Ordovician News - International Commission on Stratigraphy
The Ordovician News is a newsletter of the Subcommission on Ordovician Stratigraphy. Compiled annually, it contains subcommission’s report on activities, discussion on Ordovician stratigraphy, data on current research and publications, list of people involved in Ordovician research, meeting announcements etc. Relevant contributions should be ...
International Commission on Stratigraphy
The annual Ordovician News provides an in-depth overview of the activities of members of our community and contact information to facilitate strengthing scientific connections. See the latest issue and the backlog of the Ordovician News page.
Earth Had a Ring 466 Million Years Ago, Study Says
Sep 20, 2024 · A study published this month links an uptick in impact craters during the Ordovician Period, an era before animals lived on land, to a ring made of asteroid debris that encircled our planet for...
Ordovician - Wikipedia
The Ordovician (/ ɔːr d ə ˈ v ɪ ʃ i. ə n,-d oʊ-,-ˈ v ɪ ʃ ən / or-də-VISH-ee-ən, -doh-, - VISH-ən) [9] is a geologic period and system, the second of six periods of the Paleozoic Era, and the second of twelve periods of the Phanerozoic Eon.The Ordovician spans 41.6 million years from the end of the Cambrian Period 485.4 Ma (million years ago) to the start of the Silurian ...
Ordovician–Silurian true polar wander as a mechanism for severe ...
Dec 26, 2022 · The Ordovician–Silurian transition experienced severe, but enigmatic, glaciation, as well as a paradoxical combination of mass extinction and species origination.
Impact of global climate cooling on Ordovician marine …
Oct 10, 2023 · Global cooling has been proposed as a driver of the Great Ordovician Biodiversification Event, the largest radiation of Phanerozoic marine animal Life.
Ordovician specialists representing not only a large(r) variety of fossil groups, but also an increasing panel of other disciplines, including sedimentology, sequence stratigraphy, (isotope) geochemistry, geochronology, and others.
Impacts on Evolution following the Late Ordovician Mass …
Nov 30, 2018 · A new study delves deeper into the effects of the Late Ordovician event by focusing on the phylogenetic relationships between strophomenoid brachiopods. Four families/subfamilies were sampled for the study from this diverse superfamily of brachiopods.
The Ordovician System: Key concepts, events and its distribution …
Mar 10, 2023 · The Ordovician was a key period in the biological and geological history of the planet. ‘A Global Synthesis of the Ordovician System’ is presented in two volumes of The Geological Society, Special Publications.
Late Ordovician climate change and extinctions driven by …
Dec 2, 2021 · Increased volcanism-related phosphorus delivery to the Late Ordovician ocean helps explain widespread cooling and eutrophication-driven extinctions, as shown by a biogeochemical model ...
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