The Late Ordovician extinction conundrum [PDF]
Estonian Journal of Earth Sciences, 2023 The Late Ordovician mass extinction (LOME) has long been known for its association with the Hirnantian glaciations. Two extinction pulses seem to reflect global cooling and warming, respectively. The effects climate change had on Ordovician life are well
Christian M. Ø. Rasmussen
doaj +3 more sources
Late Ordovician cephalopods from Morocco and their implications
Swiss Journal of PalaeontologyThe present paper describes the latest cephalopod fauna from the Upper Ordovician in the Anti-Atlas region, Morocco. Two species are reported herein belonging to two genera including one new species, Tafadnatoceras elfechtense sp. nov.
Xiang Fang +12 more
doaj +5 more sources
Large mass-independent sulphur isotope anomalies link stratospheric volcanism to the Late Ordovician mass extinction [PDF]
Nature Communications, 2020 Identification of stratospheric volcanic eruptions in the geological record and their link to mass extinction events during the past 540 million years remains challenging.
Dongping Hu +5 more
doaj +2 more sources
Late Ordovician Palynomorphs [PDF]
Journal of Micropalaeontology, 1985 Abstract. ACRITARCHSOrdovician acritarchs have been recorded in five core samples collected between 2520 ft. and 3000 ft. in Well E1-81, and ten cutting samples taken between 12150 ft. and 13240 ft. in Well J1-81A. All the assemblages recovered are of Late Ordovician age; no Early Ordovician or Middle Ordovician assemblages have been identified ...
Molyneux, S. G., Paris, F.
openaire +3 more sources
New Late Ordovician cornulitids from Peru [PDF]
Bulletin of Geosciences, 2016 Peer ...
Vinn, Olev, Gutiérrez-Marco, J. C.
openaire +3 more sources
Phylogenetic Clustering of Origination and Extinction across the Late Ordovician Mass Extinction. [PDF]
PLoS ONE, 2015 Mass extinctions can have dramatic effects on the trajectory of life, but in some cases the effects can be relatively small even when extinction rates are high.
Andrew Z Krug, Mark E Patzkowsky
doaj +2 more sources
Sedimentary Mercury Enrichments as a Tracer of Large Igneous Province Volcanism
Geophysical Monograph Series, Page 247-262., 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.
Lawrence M. E. Percival +3 more
wiley +10 more sources
Volcanism and basalt weathering drove Ordovician climatic cooling [PDF]
Nature CommunicationsCausal connections among major Ordovician environmental and biological events (i.e., long-term climatic cooling, Hirnantian Glaciation, Great Ordovician Biodiversification Event, and Late Ordovician Mass Extinction) remain in debate, and the hypothesis ...
He Zhao +5 more
doaj +2 more sources
High potential for weathering and climate effects of non-vascular vegetation in the Late Ordovician [PDF]
Nature Communications, 2016 Early non-vascular vegetation may have caused an interval of glaciations in the Late Ordovician by enhancing global chemical weathering. Here, by simulating the organisms with a spatially explicit, process-based model, the authors propose that Ordovician
P. Porada +8 more
doaj +2 more sources
The Magnitude and Duration of Late Ordovician–Early Silurian Glaciation [PDF]
Science, 2011 Carbonate isotopes reveal a link between past ocean temperatures and mass extinction.
Finnegan, Seth +8 more
openaire +4 more sources