Different controls on the Hg spikes linked the two pulses of the Late Ordovician mass extinction in South China [PDF]
Scientific Reports, 2022 The Late Ordovician mass extinction (LOME, ca. 445 Ma; Hirnantian stage) is the second most severe biological crisis of the entire Phanerozoic. The LOME has been subdivided into two pulses (intervals), at the beginning and the ending of the Hirnantian ...
Zhen Qiu +5 more
doaj +2 more sources
Petroleum Exploration and Development, 2021 Based on the lithologies, sedimentary structures, graptolite zones, inorganic geochemical characteristics, electrical data of 110 shale gas wells in southern Sichuan Basin and the mineral quantitative analysis technology of scanning electron microscope ...
Yiqing Zhu, Chao Luo, Yuran Yang
exaly +3 more sources
AGU Advances, 2022 The Ordovician (Hirnantian; 445 Ma) hosts the second most severe mass extinction in Earth history, coinciding with Gondwanan glaciation and increased geochemical evidence for marine anoxia.
Nevin P. Kozik +4 more
doaj +2 more sources
A Cenozoic-style scenario for the end-Ordovician glaciation [PDF]
Nat Commun, 2014 The end-Ordovician was an enigmatic interval in the Phanerozoic, known for massive glaciation potentially at elevated CO2 levels, biogeochemical cycle disruptions recorded as large isotope anomalies and a devastating extinction event.
Achab, A +10 more
core +9 more sources
Climate change and the selective signature of the Late Ordovician mass extinction [PDF]
Proc Natl Acad Sci U S A, 2012 Selectivity patterns provide insights into the causes of ancient extinction events. The Late Ordovician mass extinction was related to Gondwanan glaciation; however, it is still unclear whether elevated extinction rates were attributable to record ...
Finnegan, Seth +3 more
core +4 more sources
Upper Ordovician chronostratigraphic correlation between the Appalachian and Midcontinent basins [PDF]
Estonian Journal of Earth Sciences, 2023 Study of a subsurface core (named F688) from northern Indiana provides integrated data sets linking Katian chronostratigraphic records of the Appalachian and Midcontinent basins.
Cristiana J. P. Esteves +7 more
doaj +1 more source
Changes in the morphology of Late Ordovician ostracods along the shelf-to-basin transect of the Baltic Palaeobasin [PDF]
Estonian Journal of Earth Sciences, 2022 The present work analyses the numerical distribution data of ostracods in the Late Ordovician (Katian) deposits of Estonia for establishing trends in carapace morphology along a facies profile from a shallow shelf to a deep basin.
Stefi Guitor, Tõnu Meidla
doaj +1 more source
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 +1 more source
Late Ordovician beachrock as a far-field indicator for glacial meltwater pulse [PDF]
Estonian Journal of Earth Sciences, 2023 Understanding ancient climate changes is hampered by the inability to disentangle trends in continental ice volume from records of relative sea-level change. As a unique coastal deposit in tropical and subtropical regions, beachrock has been proved to be
Qijian Li +5 more
doaj +1 more source
Geophysical Monograph Series, Page 169-190., 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.
Nasrrddine Youbi +9 more
wiley +2 more sources