Carnian

Carnian
Carnian
~237 – ~227 Ma PreꞒ Ꞓ O S D C P T J K Pg N
	Alluvial plain red clays of the Travenanzes Formation, upper Carnian, the Dolomites, northern Italy
Chronology
←	Permian-Triassic extinction event
←	Smithian–Spathian boundary event
←	Carnian pluvial episode
←	Full recovery of woody trees
←	Coals return
←	Scleractinian; corals & calcified sponges
←	Triassic–Jurassic extinction event
←	Manicouagan impact
	Subdivision of the Triassic according to the ICS, as of 2023.; Vertical axis scale: millions of years ago.;
Etymology
Name formality	Formal
Alternate spelling(s)	Karnian
Usage information
Celestial body	Earth
Regional usage	Global (ICS)
Time scale(s) used	ICS Time Scale
Definition
Chronological unit	Age
Stratigraphic unit	Stage
Time span formality	Formal
Lower boundary definition	FAD of the Ammonite Daxatina canadensis
Lower boundary GSSP	Prati di Stuores, Dolomites, Italy; 46°31′37″N 11°55′49″E / 46.5269°N 11.9303°E
Lower GSSP ratified	2008
Upper boundary definition	Not formally defined
Upper boundary definition candidates	Base of Stikinoceras kerri ammonoid zone and near FAD of Metapolygnathus echinatus within the M. communisti conodont zones
Upper boundary GSSP candidate section(s)	Black Bear Ridge, British Columbia, Canada; Pizzo Mondello, Sicily, Italy;

The Carnian (less commonly, Karnian) is the lowermost stage of the Upper Triassic Series (or earliest age of the Late Triassic Epoch). It lasted from 237 to 227 million years ago (Ma).^[8] The Carnian is preceded by the Ladinian and is followed by the Norian. Its boundaries are not characterized by major extinctions or biotic turnovers, but a climatic event (known as the Carnian pluvial episode characterized by substantial rainfall) occurred during the Carnian and seems to be associated with important extinctions or biotic radiations.^[9] Another extinction occurred at the Carnian-Norian boundary, ending the Carnian age.^[10]

^ Widmann, Philipp; Bucher, Hugo; Leu, Marc; et al. (2020). "Dynamics of the Largest Carbon Isotope Excursion During the Early Triassic Biotic Recovery". Frontiers in Earth Science. 8 (196): 196. Bibcode:2020FrEaS...8..196W. doi:10.3389/feart.2020.00196.
^ McElwain, J. C.; Punyasena, S. W. (2007). "Mass extinction events and the plant fossil record". Trends in Ecology & Evolution. 22 (10): 548–557. doi:10.1016/j.tree.2007.09.003. PMID 17919771.
^ Retallack, G. J.; Veevers, J.; Morante, R. (1996). "Global coal gap between Permian–Triassic extinctions and middle Triassic recovery of peat forming plants". GSA Bulletin. 108 (2): 195–207. Bibcode:1996GSAB..108..195R. doi:10.1130/0016-7606(1996)108<0195:GCGBPT>2.3.CO;2. Retrieved 2007-09-29.
^ Payne, J. L.; Lehrmann, D. J.; Wei, J.; Orchard, M. J.; Schrag, D. P.; Knoll, A. H. (2004). "Large Perturbations of the Carbon Cycle During Recovery from the End-Permian Extinction". Science. 305 (5683): 506–9. Bibcode:2004Sci...305..506P. doi:10.1126/science.1097023. PMID 15273391. S2CID 35498132.
^ Ogg, James G.; Ogg, Gabi M.; Gradstein, Felix M. (2016). "Triassic". A Concise Geologic Time Scale: 2016. Elsevier. pp. 133–149. ISBN 978-0-444-63771-0.
^ Mietto, Paolo; Manfrin, Stefano; Preto, Nereo; Rigo, Manuel; Roghi, Guido; Furin, Stefano; Gianolla, Piero; Posenato, Renato; Muttoni, Giovanni; Nicora, Alda; Buratti, Nicoletta; Cirilli, Simonetta; Spötl, Christoph; Ramezani, Jahandar; Bowring, Samuel (September 2012). "The Global Boundary Stratotype Section and Point (GSSP) of the Carnian Stage (Late Triassic) at Prati Di Stuores/Stuores Wiesen Section (Southern Alps, NE Italy)" (PDF). Episodes. 35 (3): 414–430. doi:10.18814/epiiugs/2012/v35i3/003. Retrieved 13 December 2020.
^ ^a ^b ^c ^d "Global Boundary Stratotype Section and Point". International Commission of Stratigraphy. Retrieved 23 December 2020.
^ "Ics-chart".
^ Dal Corso, Jacopo; Bernardi, Massimo; Sun, Yadong; Song, Haijun; Seyfullah, Leyla J.; Preto, Nereo; Gianolla, Piero; Ruffell, Alastair; Kustatscher, Evelyn; Roghi, Guido; Merico, Agostino (2020). "Extinction and dawn of the modern world in the Carnian (Late Triassic)". Science Advances. 6 (38): eaba0099. Bibcode:2020SciA....6...99D. doi:10.1126/sciadv.aba0099. PMC 7494334. PMID 32938682.
^ Onoue, Tetsuji; Zonneveld, John-Paul; Orchard, Michael J.; Yamashita, Misa; Yamashita, Katsuyuki; Sato, Honami; Kusaka, Soichiro (1 January 2016). "Paleoenvironmental changes across the Carnian/Norian boundary in the Black Bear Ridge section, British Columbia, Canada". Palaeogeography, Palaeoclimatology, Palaeoecology. 441: 721–733. Bibcode:2016PPP...441..721O. doi:10.1016/j.palaeo.2015.10.008. Retrieved 24 January 2023.

