A carbon isotope reference scale for the Lower Cambrian succession in Siberia: report of IGCP Project 303
Abstract
Four sections from the mid-Atdabanian to lowest Toyonian (middle Cambrian) along the Lena River of Siberia were sampled for carbon isotope stratigraphy. These show a mainly heavy but highly oscillatory δ 13 C signature for the Atdabanian to mid-Botomian interval, coincident with the major phase of invertebrate innovation. A prolonged interval of negative δ 13 C followed until late Toyonian times, coincident with Botomian-Toyonian mass extinctions. Eleven carbon isotope cycles are identified through the lower Cambrian, which should now be tested for their utility in global correlation and relationship to bioevents in the Cambrian explosion.
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The Cambrian radiation interval shows prominent and frequent oscillations of the carbon isotope ratio.
“The Cambrian radiation interval shows prominent and frequent oscillations of the carbon isotope ratio”
From Chronology of early Cambrian biomineralization (2012) · cites this paper as Brasier et al . 1994 a,b
The high-resolution successions of δ13C peaks in Morocco and Siberia proved to be very similar, and their correlation resulted in a c. 525 Ma estimate of the age of the Nemakit-Daldynian-Tommotian boundary dated in Morocco to 524.837 ± 0.092 Ma.
“The high-resolution successions of δ 13 C peaks in Morocco and Siberia (Brasier et al . 1994 b ; Kouchinsky et al . 2007) proved to be very similar, and their correlation resulted in a c . 525 Maestimate of the age of the Nemakit-DaldynianTommotian boundary dated in Morocco to 524.837 ± 0.092 Ma”
From Chronology of early Cambrian biomineralization (2012) · cites this paper as Brasier et al . 1994 b
The most reliable first appearance of the mobergellids is in the lower D. lenaicus Zone of the Tommotian Stage (upper part of the Cambrian Stage 2), within the carbon isotope trough between peaks III and IV of the Siberian reference scale.
“The most reliable first appearance of the group is thus in the lower D. lenaicus Zoneof the Tommotian Stage (upper part of the Cambrian Stage 2), within the carbon isotope trough between peaks III and IV of the Siberian reference scale”
From Chronology of early Cambrian biomineralization (2012) · cites this paper as Brasier et al . 1994 a,b
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Brasier, M. D., Shields, G., Kuleshov, V. N., & Zhegallo, E. A. (1996) · Geological Magazine · doi:10.1017/s0016756800007603 · Cited by 331 · see citing works
Self-citationDerry, L. A., Brasier, M. D., Corfield, R. M., Rozanov, A. Y., & Zhuravlev, A. Y. (1994) · Earth and Planetary Science Letters · doi:10.1016/0012-821x(94)90178-3 · Cited by 266 · see citing works
Self-citationPlankton ecology and the Proterozoic-Phanerozoic transition
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Self-citationKOUCHINSKY, A., BENGTSON, S., PAVLOV, V., RUNNEGAR, B., TORSSANDER, P., YOUNG, E., & ZIEGLER, K. (2007) · Geological Magazine · doi:10.1017/s0016756807003354 · Cited by 110 · see citing works
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Zhuravlev, A. Y., Mitchell, E. G., Bowyer, F., Wood, R., & Penny, A. (2022) · Nature Communications · doi:10.1038/s41467-022-35283-5 · Cited by 24 · see citing works
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- Authors
- Brasier, M. D., Rozanov, A. Y., Zhuravlev, A. Y., Corfield, R. M., & Derry, L. A.
- Affiliations
- University of Oxford (GB)
- Institute of Paleontology A A Borisyak (RU)
- Centre National de la Recherche Scientifique (FR)
- Venue
- Geological Magazine
- Publisher
- Cambridge University Press (CUP)
- Published
- 1994-11
- Volume
- 131
- Issue
- 6
- Pages
- 767-783
- ISSN
- 0016-7568 (ISSN-L)
- 1469-5081
- OpenAlex
- W2007694132
- Cited by
- 99
- References
- 2
- Citations by year
- 2026: 1 · 2025: 4 · 2024: 2 · 2023: 6 · 2022: 5 · 2021: 5 · 2020: 3 · 2019: 4 · 2018: 2 · 2017: 3 · 2016: 5 · 2015: 1 · 2014: 1 · 2013: 4 · 2012: 1
- FWCI
- 5.35
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Geological Magazine (publishedVersion)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
- Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geochemical Analysis
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
- Keywords
- carbon isotope stratigraphy, Lower Cambrian, Atdabanian, Lena River, Siberia, mass extinction, Cambrian explosion, global correlation
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