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A carbon-isotope perturbation at the Pliensbachian–Toarcian boundary: evidence from the Lias Group, NE England
Abstract
A perturbation in the carbon-isotope record at the time of the Pliensbachian–Toarcian boundary (~ 184 Ma) in the Early Jurassic is reported, based on new data from Yorkshire, England. Two sharp δ 13 C org negative excursions, each with a magnitude of ~ −2.5 ‰ and reaching minimum values of −28.5 ‰, are recorded in the bulk organic-matter record in sediments of latest Pliensbachian to earliest Toarcian age. A similar pattern of negative carbon-isotope excursions has been observed at the stage boundary in the SW European section at Peniche, Portugal in δ 13 C carbonate, δ 13 C wood and δ 13 C brachiopod records. The isotopic excursion is of interest when considering the genesis and development of the later Toarcian Oceanic Anoxic Event (OAE), as well as the second-order global extinction event that spans the stage boundary. Furthermore, the isotope excursion potentially provides a chemostratigraphic marker for recognition of the stage boundary, which is currently achieved on the basis of different ammonite faunas in the NW European and Tethyan realms.
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Bailey, T. R., Rosenthal, Y., McArthur, J. M., van de Schootbrugge, B., & Thirlwall, M. F. (2003) · Earth and Planetary Science Letters · doi:10.1016/s0012-821x(03)00278-4 · Cited by 361
Cited by
Saltzman, M. R., & Thomas, E. (2012) · The Geologic Time Scale · doi:10.1016/b978-0-444-59425-9.00011-1 · Cited by 436
Korte, C., & Hesselbo, S. P. (2011) · Paleoceanography · doi:10.1029/2011pa002160 · Cited by 273
Self-citationGómez, J. J., Comas-Rengifo, M. J., & Goy, A. (2016) · Climate of the Past · doi:10.5194/cp-12-1199-2016 · Cited by 124
Fantasia, A., Adatte, T., Spangenberg, J. E., Font, E., Duarte, L. V., & Föllmi, K. B. (2019) · Earth-Science Reviews · doi:10.1016/j.earscirev.2019.102932 · Cited by 111
Metadata
- Authors
- LITTLER, K., HESSELBO, S. P., & JENKYNS, H. C.
- Venue
- Geological Magazine
- Publisher
- Cambridge University Press (CUP)
- Published
- 2009-10-05
- Volume
- 147
- Issue
- 2
- Pages
- 181-192
- ISSN
- 0016-7568 (ISSN-L)
- 1469-5081
- OpenAlex
- W1984441670
- Cited by
- 180
- References
- 1
- FWCI
- 4.97
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: A carbon-isotope perturbation at the Pliensbachian–Toarcian boundary: evidence from the Lias Group, NE England. https://app.cochat.ai/papers/10.1017/s0016756809990458
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- LITTLER, K., HESSELBO, S. P., & JENKYNS, H. C. (2010). A carbon-isotope perturbation at the Pliensbachian–Toarcian boundary: evidence from the Lias Group, NE England. Geological Magazine. https://doi.org/10.1017/s0016756809990458
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