The Hettangian corals of the Isle of Skye (Scotland): An opportunity to better understand the palaeoenvironmental conditions during the aftermath of the Triassic–Jurassic boundary crisis

Gretz, Mélanie; Lathuilière, Bernard; Martini, Rossana; Bartolini, Annachiara

doi:10.1016/j.palaeo.2013.02.029

Cited by 18 publications

(7 citation statements)

References 58 publications

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“…This is due in part to the rarity of good Triassic-Jurassic boundaries, the rarity of shallow-water environments, and lack of precise dating (see following). Compared to Panthalassa, recovery in the Tethys appears to have been faster than expected (Kiessling et al, 2007;Lathuilière and Marchal, 2009;Gretz et al, 2013).…”

Section: Significance Of Zircon Ages To Early Jurassic Coral and Reefsmentioning

confidence: 70%

Detrital zircon U-Pb geochronology of the Sierra de Santa Rosa Formation, Sonora, Mexico, and implications for an Early Jurassic retroarc basin

et al. 2017

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A succession of Triassic to Jurassic strata occurs in the vicinity of Caborca, Mexico, where the Antimonio, Río Asunción, and Sierra de Santa Rosa Formations contain a nearly continuous marine section deposited in previously reported shallow basin environments. The Sierra de Santa Rosa Formation is known to be Early Jurassic, but with an 18 m.y. uncertainty in age. Here we establish the ages of the three members of the Sierra de Santa Rosa Formation as early Sinemurian to middle Toarcian. Detrital zircon U-Pb geochronology from a set of 2334 grains along with ammonite zonation is used to establish depositional ages and to support the interpretation of the formation as being deposited in a retroarc basin. We find 2 zircon populations of 199 Ma and 192 Ma that mark the onset of Early Jurassic magmatic activity in the formation. Older Neoproterozoic and Early Devonian populations not attributable to local sources imply a robust Early Jurassic exchange with southwestern Laurentian eolianites. Here we also establish the ages of three fossiliferous units containing solitary and colonial corals in the Sierra de Santa Rosa Formation. The end-Triassic mass extinction decimated coral reefs worldwide and reports of Early Jurassic corals have been particularly rare in North America. The ages indicate an earlier regional recovery for North American corals than previously proposed; this has implications for understanding postextinction reef recovery.

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Section: Significance Of Zircon Ages To Early Jurassic Coral and Reefsmentioning

confidence: 70%

Detrital zircon U-Pb geochronology of the Sierra de Santa Rosa Formation, Sonora, Mexico, and implications for an Early Jurassic retroarc basin

et al. 2017

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“…Whatever their position along the platform, all these reefs are commonly composed of microsolenids and stylinids, highlighting mixed photo-heterotrophic coral assemblages and nutrient supplies (Olivier et al 2004a). In nutrientrich waters, the hypothesis that some Jurassic corals had a facultative symbiosis with zooxanthellae and shifted from autotrophic to heterotrophic behaviour, cannot be rejected (Gretz et al 2013). Nowadays, azooxanthellate colonies capable of participating in the building of reef frameworks are notably represented by dendroid morphologies of the genus Lophelia (Chevalier 1987, Stanley & Cairns 1988, Cairns & Kitahara 2012.…”

Section: Reef Development With a Moderateto High-terrigenous Inputmentioning

confidence: 99%

Distribution of coral-microbialite reefs along the French Jura platform during the Bimammatum Zone (Oxfordian, Late Jurassic)

Olivier¹

2019

Bull. Geosci.

