Integrated “plume winter” scenario for the double-phased extinction during the Paleozoic–Mesozoic transition: The G-LB and P-TB events from a Panthalassan perspective

Isozaki, Yukio

doi:10.1016/j.jseaes.2009.05.006

Cited by 94 publications

(57 citation statements)

References 148 publications

(249 reference statements)

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“…Ultraplinian-type eruptions of felsic volcanoes at multiple sites in swarm may have driven severe environmental changes in the biosphere through volcanic hazards; e.g., toxic gas emissions, developing dust/aerosol screens in the stratosphere (blocking sunlight), and pouring acid rain. Their cascading effects on the environments, such as temperature drop, dim daylight, cessation of photosynthesis, and shortage in food, may have led to the decline in biodiversity both in the ocean and on land; i.e., a scenario called 'volcanic ash winter' (Isozaki, 2009). All the responsible mechanisms likely became effective by the global development of 'volcanic ash winter' conditions.…”

mentioning

confidence: 99%

Triggers of Permo-Triassic boundary mass extinction in South China: The Siberian Traps or Paleo-Tethys ignimbrite flare-up?

Zhong

et al. 2014

Lithos

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mentioning

confidence: 99%

Triggers of Permo-Triassic boundary mass extinction in South China: The Siberian Traps or Paleo-Tethys ignimbrite flare-up?

Zhong

et al. 2014

Lithos

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“…C: Composite stratigraphic column of the Middle Permian-Triassic paleo-atoll limestone in Japan, which corresponds to an OPS shallow . This set of data documented that midPanthalassa had experienced a two-phased extinction event across the P-T boundary, as well as the coeval circum-Pangean continental shelf, in other words, the greatest biotic crisis occurred in the global context (Isozaki 2009a). D: The Permian to Jurassic migration trail of the Akasaka paleo-seamount with atoll complex.…”

Section: End-guadalupian Kamura Cooling Eventmentioning

confidence: 91%

“…at the end of the Guadalupian, and suggest the appearance of a significant global cooling event (Isozaki 2009a).…”

Section: End-guadalupian Kamura Cooling Eventmentioning

confidence: 97%

“…This remarkable change of the representative Paleozoic plankton proves that the P-TB extinction occurred not only in marine organisms of shallow marine Pangean shelves but also in the vast mid-Panthalassan domains, and thus indeed had a global context. A possible link between this mid-oceanic plankton extinction and the superanoxia has been debated (Isozaki 2009a).…”

Section: Permo-triassic Boundary Superanoxia and Extinctionmentioning

confidence: 99%

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Memories of Pre-Jurassic Lost Oceans: How To Retrieve Them From Extant Lands

