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Showing 1–7 of 7 results

Advanced filters: Author: Chadlin M. Ostrander Clear advanced filters

Onset of persistent surface ocean oxygenation during the Great Oxidation Event

Compared to the oxygenation of Earth’s atmosphere, little is known about the build up of dissolved oxygen in the oceans. Vanadium isotopes in shales suggest shallow oceans equilibrated with a newly oxygenated atmosphere in just a few million years.

Andy W. Heard
Chadlin M. Ostrander
Sune G. Nielsen
ResearchOpen Access09 Dec 2025
Nature Communications

Volume: 16, P: 1-10
The rise of free oxygen may have initiated on marine mud

The oxygenation of Earth’s atmosphere ~2.45–2.30 billion years ago may have initiated in the oxidized bottom waters of marine shelves, according to a synthesis of thallium and nitrogen isotopes and cyanobacteria phylogenetic records.

Joanne S. Boden
Chadlin M. Ostrander
Eva E. Stüeken
Reviews04 Dec 2025
Nature Geoscience

Volume: 18, P: 1202-1208
Author Correction: Fully oxygenated water columns over continental shelves before the Great Oxidation Event

Chadlin M. Ostrander
Sune G. Nielsen
Ariel D. Anbar
Amendments and Corrections06 Mar 2019
Nature Geoscience

Volume: 12, P: 307
Onset of coupled atmosphere–ocean oxygenation 2.3 billion years ago

The Great Oxidation Event represents a tipping point in Earth’s O₂ mass balance—when more O₂ was being produced than destroyed—that forever changed the habitability of worldwide oceans.

Chadlin M. Ostrander
Andy W. Heard
Sune G. Nielsen
Research12 Jun 2024
Nature

Volume: 631, P: 335-339
Transient marine bottom water oxygenation on continental shelves by 2.65 billion years ago

Oxygenated bottom water existed transiently on continental shelves with O₂ penetrating into underlying marine sediments by about 2.65 billion years ago, according to a study of thallium isotopes in Archaean shales.

Xinming Chen
Chadlin M. Ostrander
Jeremy D. Owens
Research16 Apr 2025
Nature Geoscience

Volume: 18, P: 423-429
Fully oxygenated water columns over continental shelves before the Great Oxidation Event

Before the Great Oxidation Event there was regional-scale, full water-column oxygenation above the continental shelf, according to molybdenum and thallium isotope records that indicate massive manganese oxide burial.

Chadlin M. Ostrander
Sune G. Nielsen
Ariel D. Anbar
Research25 Feb 2019
Nature Geoscience

Volume: 12, P: 186-191
Recurrent photic zone euxinia limited ocean oxygenation and animal evolution during the Ediacaran

Using Hg isotopes, the authors find that repeated invasion of toxic, H₂S-rich water into the marine photic zone of the Ediacaran ocean may have inhibited the rise of oxygen and delayed the expansion of early animals.

Wang Zheng
Anwen Zhou
Jiubin Chen
ResearchOpen Access03 Jul 2023
Nature Communications

Volume: 14, P: 1-12