Earth Might Have Had a Ring 466 Million Years Ago
WEB6 hours ago · 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 News
WEBThe 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 ...
Earth may have had a ring system 466 million years ago - MSN
WEBIn a discovery that challenges our understanding of Earth's ancient history, researchers have found evidence suggesting that Earth may have had a ring system that formed around 466 million years...
International Commission on Stratigraphy
WEBThe 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.
Ordovician–Silurian true polar wander as a mechanism for severe ...
WEBDec 26, 2022 · The Ordovician–Silurian transition experienced severe, but enigmatic, glaciation, as well as a paradoxical combination of mass extinction and species origination.
Late Ordovician climate change and extinctions driven by …
WEBDec 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 ...
WEBOrdovician 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.
The Ordovician System: Key concepts, events and its distribution …
WEBMar 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.
The Cabrières Biota (France) provides insights into Ordovician …
WEBFeb 9, 2024 · The discovery of the Cabrières Biota expands the range of preserved tissue types found in the Ordovician of Montagne Noire, revealing entirely soft taxonomic groups such as algae and non ...
Ordovician - Wikipedia
WEBThe 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. 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 Period ...
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