PDF). Episodes. 31 (4): 440–441. Archived from the original (PDF) on 2014-11-05. Retrieved 2024-04-02.
- ^ doi:10.3140/bull.geosci.1274. Archived from the original(PDF) on 2024-01-18. Retrieved 2024-04-02.
- doi:10.1080/03115518.2024.2327045.)
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: CS1 maint: multiple names: authors list (link - .
- PMC 6874646.)
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: CS1 maint: multiple names: authors list (link - ^ Courtney Birksmith, Glenn A. Brock, Marissa J. Betts, James D. Holmes, Zhiliang Zhang (2023). "Chronostratigraphy of the Cambrian Series 2 -Miaolingian boundary, western Stansbury Basin, South Australia". Conference: Palaeo Down Under 3 at Perth, Western Australia.
{{cite web}}
: CS1 maint: multiple names: authors list (link)
External links
- "GSSP Table - Paleozoic Era". Archived from the original on 2023-10-08.
- "GSSPs - The Cambrian System 2019". International Commission on Stratigraphy. Archived from the original on 2023-07-21.