Eukaryogenesis and oxygen in Earth history
The endosymbiotic origin of mitochondria during eukaryogenesis has long been viewed as
an adaptive response to the oxygenation of Earth's surface environment, presuming a …
an adaptive response to the oxygenation of Earth's surface environment, presuming a …
Global marine redox evolution from the late Neoproterozoic to the early Paleozoic constrained by the integration of Mo and U isotope records
The emergence and diversification of early animals is commonly thought to have coincided
with atmosphere and ocean oxygenation across the terminal Neoproterozoic and early …
with atmosphere and ocean oxygenation across the terminal Neoproterozoic and early …
Extreme variability in atmospheric oxygen levels in the late Precambrian
Map** the history of atmospheric O2 during the late Precambrian is vital for evaluating
potential links to animal evolution. Ancient O2 levels are often inferred from geochemical …
potential links to animal evolution. Ancient O2 levels are often inferred from geochemical …
Basin-scale reconstruction of euxinia and Late Devonian mass extinctions
Abstract The Devonian–Carboniferous transition marks a fundamental shift in the surface
environment primarily related to changes in ocean–atmosphere oxidation states,, resulting …
environment primarily related to changes in ocean–atmosphere oxidation states,, resulting …
Uranium isotopes in marine carbonates as a global ocean paleoredox proxy: a critical review
The protracted oxygenation of the ocean-atmosphere system is one of the most fundamental
changes to the Earth system through its history. The uranium isotopic composition (238 …
changes to the Earth system through its history. The uranium isotopic composition (238 …
A diverse Ediacara assemblage survived under low-oxygen conditions
The Ediacaran biota were soft-bodied organisms, many with enigmatic phylogenetic
placement and ecology, living in marine environments between 574 and 539 million years …
placement and ecology, living in marine environments between 574 and 539 million years …
[HTML][HTML] Sedimentary Ce anomalies: Secular change and implications for paleoenvironmental evolution
Although Ce anomalies are commonly used to reconstruct past seawater redox conditions,
published interpretations are based on various proxy materials and analytical approaches …
published interpretations are based on various proxy materials and analytical approaches …
The biogeochemistry of ferruginous lakes and past ferruginous oceans
Anoxic and iron-rich (ferruginous) conditions prevailed in the ocean under the low-oxygen
atmosphere that occurred through most of the Archean Eon. While euxinic conditions (ie …
atmosphere that occurred through most of the Archean Eon. While euxinic conditions (ie …
Carbonate uranium isotopes record global expansion of marine anoxia during the Toarcian Oceanic Anoxic Event
The Toarcian Oceanic Anoxic Event (T-OAE;~ 183 Mya) was a globally significant carbon-
cycle perturbation linked to widespread deposition of organic-rich sediments, massive …
cycle perturbation linked to widespread deposition of organic-rich sediments, massive …
Persistent global marine euxinia in the early Silurian
The second pulse of the Late Ordovician mass extinction occurred around the Hirnantian-
Rhuddanian boundary (~ 444 Ma) and has been correlated with expanded marine anoxia …
Rhuddanian boundary (~ 444 Ma) and has been correlated with expanded marine anoxia …