Ordovician News
网页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 ...
Earth may have had a ring system 466 million years ago - Phys.org
网页3 天之前 · DOI: 10.1016/j.epsl.2024.118991. In 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 ...
Earth once wore a Saturn-like ring, study of ancient craters …
网页3 天之前 · 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.
International Commission on Stratigraphy
网页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.
Ordovician–Silurian true polar wander as a mechanism for severe ...
网页2022年12月26日 · The Ordovician–Silurian transition experienced severe, but enigmatic, glaciation, as well as a paradoxical combination of mass extinction and species origination.
网页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.
Late Ordovician climate change and extinctions driven by …
网页2021年12月2日 · 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 ...
网页2023年10月12日 · 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 Have Had Rings Like Saturn 466 Million Years Ago
网页2 天之前 · 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 ago ...
The Ordovician System: Key concepts, events and its distribution …
网页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.
跳至内容