Geophysical Monograph Series, Page 1-26., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst +8 more
wiley +12 more sources
Enigmatic Mid‐Proterozoic Orogens: Hot, Thin, and Low
Geophysical Research Letters, 2021 Since the Archean, secular change in orogenic style is demonstrated through evolution of metamorphic conditions and geochemical proxies. Linked to orogenic style is the amount of crustal thickening and elevation, whereas orogenic vigor is related to the ...
Christopher J. Spencer +2 more
doaj +2 more sources
Morphometric convergence between Proterozoic and post-vegetation rivers
Nature Communications, 2017 It has been previously assumed that deep river channels could not have developed in the Proterozoic due to lack of vegetation. Here, the authors present remote sensing and outcrop data to show that large scale and deeply channelled river networks did ...
Alessandro Ielpi +3 more
doaj +2 more sources
Molar tooth carbonates and benthic methane fluxes in Proterozoic oceans
Nature Communications, 2016 Molar tooth structures are common in early- to mid-Proterozoic carbonates but extremely rare in rocks younger than 750 Ma. Here, the authors show molar tooth carbonate formation is related to benthic methane fluxes.
Bing Shen +8 more
doaj +2 more sources
Carbon isotope evidence for the global physiology of Proterozoic cyanobacteria
Science Advances, 2021 Carboxysomes evolved due to rising O2, not falling CO2, enabling planktic cyanobacteria to flourish during earth’s middle age. Ancestral cyanobacteria are assumed to be prominent primary producers after the Great Oxidation Event [≈2.4 to 2.0 billion ...
Sarah J. Hurley +4 more
semanticscholar +1 more source
Preserved intercratonic lithosphere reveals Proterozoic assembly of Australia
Geology, 2022 The Proterozoic assembly of Australia, the understanding of which is critical for reconstructing Proterozoic supercontinents, involved amalgamation of the West Australian (WAC), North Australian (NAC), and South Australian cratons (SAC).
Yongjun Lu +10 more
semanticscholar +1 more source
Nature Communications, 2021 Biological N2 fixation was key to the expansion of life on early Earth. The N2-fixing microorganisms and the nitrogenase type used in the Proterozoic are unknown, although it has been proposed that the canonical molybdenum-nitrogenase was not used due to
M. Philippi +11 more
semanticscholar +1 more source
Geophysical Monograph Series, Page 137-165., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Konstantin Litasov +3 more
wiley +2 more sources
Geology, 2020 Silicification was a major mode of fossilization in Proterozoic peritidal environments, but marine silica concentrations and the chemical and biological mechanisms that drove microbial silicification and formation of early diagenetic chert in these ...
K. Moore +6 more
semanticscholar +1 more source
Earth's anomalous middle-age magmatism driven by plate slowdown
Scientific Reports, 2022 The mid-Proterozoic or "boring billion" exhibited extremely stable environmental conditions, with little change in atmospheric oxygen levels, and mildly oxygenated shallow oceans.
C. O’Neill +3 more
doaj +1 more source