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 once wore a Saturn-like ring, study of ancient craters …
WEB3 days ago · The Ordovician was a tumultuous time for our planet — it was one of the coldest periods in the last 500 million years and saw a dramatic uptick in the rate of meteorites striking Earth.
Earth May Have Had Rings Like Saturn 466 Million Years Ago
WEB2 days ago · The researchers' idea that Earth once had rings comes from reconstructions of Earth's plate tectonics from the Ordovician period —which ran between 485.4 million years and 443.8 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.
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.
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.
The Ordovician System: Key concepts, events and its distribution …
WEBThe 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 …
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 ...
Oxygenation of the Baltoscandian shelf linked to Ordovician ...
WEBOct 12, 2023 · Animal diversification coincided with increasing oxygenation of the Baltoscandian continental shelf from the Early to Middle Ordovician, according to iodine and calcium records.
Earth may once have had Saturn-like ring, scientists say
WEB2 days ago · Earth may briefly have had a ring system similar to Saturn ’s over 450 million years ago during a period of unusually intense meteorite bombardment, a new study proposes.
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