Coupled vanadium and thallium isotope constraints on Mesoproterozoic ocean oxygenation around 1.38-1.39 Ga

AW Heard, Y Wang, CM Ostrander, M Auro… - Earth and Planetary …, 2023 - Elsevier
The oxygenation state of the Mid-Proterozoic (1.8–0.8 Ga) ocean and atmosphere is heavily
debated and has implications for the relationship between environmental O 2 and the …

Widespread seafloor anoxia during generation of the Ediacaran Shuram carbon isotope excursion

CM Ostrander, CJ Bjerrum, ASC Ahm, SR Stenger… - …, 2023 - Wiley Online Library
Reconstructing the oxygenation history of Earth's oceans during the Ediacaran period (635
to 539 million years ago) has been challenging, and this has led to a polarizing debate …

Zinc isotope evidence for enhanced organic carbon burial driving transient oxygenation of the Mesoproterozoic ocean

K Song, D Li, YW Lv, C Yuan, YR Qu, SA Liu - Precambrian Research, 2024 - Elsevier
The Mesoproterozoic era has long been thought to have low atmospheric oxygen and
predominant oceanic anoxia, but recent studies argue that the oxygen levels in …

Mulling and nulling the coeval rise of Ediacaran oxygen and animals

CM Ostrander - Earth and Planetary Science Letters, 2023 - Elsevier
The initial appearance of animals in the fossil record during the Ediacaran period (635 to
539 Ma ago) has been classically linked to a dramatic increase in marine oxygen levels …

[HTML][HTML] The potential for reconstructing primary ocean chemistry from hypogene and supergene altered banded iron formations: An example from Weld Range …

SC Russo, AJ McCoy-West, P Duuring - Precambrian Research, 2024 - Elsevier
Pristine banded iron formations (BIF) are established paleo-environmental proxies for
reconstructing the elemental and isotopic signatures of the ancient seawater that they …

Cu and Zn isotopic evidence for the magnitude of organic burial in the Mesoproterozoic Ocean

Y Lü, SA Liu - Journal of Earth Science, 2022 - Springer
The rate of net primary production in the Proterozoic ocean was suggested to be no more
than 10% of its modern value (Laakso and Schrag, 2019), however, in the Mesoproterozoic …

Thallium isotopes as indicators of ore mineralization at the Zn-rich sediment-hosted massive sulfide TL Deposit, British Columbia, Canada

DR Knaack, KV Sullivan… - Geochemistry …, 2023 - pubs.geoscienceworld.org
Few studies have focused on the application of the Tl isotopic system for geochemical
exploration. We report ε 205Tl values of rock samples from the TL Deposit, British Columbia …

Comparing thallium isotopes to paleosalinity and Mo-U isotope paleoredox proxies: A case study of the Upper Devonian Kettle Point Formation, Ontario

NC Bell - 2023 - uwspace.uwaterloo.ca
Black shale formations are utilised to reconstruct ancient global ocean redox conditions by
analyzing and inferring their geochemical and isotopic compositions. However, the accuracy …