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
Sign Up to like & getrecommendations! Published in 2018 at "Nature Communications"
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
Patterns of local and global redox variability during the Cenomanian–Turonian Boundary Event (Oceanic Anoxic Event 2) recorded in carbonates and shales from central Italy
Sign Up to like & getrecommendations! Published in 2017 at "Sedimentology"
DOI: 10.1111/sed.12352
Abstract: Careful evaluation of the local geochemical conditions in past marine settings can provide a window to the average redox state of the global ocean during episodes of extensive organic-carbon deposition. These comparisons aid in identifying… read more here.
Keywords: anoxic event; cenomanian turonian; redox; oceanic anoxic ... See more keywords
Pulsed volcanism and rapid oceanic deoxygenation during Oceanic Anoxic Event 1a
Sign Up to like & getrecommendations! Published in 2021 at "Geology"
DOI: 10.1130/g49065.1
Abstract: Widespread oceanic anoxia, biological crises, and volcanic activity are associated with the onset of Early Aptian (ca. 120 Ma) Oceanic Anoxic Event 1a (OAE1a). Reconstructions of oceanic deoxygenation and its links to broadly contemporaneous volcanism,… read more here.
Keywords: oceanic anoxic; anoxic event; oceanic deoxygenation; volcanism ... See more keywords
Collapse of terrestrial ecosystems linked to heavy metal poisoning during the Toarcian oceanic anoxic event
Sign Up to like & getrecommendations! Published in 2023 at "Geology"
DOI: 10.1130/g51037.1
Abstract: The Early Jurassic Toarcian oceanic anoxic event (T-OAE, ca. 183 Ma) was accompanied by a major biotic turnover in the oceans and substantial vegetation change on land. The marine biotic crisis has been attributed to… read more here.
Keywords: collapse; collapse terrestrial; heavy metal; anoxic event ... See more keywords