Mulde event
Template:Short description Script error: No such module "Graphical timeline". The Mulde event was an anoxic event,[1] and marked the second of three1 relatively minor mass extinctions (the Ireviken, Mulde, and Lau events) during the Silurian period. It coincided with a global drop in sea level, and is closely followed by an excursion[<span title="Script error: No such module "decodeEncode".">clarification needed] in geochemical isotopes. Its onset is synchronous with the deposition of the Fröjel Formation in Gotland.[1] Perceived extinction in the conodont fauna, however, likely represent a change in the depositional environment of sedimentary sequences rather than a genuine biological extinction.[2]
Higher resolution δ13C isotope analysis identifies differences in the organic and carbonate carbon isotope curves (Δ13C), allowing the inference of a sustained drop in CO2 levels coincident with the extinction once sedimentological data are taken into account.[3]
Notes
Page Template:Citation/styles.css has no content.^1The Ireviken, Mulde, and Lau events were all closely followed by isotopic excursions.
References
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- ^ a b Page Module:Citation/CS1/styles.css has no content.Samtleben, C.; Munnecke, A.; Bickert, T. (2000). "Development of facies and C/O-isotopes in transects through the Ludlow of Gotland: Evidence for global and local influences on a shallow-marine environment". Facies. 43 (1): 1–38. Bibcode:2000Faci...43....1S. doi:10.1007/BF02536983. S2CID 130640332.
- ^ Page Module:Citation/CS1/styles.css has no content.Jarochowska, Emilia; Ray, David C; Röstel, Philipp; Worton, Graham; Munnecke, Axel (2017). "Harnessing stratigraphic bias at the section scale: Conodont diversity in the Homerian (Silurian) of the Midland Platform, England". Palaeontology. 61: 57–76. doi:10.1111/pala.12326. S2CID 135200300.
- ^ Page Module:Citation/CS1/styles.css has no content.Biebesheimer, Ellie J.; Cramer, Bradley D.; Calner, Mikael; Barnett, Bruce A.; Oborny, Stephan C.; Bancroft, Alyssa M. (2021). "Asynchronous δ13Ccarb and δ13Corg records during the onset of the Mulde (Silurian) positive carbon isotope excursion from the Altajme core, Gotland, Sweden". Chemical Geology. 576 120256. Bibcode:2021ChGeo.57620256B. doi:10.1016/j.chemgeo.2021.120256. ISSN 0009-2541. S2CID 234817512.
