The DOI matches its Crossref record; 78 of the 78 references it cites were found in a registry or an index.
Methane Release from Igneous Intrusion of Coal during Late Permian Extinction Events
Abstract
Unusually large and locally variable carbon isotope excursions coincident with mass extinctions at the end of the Permian Period (253 Ma) and Guadalupian Epoch (260 Ma) can be attributed to methane outbursts to the atmosphere. Methane has isotopic values (δ13C) low enough to reduce to feasible amounts the carbon required for isotopic mass balance. The duration of the carbon isotopic excursions and inferred methane releases are here constrained to <10,000 yr by counting annual varves in lake deposits and by estimating peat accumulation rates. On paleogeographic maps, the most marked carbon isotope excursions form linear arrays back to plausible methane sources: end‐Permian Siberian Traps and Longwood‐Bluff intrusions of New Zealand and end‐Guadalupian Emeishan Traps of China. Intrusion of coal seams by feeder dikes to flood basalts could create successive thermogenic methane outbursts of the observed timing and magnitude, but these are unreasonably short times for replenishment of marine or permafrost sources of methane. Methane released by fracturing and heating of coal during intrusion of large igneous provinces may have been a planetary hazard comparable with bolide impact.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
(2005) · Cambridge University Press eBooks · doi:10.1017/cbo9780511536045 · Cited by 3,005
Impact cratering—A geologic process
Lipschutz, M. E. (1989) · Geochimica et Cosmochimica Acta · doi:10.1016/0016-7037(89)90150-6 · Cited by 2,243
Impact Cratering: A Geologic Process
Melosh, H. J. (1986) · Medical Entomology and Zoology · Cited by 2,077
Dickens, G. R., O'Neil, J. R., Rea, D. K., & Owen, R. M. (1995) · Paleoceanography · doi:10.1029/95pa02087 · Cited by 1,433
Large igneous provinces and mass extinctions
Wignall, P. B. (2001) · Earth-Science Reviews · doi:10.1016/s0012-8252(00)00037-4 · Cited by 1,212
Global estimates of hydrate-bound gas in marine sediments: how much is really out there?
Milkov, A. V. (2004) · Earth-Science Reviews · doi:10.1016/j.earscirev.2003.11.002 · Cited by 1,092
Release of methane from a volcanic basin as a mechanism for initial Eocene global warming
Svensen, H., Planke, S., Malthe-Sørenssen, A., Jamtveit, B., Myklebust, R., Rasmussen Eidem, T., & Rey, S. S. (2004) · Nature · doi:10.1038/nature02566 · Cited by 1,045
Atmospheric carbon dioxide and the ocean
Siegenthaler, U., & Sarmiento, J. L. (1993) · Nature · doi:10.1038/365119a0 · Cited by 1,021
Methane emissions from terrestrial plants under aerobic conditions
Keppler, F., Hamilton, J. T. G., Braß, M., & Röckmann, T. (2006) · Nature · doi:10.1038/nature04420 · Cited by 999
Soils of the Past: An Introduction to Paleopedology
Retallack, G. J. (2001) · Wiley eBooks · doi:10.1002/9780470698716 · Cited by 880
Self-citation
Cited by
Quantitative paleoenvironmental and paleoclimatic reconstruction using paleosols
Sheldon, N. D., & Tabor, N. J. (2009) · Earth-Science Reviews · doi:10.1016/j.earscirev.2009.03.004 · Cited by 981
Linking mantle plumes, large igneous provinces and environmental catastrophes
Sobolev, S. V., Sobolev, A. V., Kuzmin, D. V., Krivolutskaya, N. A., Petrunin, A. G., Arndt, N. T., Radko, V. A., & Vasiliev, Y. R. (2011) · Nature · doi:10.1038/nature10385 · Cited by 537
Recognition of peat depositional environments in coal: A review
Dai, S., Bechtel, A., Eble, C. F., Flores, R. M., French, D., Graham, I. T., Hood, M. M., Hower, J. C., Korasidis, V. A., Moore, T. A., et al. (2020) · International Journal of Coal Geology · doi:10.1016/j.coal.2019.103383 · Cited by 448
The Emeishan large igneous province: A synthesis
Shellnutt, J. G. (2014) · Geoscience Frontiers · doi:10.1016/j.gsf.2013.07.003 · Cited by 438
Volcanism, Mass Extinction, and Carbon Isotope Fluctuations in the Middle Permian of China
Wignall, P. B., Sun, Y., Bond, D. P. G., Izon, G., Newton, R. J., Védrine, S., Widdowson, M., Ali, J. R., Lai, X., Jiang, H., et al. (2009) · Science · doi:10.1126/science.1171956 · Cited by 368
Metadata
- Authors
- Retallack, G. J., & Jahren, A. H.
- Venue
- The Journal of Geology
- Publisher
- University of Chicago Press
- Published
- 2008-01
- Volume
- 116
- Issue
- 1
- Pages
- 1-20
- ISSN
- 0022-1376 (ISSN-L)
- 1537-5269
- OpenAlex
- W2033591258
- Cited by
- 254
- References
- 78
- FWCI
- 8.14
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Methane Release from Igneous Intrusion of Coal during Late Permian Extinction Events. https://app.cochat.ai/papers/10.1086/524120
- The paper
- Retallack, G. J., & Jahren, A. H. (2008). Methane Release from Igneous Intrusion of Coal during Late Permian Extinction Events. The Journal of Geology. https://doi.org/10.1086/524120
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
