Carbonates before skeletons: A database approach
Carbonate minerals have precipitated from seawater for at least the last 3.8 billion years, but
changes in the physical and chemical properties of carbonate rocks demonstrate that the …
changes in the physical and chemical properties of carbonate rocks demonstrate that the …
Precise age of Bangiomorpha pubescens dates the origin of eukaryotic photosynthesis
Although the geological record indicates that eukaryotes evolved by 1.9–1.4 Ga, their early
evolution is poorly resolved taxonomically and chronologically. The fossil red alga …
evolution is poorly resolved taxonomically and chronologically. The fossil red alga …
A Mesoproterozoic carbonate platform (lower Belt Supergroup of western North America): Sediments, facies, tides, tsunamis and earthquakes in a tectonically active …
BR Pratt, RG Rule - Earth-Science Reviews, 2021 - Elsevier
Carbonate rocks of the lower Belt Supergroup (ca. 1.45 Ga) in west-central North America
include the Haig Brook, Tombstone Mountain, Waterton and Altyn formations which crop out …
include the Haig Brook, Tombstone Mountain, Waterton and Altyn formations which crop out …
Pyrite multiple-sulfur isotope evidence for rapid expansion and contraction of the early Paleoproterozoic seawater sulfate reservoir
Earthʼs oxygenation is often described in terms of two unidirectional steps at the beginning
and end of the Proterozoic Eon, separated by a long-lived intermediate redox state. Recent …
and end of the Proterozoic Eon, separated by a long-lived intermediate redox state. Recent …
Understanding the microscale spatial distribution and mineralogical residency of Re in pyrite: Examples from carbonate-hosted Zn-Pb ores and implications for pyrite …
Accurate and precise geochronology using the Re-Os isotopic system in pyrite is an
invaluable tool for developing and confirming genetic models of ore systems. However, as a …
invaluable tool for developing and confirming genetic models of ore systems. However, as a …
Covariance of microfossil assemblages and microbialite textures across an upper Mesoproterozoic carbonate platform
Early diagenetic chert nodules and beds in the upper Mesoproterozoic Angmaat (formerly
Society Cliffs) Formation, Baffin and Bylot islands, preserve microfossils and primary …
Society Cliffs) Formation, Baffin and Bylot islands, preserve microfossils and primary …
Thick sulfate evaporite accumulations marking a mid-Neoproterozoic oxygenation event (Ten Stone Formation, Northwest Territories, Canada)
Thick sulfate evaporite accumulations are absent from Proterozoic strata between ca. 2000
and ca. 1000 Ma, and detailed sedimentologic, stratigraphic, and geochemical data for the …
and ca. 1000 Ma, and detailed sedimentologic, stratigraphic, and geochemical data for the …
Constraints on Meso-to Neoproterozoic seawater from ancient evaporite deposits
Abstract Marine sulfate (SO 4 2−) is intimately connected to the global carbon and oxygen
cycles through its important role as an electron acceptor for the microbial respiration of …
cycles through its important role as an electron acceptor for the microbial respiration of …
The role of clay minerals in the preservation of Precambrian organic‐walled microfossils
Precambrian organic‐walled microfossils (OWMs) are primarily preserved in mudstones and
shales that are low in total organic carbon (TOC). Recent work suggests that high TOC may …
shales that are low in total organic carbon (TOC). Recent work suggests that high TOC may …
A high-TOC shale in a low productivity world: The late Mesoproterozoic Arctic Bay Formation, Nunavut
Abstract The latest Mesoproterozoic Arctic Bay Formation (Borden Basin, Nunavut, Canada)
is up to∼ 1130 m-thick and contains a significant proportion of unusually organic-rich black …
is up to∼ 1130 m-thick and contains a significant proportion of unusually organic-rich black …