Depositional characteristics and constraints on the mid-Valanginian demise of a carbonate platform in the intra-Tethyan domain, Circum-Rhodope Belt, northern Greece

Chatalov, Athanas; Bonev, Nikolay; Ivanova, Daria

doi:10.1016/j.cretres.2015.02.001

Cited by 31 publications

(23 citation statements)

References 212 publications

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“…Isolated bioconstructions were developed as buildups (BURCHETTE & WRIGHT, 1992). The microfacies and micropaleontological associations are similar with previous data presented by various authors from other outcrop areas in Romania (Median Dacides) (BUCUR, 1997;MIRCESCU et al, 2014;UNGUREANU et al, 2015;GRĂDINARU et al, 2016) and other parts of the Tethysian Realm (GAWLICK et al, 2004;RUS-CIADELLI & RICI, 2008;GAWLICK & SCHLAGINTWEIT, 2010;PETROVA et al, 2011PETROVA et al, , 2012CHATALOV et al, 2015;IVANOVA et al, 2015). They represent valuable correlation tools for future studies at the Jurassic-Cretaceous transition.…”

Section: Discussionsupporting

confidence: 79%

Upper Jurassic-Lower Cretaceous limestones from the Hăghimaș Massif (Eastern Carpathians, Romania): Microfacies, microfossils and depositional environments

Neamţu¹

2019

Carnets géol.

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Section: Discussionsupporting

confidence: 79%

Upper Jurassic-Lower Cretaceous limestones from the Hăghimaș Massif (Eastern Carpathians, Romania): Microfacies, microfossils and depositional environments

Neamţu¹

2019

Carnets géol.

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“…However, the Early Cretaceous also saw a dramatic reduction in carbonate production, with a series of repeated 'biocalcification crises', notably in the Valanginian and Aptian (Weissert & Erba, 2004). 'Disaster deposits' from the Tethys Ocean resulted from localised but dramatic sea-level falls and cooling episodes (Chatalov, Bonev & Ivanova, 2015). …”

Section: Environmental Changes During the Late Jurassic-early Crementioning

confidence: 99%

Biotic and environmental dynamics through the Late Jurassic–Early Cretaceous transition: evidence for protracted faunal and ecological turnover

et al. 2016

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The Late Jurassic to Early Cretaceous interval represents a time of environmental upheaval and cataclysmic events, combined with disruptions to terrestrial and marine ecosystems. Historically, the Jurassic/Cretaceous (J/K) boundary was classified as one of eight mass extinctions. However, more recent research has largely overturned this view, revealing a much more complex pattern of biotic and abiotic dynamics than has previously been appreciated. Here, we present a synthesis of our current knowledge of Late Jurassic-Early Cretaceous events, focusing particularly on events closest to the J/K boundary. We find evidence for a combination of short-term catastrophic events, large-scale tectonic processes and environmental perturbations, and major clade interactions that led to a seemingly dramatic faunal and ecological turnover in both the marine and terrestrial realms. This is coupled with a great reduction in global biodiversity which might in part be explained by poor sampling. Very few groups appear to have been entirely resilient to this J/K boundary 'event', which hints at a 'cascade model' of ecosystem changes driving faunal dynamics. Within terrestrial ecosystems, larger, more-specialised organisms, such as saurischian dinosaurs, appear to have suffered the most. Medium-sized tetanuran theropods declined, and were replaced by larger-bodied groups, and basal eusauropods were replaced by neosauropod faunas. The ascent of paravian theropods is emphasised by escalated competition with contemporary pterosaur groups, culminating in the explosive radiation of birds, although the timing of this is obfuscated by biases in sampling. Smaller, more ecologically diverse terrestrial non-archosaurs, such as lissamphibians and mammaliaforms, were comparatively resilient to extinctions, instead documenting the origination of many extant groups around the J/K boundary. In the marine realm, extinctions were focused on low-latitude, shallow marine shelf-dwelling faunas, corresponding to a significant eustatic sea-level fall in the latest Jurassic. More mobile and ecologically plastic marine groups, such as ichthyosaurs, survived the boundary relatively unscathed. High rates of extinction and turnover in other macropredaceous marine groups, including plesiosaurs, are accompanied by the origin of most major lineages of extant sharks. Groups which occupied both marine and terrestrial ecosystems, including crocodylomorphs, document a selective extinction in shallow marine forms, whereas turtles appear to have diversified. These patterns suggest that different extinction selectivity and ecological processes were operating between marine and terrestrial ecosystems, which were ultimately important in determining the fates of many key groups, as well as the origins of many major extant lineages. We identify a series of potential abiotic candidates for driving these patterns, including multiple bolide impacts, several episodes of flood basalt eruptions, dramatic climate change, and major disruptions to oceanic systems. The J/K t...

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“…Coralline algae. The largest living group of calcareous algae, coralline algae are common fossils in marine-shelf deposits ever since their appearance in the Early Cretaceous (Aguirre et al, 2000;Chatalov et al, 2015). They live mainly in marine waters from subpolar seas to the Equator, extending from the intertidal zone to about 100-120 m depth (Adey & Macintyre, 1973;Bosence, 1991;McCoy & Kamenos, 2015), although they have been exceptionally recorded at 270 m (Littler et al, 1985).…”

Section: Introductionmentioning

confidence: 99%

Architectural effects on fossil preservation. The case of macaroni coralline algae

Braga

Sola

2020

Spanish J. Palaeontol.

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Depositional characteristics and constraints on the mid-Valanginian demise of a carbonate platform in the intra-Tethyan domain, Circum-Rhodope Belt, northern Greece

Cited by 31 publications

References 212 publications

Upper Jurassic-Lower Cretaceous limestones from the Hăghimaș Massif (Eastern Carpathians, Romania): Microfacies, microfossils and depositional environments

Upper Jurassic-Lower Cretaceous limestones from the Hăghimaș Massif (Eastern Carpathians, Romania): Microfacies, microfossils and depositional environments

Biotic and environmental dynamics through the Late Jurassic–Early Cretaceous transition: evidence for protracted faunal and ecological turnover

Architectural effects on fossil preservation. The case of macaroni coralline algae

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