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In the Late Jurassic, carbonate platforms and reefs were widespread in the various known geographical realms, north Tethysian, south Tethysian, north Atlantic, and Pacific (Leinfelder 2001). The many studies conducted by R. Leinfelderʼs German team during the 1990s have shown that these reefs were diversified and occupied specific ecological niches: stromatolites near the shore line, coral reefs in relatively shallow and proximal zones, siliceous sponge bioherms in deeper and distal parts of the platform, and microbial mounds in deep epicontinental

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“…After the T-J boundary mass extinction crisis, coral recovery started earlier in the Tethys and neighbouring epicontinental seas (West Europe, southern Europe, Carpathians, and North Africa) (Kiessling et al 2009;Melnikova and Roniewicz 2012). The magnitude of coral extinction rate during the T-J boundary is difficult to evaluate because of discrepancies in Triassic and Jurassic taxonomies (Kiessling et al 2009;Lathuilie `re and Marchal 2009;Gretz et al 2013). Lathuilie `re andMarchal (2009) reported that the extinction rate at the T-J boundary ranged between 50 and 60% at genus level.…”

Section: Coral Evolution and The T-j Boundary Crisismentioning

confidence: 99%

“…The Early Jurassic is traditionally considered as a ''reef gap'' (Flu ¨gel and Kiessling 2002;Stanley 2001). However, at several sites of Early Jurassic coral occurrences have been reported (e.g., Lathuilie `re and Marchal 2009; Melnikova and Roniewicz 2012;Gretz et al 2013). Nevertheless, the global insight is that Hettangian and Sinemurian reefs were small and scarce on the Earth.…”

mentioning

confidence: 99%

“…The Early Liassic witnessed a profound modifications in coral reefs composition, biodiversity, architecture, skeletal density, and ecological parameters (Kiessling et al 2007). Their ecology, taxonomy, and paleobiogeography are still poorly investigated (Stanley and McRoberts 1993;Kiessling et al 2009;Gretz et al 2013Gretz et al , 2015. The Lower Liassic reef crisis marked (i) a break between different types of reefs, (ii) a disruption between the declining Triassic and the emergence of new Jurassic coral families, and (iii) a break between two periods of widespread reef building in the Upper Triassic and Middle Jurassic.…”

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confidence: 99%

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Coral- and oyster-microbialite patch reefs in the aftermath of the Triassic–Jurassic biotic crisis (Sinemurian, Southeast France)

et al. 2018

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The end of the Triassic and the Early Jurassic are intervals characterised by profound biotic and environmental changes, accompanied by dramatic decreases in marine fauna diversity. Corals were strongly affected and assemblages underwent a severe reduction; compared with those of the Upper Triassic, the Early Jurassic is traditionally defined as holding a ''reef gap''. A Sinemurian coral-microbialites patch reef, located in southern France in the He ´rault department (Le Perthus locality), is here described. This bioconstruction developed in a shallow mixed siliciclastic-carbonate inner ramp setting. The reef volume is composed of up to 70% of an intercoral facies mostly microbialites, with subordinated sediments (approximately 20-30% of the intercoral facies). Therefore, the patch reef can be defined as a coral-microbialite bioconstruction, in which microbialites were the main framebuilders. The coral assemblage has low diversity and is dominated by massive to branching colonies of Chondrocoenia clavellata. This highlights the reef diversity after the T/J boundary crisis. The Le Perthus patch reef could have acted as an edge for the dominant currents and probably induced reductions in hydrodynamic energy and sedimentation on one of its sides. Consequently, it could have triggered the growth of small lateral bioconstructions, composed of oysters and microbialites, uniquely on one of its sides. The evolution of the facies shows that the Le Perthus patch reef grew in a shallowing-upward setting accompanied by an increase in siliciclastic inputs. The rate of bioerosion and the faunal assemblage suggest that the bioconstructions could have been developed in a mesotrophic environment.

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The Hettangian corals of the Isle of Skye (Scotland): An opportunity to better understand the palaeoenvironmental conditions during the aftermath of the Triassic–Jurassic boundary crisis

Cited by 18 publications

References 58 publications

Detrital zircon U-Pb geochronology of the Sierra de Santa Rosa Formation, Sonora, Mexico, and implications for an Early Jurassic retroarc basin

Detrital zircon U-Pb geochronology of the Sierra de Santa Rosa Formation, Sonora, Mexico, and implications for an Early Jurassic retroarc basin

Distribution of coral-microbialite reefs along the French Jura platform during the Bimammatum Zone (Oxfordian, Late Jurassic)

Coral- and oyster-microbialite patch reefs in the aftermath of the Triassic–Jurassic biotic crisis (Sinemurian, Southeast France)

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