Geochemistry of oceanic anoxic events

HC Jenkyns - Geochemistry, Geophysics, Geosystems, 2010 - Wiley Online Library
Oceanic anoxic events (OAEs) record profound changes in the climatic and
paleoceanographic state of the planet and represent major disturbances in the global …

History of Seawater Carbonate Chemistry, Atmospheric CO2, and Ocean Acidification

RE Zeebe - Annual review of earth and planetary sciences, 2012 - annualreviews.org
Humans are continuing to add vast amounts of carbon dioxide (CO2) to the atmosphere
through fossil fuel burning and other activities. A large fraction of the CO2 is taken up by the …

The cretaceous period

AS Gale, J Mutterlose, S Batenburg, FM Gradstein… - Geologic time scale …, 2020 - Elsevier
The breakup of the former Pangea supercontinent culminated in the modern drifting
continents. Increased rifting caused the establishment of the Atlantic Ocean in the middle …

Ontong Java Plateau eruption as a trigger for the early Aptian oceanic anoxic event

MLG Tejada, K Suzuki, J Kuroda, R Coccioni… - …, 2009 - pubs.geoscienceworld.org
Abstract The Early Cretaceous Ontong Java Plateau was emplaced at almost the same time
as marine biotic changes that culminated in oceanic anoxic event 1 (OAE1a). A causative …

Pre-Cenozoic cyclostratigraphy and palaeoclimate responses to astronomical forcing

D De Vleeschouwer, LME Percival… - Nature Reviews Earth & …, 2024 - nature.com
Astronomical insolation forcing is well established as the underlying metronome of
Quaternary ice ages and Cenozoic climate changes. Yet its effects on earlier eras …

Astronomical tuning of the Aptian stage and its implications for age recalibrations and paleoclimatic events

CG Leandro, JF Savian, MVL Kochhann… - Nature …, 2022 - nature.com
The Aptian was characterized by dramatic tectonic, oceanographic, climatic and biotic
changes and its record is punctuated by Oceanic Anoxic Events (OAEs). The timing and …

Environmental consequences of Ontong Java Plateau and Kerguelen plateau volcanism

E Erba, RA Duncan, C Bottini, D Tiraboschi… - Geol. Soc. Am …, 2015 - books.google.com
The mid-Cretaceous was marked by emplacement of large igneous provinces (LIPs) that
formed gigantic oceanic plateaus, affecting ecosystems on a global scale, with biota forced …

A volcanic CO2 pulse triggered the Cretaceous Oceanic Anoxic Event 1a and a biocalcification crisis

S Méhay, CE Keller, SM Bernasconi… - …, 2009 - pubs.geoscienceworld.org
Abstract The Aptian Oceanic Anoxic Event 1a (OAE1a, ca. 120 Ma ago) is one of the most
prominent of a series of geologically brief intervals in the Cretaceous characterized by the …

Significant increases in global weathering during Oceanic Anoxic Events 1a and 2 indicated by calcium isotopes

CL Blättler, HC Jenkyns, LM Reynard… - Earth and Planetary …, 2011 - Elsevier
Calcium-isotope ratios (δ44/42Ca) were measured in carbonate-rich sedimentary sections
deposited during Oceanic Anoxic Events 1a (Early Aptian) and 2 (Cenomanian–Turonian) …

Radiometric constraints on the timing, tempo, and effects of large igneous province emplacement

J Kasbohm, B Schoene… - Large Igneous Provinces: A …, 2021 - Wiley Online Library
There is an apparent temporal correlation between large igneous province (LIP)
emplacement and global environmental crises, including mass extinctions. Advances in the …