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
The Irish Ordovician brachiopod fauna: A taxonomic renaissance [PDF]
Estonian Journal of Earth Sciences, 2023 Despite its small areal extent, the island of Ireland exposes eight Caledonian tectonic terranes; six of them contain Ordovician brachiopod assemblages. These terranes record the early phases and destruction of the Iapetus Ocean through the occurrence of
David A. T. Harper
doaj +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
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
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
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 +2 more sources
Abrupt global-ocean anoxia during the Late Ordovician–early Silurian detected using uranium isotopes of marine carbonates [PDF]
Proceedings of the National Academy of Sciences of the United States of America, 2018 James R Wheeley +2 more
exaly +2 more sources
Global palaeogeographical implication of acritarchs in the Upper Ordovician [PDF]
Estonian Journal of Earth Sciences, 2023 The EarlyâMiddle Ordovician peri-Gondwana and Baltica acritarch provinces are easily recognizable, illustrating a clear provincialism of global phytoplankton.
Yan Kui +4 more
doaj +1 more source
High palaeolatitude (Hodh, Mauritania) recovery of graptolite faunas after the Hirnantian (end Ordovician) extinction event [PDF]
Marine shales directly overlying lower Hirnantian (uppermost Ordovician) glacially related sediments in Mauritania (North-West Africa) have produced a rich graptolite fauna spanning the Ordovician-Silurian boundary in an area of high palaeolatitude.
Underwood, Charlie J. +2 more
core +6 more sources