Isozaki

2014

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The information reflected in mid-oceanic sedimentary deposits provides critical constraints for reconstructing past global environmental changes. Available data from extant oceans, however, are limited to the Early Jurassic and younger ages, because older oceanic plates have been subducted. This article explains methods for obtaining information on pre-Jurassic mid-oceanic conditions by conducting fieldwork on older orogenic belts exposed on land. The key point is the identification of ancient accretionary complexes (AC), not along currently active margins but within older orogenic belts in continental domains, particularly by recognizing ocean plate stratigraphy (OPS) that contains mid-oceanic strata, as demonstrated by studies of on-land exposed ancient AC in Japan and elsewhere. In this paper, six examples of retrieved mid-oceanic sedimentary data are introduced, in which significant records on the following unique events in the pre-Jurassic world are archived: 1) the extinction-related Paleozoic–Mesozoic boundary superanoxia (based on data from the Jurassic AC in SW Japan); 2) the Permian Kamura cooling event in the mid-Panthalassa (ditto); 3) the Neoproterozoic snowball Earth evidence from the mid-Iapetus Ocean (based on data from the Neoproterozoic–Cambrian AC in Wales, UK); 4) the discovery of enigmatic Ediacaran (Neoproterozoic) microfossils from a mid-oceanic atoll complex (based on data from the Cambrian AC in southern Siberia, Russia); and 5) and 6) Early Archean (3.8 and 3.5 Ga) biogenic signatures in mid-oceanic deep-sea environments (based on data from the Eoarchean AC at Isua in Greenland, and the Paleoarchean one in Pilbara, Western Australia). These results demonstrate the great utility of OPS analysis for understanding pre-Jurassic lost oceans, including the early biological and environmental evolution of the globe. SOMMAIRELes informations enregistrées dans les dépôts sédimentaires médio-océaniques constituent des contraintes logiques qui permettent de reconstituer les changements environnementaux globaux. Cela dit, l’information sur de grands pans de fonds océaniques est limitée aux fonds océaniques Jurassiques précoces et plus jeunes, parce que les fonds océaniques plus anciens ont été subduits. Le présent article explique des méthodes permettant d’obtenir de l’information sur les milieux médio-océaniques pré-jurassiques par des levés de terrain sur des ceintures orogéniques affleurant sur terre. L’idée centrale consiste à circonscrire d’anciens complexes d’accrétion (AC), hors des marges actives actuelles, soit dans les ceintures orogéniques plus anciennes au sein des domaines continentaux, en y repérant des contextes stratigraphiques de plaques océaniques (OPS) qui renferment des strates médio-océaniques, comme ça a été fait lors études d’AC affleurant au Japon et ailleurs. Le présent document décrit six exemples de contextes stratigraphiques de plaques océaniques où on trouve des indices importants des événements pré-jurassiques uniques suivants : 1) l’extinction liée à la super-anoxie de la limite Paléozoïque-Mésozoïque (à partir des données d’un AC jurassique dans le sud-ouest du Japon); 2) l’épisode de refroidissement permien de Kamura du Panthalassa moyen; 3) l’épisode néoprotérozoïque de « Terre boule de neige » conservé par l’océan mi-japétien (selon les données de l’AC néoprotérozoïque-cambrien dans les Wales au Royaume-Uni); 4) la découverte de microfossiles édiacariens (Néoprotérozoïque) d’un complexe d’atolls médio-océaniques (selon les données d’un AC cambrien du sud-est sibérien, Russie); et 5 et 6) des signatures biogéniques de milieux médio-océaniques profonds de l’Archéen précoce (3,8 et 3,5 Ga) (selon les données d’un AC éoarchéen à Isua au Groenland, et d’un AC paléoarchéen à Pilbara, Australie). Ces résultats montrent la grande utilité de l'analyse de la stratigraphie des plaques océaniques pour comprendre les océans pré-Jurassique, de même que l'évolution des débuts de la vie et des milieux de vie sur Terre.

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“…Moreover, the largest global drop in sea-level or one major regression in Earth history occurred at the G/L boundary Ross, 1987, 1994;Chen et al, 1998;Hallam and Wignall, 1999;Haq and Schutter, 2008). Despite their importance (Isozaki, 2009b), the geological events occurring in this critical period have been far less studied, especially when compared with better documented PermianTriassic boundary events (e.g., Campbell et al, 1992;Renne et al, 1995;Bowring et al, 1998;Jin et al, 2000;Metcalfe et al, 2001;Mundil et al, 2001Mundil et al, , 2004Yin et al, 2001;Kamo et al, 2003Kamo et al, , 2006Shen et al, 2011). This is probably due to the rarity of continuous G/L boundary sections worldwide.…”

Section: Introductionmentioning

confidence: 99%

Mineralogy and geochemistry of claystones from the Guadalupian–Lopingian boundary at Penglaitan, South China: Insights into the pre-Lopingian geological events

Zhong

2013

Journal of Asian Earth Sciences

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Integrated “plume winter” scenario for the double-phased extinction during the Paleozoic–Mesozoic transition: The G-LB and P-TB events from a Panthalassan perspective

Cited by 94 publications

References 148 publications

Triggers of Permo-Triassic boundary mass extinction in South China: The Siberian Traps or Paleo-Tethys ignimbrite flare-up?

Triggers of Permo-Triassic boundary mass extinction in South China: The Siberian Traps or Paleo-Tethys ignimbrite flare-up?

Memories of Pre-Jurassic Lost Oceans: How To Retrieve Them From Extant Lands

Mineralogy and geochemistry of claystones from the Guadalupian–Lopingian boundary at Penglaitan, South China: Insights into the pre-Lopingian geological events

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