End-Triassic calcification crisis and blooms of organic-walled 'disaster species' [PDF]
, 2007 The Triassic–Jurassic (T–J) mass-extinction event is marked by isotope anomalies in organic (δ13Corg) and carbonate carbon (δ13Ccarb) reservoirs. These have been attributed to a (rapid) 4-fold rise in pCO2 as a result of massive flood basalt volcanism ...
Bailey, T. R. +8 more
core +2 more sources
The effect of precipitation rate on Mg/Ca and Sr/Ca ratios in biogenic calcite as observed in a belemnite rostrum [PDF]
, 2017 This is the author's manuscript - under review for journal Biogeosciences and available online from the publisher via the DOI in this record.Isotopic ratios and concentrations of the alkaline earth metals Mg and Sr in biogenic calcite are of great ...
Ullmann, CV
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The effect of shell secretion rate on Mg / Ca and Sr / Ca ratios in biogenic calcite as observed in a belemnite rostrum [PDF]
, 2017 ArticleThis is the final version of the article. Available from European Geosciences Union via the DOI in this record.Isotopic ratios and concentrations of the alkaline earth metals Mg and Sr in biogenic calcite are of great importance as proxies for ...
Pogge von Strandmann, PAE, Ullmann, CV
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Rivista Italiana di Paleontologia e Stratigrafia, 2019 Brachiopods are a key group in Phanerozoic marine diversity analyses for their excellent fossil record and distinctive evolutionary history. A genus-level survey of raw diversity trajectories allows the identification of the Brachiopod Big Five, episodes
ATTILA VÖRÖS +2 more
doaj +1 more source
Sr-Isotope Stratigraphy: Assigning Time in the Campanian, Pliensbachian, Toarcian, and Valanginian [PDF]
, 2016 The trend of marine 87Sr/86Sr against stratigraphic level through sections, whether linear or not, can identify hiatuses and changing rates of sedimentation through those sections and so be a valuable constraint on attempts to assign numerical ages to ...
Landman, NH +3 more
core +2 more sources
Palaeoenvironmental significance of Toarcian black shales and event deposits from southern Beaujolais, France [PDF]
, 2017 New sedimentological, biostratigraphical and geochemical data recording the Toarcian Oceanic Anoxic Event (T-OAE) are reported from a marginal marine succession in southern Beaujolais, France.
FÖLLMI, KARL B. +10 more
core
A calcareous nannofossil and organic geochemical study of marine palaeoenvironmental changes across the Sinemurian/Pliensbachian (early Jurassic, ~191Ma) in Portugal [PDF]
, 2016 The Sinemurian/Pliensbachian boundary (~ 191 Ma) is acknowledged as one of the most important steps in the radiation of planktonic organisms, especially primary producers such as dinoflagellates and coccolithophores.
Baudin, F. +6 more
core +4 more sources
Analysis of global diversity patterns and dynamics of selected Mesozoic marine invertebrate groups [PDF]
, 2015 Megjegyzés az értekezés megjelenítéséről: a szerző kérésére a disszertáció 2017-08-31-től lehet nyilvános; a tézisek ...
Kocsis, Tibor Ádám
core +1 more source
Tectonic forcing of Early to Middle Jurassic seawater Sr/Ca [PDF]
, 2015 types: ArticleThis is the author formatted version of Ullman et al. (2013) Geology 41(12), 1211-1214. doi:10.1130/G34817.1 http://geology.gsapubs.org/content/41/12/1211.full Uploaded under the terms of Green Open Access in GSA's Open Access PolicyThe ...
Hesselbo, Stephen P. +2 more
core +1 more source
Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.Abstract The Toarcian Oceanic Anoxic Event (T‐OAE, ∼183 Ma) was characterized by globally enhanced organic‐carbon burial and a negative carbon‐isotope excursion (N‐CIE). However, the role of marine productivity at this time, and its spatiotemporal variability, is unclear.
Wenhan Chen +11 more
wiley +1 more source