Claypool continued: Extending the isotopic record of sedimentary sulfate

PW Crockford, M Kunzmann, A Bekker, J Hayles… - Chemical …, 2019 - Elsevier
Abstract The Proterozoic Eon spans Earth's middle age during which many important
transitions occurred. These transitions include the oxygenation of the atmosphere …

Deconstructing the Lomagundi-Jatuli carbon isotope excursion

MSW Hodgskiss, PW Crockford… - Annual Review of Earth …, 2023 - annualreviews.org
The early to mid-Paleoproterozoic Lomagundi-Jatuli Excursion (LJE) is ostensibly the
largest magnitude (approximately+ 5 to+ 30‰), longest duration (ca. 130–250 million years) …

Large igneous province record through time and implications for secular environmental changes and geological time‐scale boundaries

RE Ernst, DPG Bond, SH Zhang… - … igneous provinces: A …, 2021 - Wiley Online Library
An emerging consensus suggests that large igneous provinces (LIPs) are a significant driver
of dramatic global environmental and biological changes, including several Phanerozoic …

A one-billion-year-old multicellular chlorophyte

Q Tang, K Pang, X Yuan, S Xiao - Nature Ecology & Evolution, 2020 - nature.com
Chlorophytes (representing a clade within the Viridiplantae and a sister group of the
Streptophyta) probably dominated marine export bioproductivity and played a key role in …

Snowballs in Africa: sectioning a long-lived Neoproterozoic carbonate platform and its bathyal foreslope (NW Namibia)

PF Hoffman, GP Halverson, DP Schrag, JA Higgins… - Earth-Science …, 2021 - Elsevier
Abstract Otavi Group is a 1.5–3.5-km-thick epicontinental marine carbonate succession of
Neoproterozoic age, exposed in an 800-km-long Ediacaran− Cambrian fold belt that rims …

[PDF][PDF] Carbon isotopes in clastic rocks and the Neoproterozoic carbon cycle

DE Canfield, AH Knoll, SW Poulton… - American Journal of …, 2020 - ajsonline.org
It has been proposed that isotopically light inorganic carbon precipitated diagenetically in
clastic sediments can explain the large carbon isotopic excursions recorded in …

A template for an improved rock-based subdivision of the pre-Cryogenian timescale

GA Shields, RA Strachan, SM Porter… - Journal of the …, 2022 - lyellcollection.org
The geological timescale before 720 Ma uses rounded absolute ages rather than specific
events recorded in rocks to subdivide time. This has led increasingly to mismatches between …

Four-dimensional context of Earth's supercontinents

DAD Evans, ZX Li, JB Murphy - Geological Society, London …, 2016 - lyellcollection.org
The supercontinent-cycle hypothesis attributes planetary-scale episodic tectonic events to
an intrinsic self-organizing mode of mantle convection, governed by the buoyancy of …

Seawater-buffered diagenesis, destruction of carbon isotope excursions, and the composition of DIC in Neoproterozoic oceans

PF Hoffman, KG Lamothe - Proceedings of the National …, 2019 - National Acad Sciences
Carbonate sediments of nonglacial Cryogenian (659 to 649 Ma) and early Ediacaran (635 to
590 Ma) age exhibit large positive and negative δ13Ccarb excursions in a shallow-water …

Sedimentological perspectives on climatic, atmospheric and environmental change in the Neoproterozoic Era

GH Spence, DP Le Heron, IJ Fairchild - Sedimentology, 2016 - Wiley Online Library
Sedimentological insights underpin many of the important recent advances in understanding
of Earth system behaviour in the Neoproterozoic Era. This article reviews three main …