Climate cyclicity-controlled recurrent bottom-water ventilation events in the aftermath of the Toarcian Oceanic Anoxic Event: the Jenkyns Event
Sign Up to like & getrecommendations! Published in 2024 at "International Journal of Earth Sciences"
DOI: 10.1007/s00531-024-02417-7
Abstract: Environmental perturbations of the Toarcian Anoxic Event and its associated carbon isotope excursion (CIE) occurred in a cyclic fashion indicating an orbital control mechanism. Sedimentary strata of the E. elegantulum ammonite subzone in the Lorraine… read more here.
Keywords: water; sub; event; anoxic event ... See more keywords
Depositional paleoenvironment and source rock characterization across the Toarcian Oceanic Anoxic Event from the eastern Tethys, Tibet, SW China
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Coal Geology"
DOI: 10.1016/j.coal.2021.103780
Abstract: Abstract An integrated approach based on organic petrographic and geochemical proxies along with palynological and palynofacies analysis were employed using 24 rock samples representing the upper part of the Quse and Sewa formations in the… read more here.
Keywords: toarcian oceanic; oceanic anoxic; rock characterization; anoxic event ... See more keywords
Zinc- and cadmium-isotope evidence for redox-driven perturbations to global micronutrient cycles during Oceanic Anoxic Event 2 (Late Cretaceous)
Sign Up to like & getrecommendations! Published in 2020 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2020.116427
Abstract: Abstract This study uses organic-rich sediments from the Tarfaya Basin, Morocco, to assess the Cd- and Zn-isotope response to dramatic global palaeoenvironmental change during the Cenomanian–Turonian interval (Late Cretaceous). These organic-rich continental-margin deposits include an… read more here.
Keywords: anoxic event; organic rich; isotope; late cretaceous ... See more keywords
Paleoenvironmental changes during the late Albian oceanic anoxic event 1d: An example from the Capacho Formation, southwestern Venezuela
Sign Up to like & getrecommendations! Published in 2019 at "Palaeogeography, Palaeoclimatology, Palaeoecology"
DOI: 10.1016/j.palaeo.2019.02.010
Abstract: Abstract The late Albian–early Cenomanian oceanic anoxic event 1d (OAE-1d; ~103 to 99.5 Ma) represents a global interval of enhanced organic carbon burial due to widespread oxygen deficiency in the water column and/or increased primary productivity.… read more here.
Keywords: late albian; southwestern venezuela; formation southwestern; oceanic anoxic ... See more keywords
Biotic and Paleoceanographic Changes Across the Late Cretaceous Oceanic Anoxic Event 2 in the Southern High Latitudes (IODP Sites U1513 and U1516, SE Indian Ocean)
Sign Up to like & getrecommendations! Published in 2022 at "Paleoceanography and Paleoclimatology"
DOI: 10.1029/2022pa004474
Abstract: Oceanic Anoxic Event 2, spanning the Cenomanian/Turonian boundary (93.9 Ma), was an episode of major perturbations in the global carbon cycle. To investigate the response of biota and the paleoceanographic conditions across this event, we… read more here.
Keywords: event; southern high; anoxic event; oceanic anoxic ... See more keywords
Vegetation response to exceptional global warmth during Oceanic Anoxic Event 2
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DOI: 10.1038/s41467-018-06319-6
Abstract: The Cenomanian–Turonian Oceanic Anoxic Event (OAE2; ~94.5 million years ago) represents an episode of global-scale marine anoxia and biotic turnover, which corresponds to one of the warmest time intervals in the Phanerozoic. Despite its global… read more here.
Keywords: anoxic event; vegetation response; vegetation; oceanic anoxic ... See more keywords
Marine organic carbon burial increased forest fire frequency during Oceanic Anoxic Event 2
Sign Up to like & getrecommendations! Published in 2020 at "Nature Geoscience"
DOI: 10.1038/s41561-020-0633-y
Abstract: Volcanic-driven nutrient flux to the oceans stimulated marine productivity and organic matter burial during Oceanic Anoxic Event 2 (OAE2; ~94 million years ago). While the preferential burial of 13C-depleted organic matter led to a general… read more here.
Keywords: anoxic event; carbon; oceanic anoxic; event ... See more keywords
Rapid light carbon releases and increased aridity linked to Karoo–Ferrar magmatism during the early Toarcian oceanic anoxic event
Sign Up to like & getrecommendations! Published in 2022 at "Scientific Reports"
DOI: 10.1038/s41598-022-08269-y
Abstract: Large-scale release of isotopically light carbon is responsible for the carbon isotope excursion (CIE) of the Toarcian Oceanic Anoxic Event during the Lower Jurassic. Proposed sources include methane hydrate dissociation, volcanogenic outgassing of carbon dioxide… read more here.
Keywords: anoxic event; karoo ferrar; carbon; light carbon ... See more keywords
Cerium anomalies and iodine track nonuniform paleoredox conditions during the Aptian Oceanic Anoxic Event 1a
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DOI: 10.1038/s41598-025-09471-4
Abstract: The Early Aptian Oceanic Anoxic Event 1a (OAE 1a) marks a period of global marine anoxia linked to volcanic activity and climate changes during the Cretaceous. This study analyzes a ~ 40-m-thick Lower Aptian succession from the… read more here.
Keywords: cerium anomalies; anoxic event; anoxic; oceanic anoxic ... See more keywords
Carbonate uranium isotopes record global expansion of marine anoxia during the Toarcian Oceanic Anoxic Event
Sign Up to like & getrecommendations! Published in 2024 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.2406032121
Abstract: Significance A significant negative δ238U excursion (~0.4‰) starting just prior to the onset of the negative carbon isotope excursion within the Toarcian Oceanic Anoxic Event (T-OAE) has been recorded, followed by a long-lived recovery of… read more here.
Keywords: toarcian oceanic; global expansion; anoxic event; anoxic ... See more keywords
Pulsed biogenic methane emissions coupled with episodic warming during the Toarcian Oceanic Anoxic Event.
Sign Up to like & getrecommendations! Published in 2025 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.2423598122
Abstract: Reconstructing carbon release fluxes during ancient climatic warming events is important for improving predictions of carbon cycle and climate dynamics under future anthropogenic warming scenarios. We investigate the extent of biogenic methane release and its… read more here.
Keywords: carbon; toarcian oceanic; biogenic methane; methane ... See more keywords