[1] Widmann, Philipp; Bucher, Hugo; Leu, Marc; et al. (2020). "Dynamics of the Largest Carbon Isotope Excursion During the Early Triassic Biotic Recovery". Frontiers in Earth Science. 8 (196): 196. Bibcode:2020FrEaS...8..196W. doi:10.3389/feart.2020.00196.

[McElwain2007-2] McElwain, J. C.; Punyasena, S. W. (2007). "Mass extinction events and the plant fossil record". Trends in Ecology & Evolution. 22 (10): 548–557. doi:10.1016/j.tree.2007.09.003. PMID 17919771.

[Retallack1996-3] Retallack, G. J.; Veevers, J.; Morante, R. (1996). "Global coal gap between Permian–Triassic extinctions and middle Triassic recovery of peat forming plants". GSA Bulletin. 108 (2): 195–207. Bibcode:1996GSAB..108..195R. doi:10.1130/0016-7606(1996)108<0195:GCGBPT>2.3.CO;2. Retrieved 2007-09-29.

[Payne2004-4] Payne, J. L.; Lehrmann, D. J.; Wei, J.; Orchard, M. J.; Schrag, D. P.; Knoll, A. H. (2004). "Large Perturbations of the Carbon Cycle During Recovery from the End-Permian Extinction". Science. 305 (5683): 506–9. Bibcode:2004Sci...305..506P. doi:10.1126/science.1097023. PMID 15273391. S2CID 35498132.

[5] Ogg, James G.; Ogg, Gabi M.; Gradstein, Felix M. (2016). "Triassic". A Concise Geologic Time Scale: 2016. Elsevier. pp. 133–149. ISBN 978-0-444-63771-0.

[6] Mietto, Paolo; Manfrin, Stefano; Preto, Nereo; Rigo, Manuel; Roghi, Guido; Furin, Stefano; Gianolla, Piero; Posenato, Renato; Muttoni, Giovanni; Nicora, Alda; Buratti, Nicoletta; Cirilli, Simonetta; Spötl, Christoph; Ramezani, Jahandar; Bowring, Samuel (September 2012). "The Global Boundary Stratotype Section and Point (GSSP) of the Carnian Stage (Late Triassic) at Prati Di Stuores/Stuores Wiesen Section (Southern Alps, NE Italy)" (PDF). Episodes. 35 (3): 414–430. doi:10.18814/epiiugs/2012/v35i3/003. Retrieved 13 December 2020.

[GSSP_Web-7] "Global Boundary Stratotype Section and Point". International Commission of Stratigraphy. Retrieved 23 December 2020.

[8] "Ics-chart".

[dawn-9] Dal Corso, Jacopo; Bernardi, Massimo; Sun, Yadong; Song, Haijun; Seyfullah, Leyla J.; Preto, Nereo; Gianolla, Piero; Ruffell, Alastair; Kustatscher, Evelyn; Roghi, Guido; Merico, Agostino (2020). "Extinction and dawn of the modern world in the Carnian (Late Triassic)". Science Advances. 6 (38): eaba0099. Bibcode:2020SciA....6...99D. doi:10.1126/sciadv.aba0099. PMC 7494334. PMID 32938682.

[10] Onoue, Tetsuji; Zonneveld, John-Paul; Orchard, Michael J.; Yamashita, Misa; Yamashita, Katsuyuki; Sato, Honami; Kusaka, Soichiro (1 January 2016). "Paleoenvironmental changes across the Carnian/Norian boundary in the Black Bear Ridge section, British Columbia, Canada". Palaeogeography, Palaeoclimatology, Palaeoecology. 441: 721–733. Bibcode:2016PPP...441..721O. doi:10.1016/j.palaeo.2015.10.008. Retrieved 24 January 2023.

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