Ordovician and Silurian sea–water chemistry, sea level, and climate: a synopsis
Following the Cambrian Explosion and the appearance in the fossil record of most animal
phyla associated with a range of new body plans, the Ordovician and Silurian periods …
phyla associated with a range of new body plans, the Ordovician and Silurian periods …
Environmental changes in the Late Ordovician–early Silurian: Review and new insights from black shales and nitrogen isotopes
Abstract The Late Ordovician (Katian-Hirnantian) through earliest Silurian (Rhuddanian)
interval was a time of varying climate and sea level, marked by a peak glacial episode in the …
interval was a time of varying climate and sea level, marked by a peak glacial episode in the …
The Ordovician of Scandinavia: a revised regional stage classification
Abstract The Ordovician of Scandinavia (ie Denmark, Norway and Sweden) has been
investigated for over two centuries and, through time, various chronostratigraphic schemes …
investigated for over two centuries and, through time, various chronostratigraphic schemes …
An extraterrestrial trigger for the mid-Ordovician ice age: Dust from the breakup of the L-chondrite parent body
The breakup of the L-chondrite parent body in the asteroid belt 466 million years (Ma) ago
still delivers almost a third of all meteorites falling on Earth. Our new extraterrestrial chromite …
still delivers almost a third of all meteorites falling on Earth. Our new extraterrestrial chromite …
Modeling the early Paleozoic long-term climatic trend
The early Paleozoic climate has been described as warm and equable. However, recent
data based on conodont oxygen isotopic composition reveal a large, long, cooling trend …
data based on conodont oxygen isotopic composition reveal a large, long, cooling trend …
The Bohemo‐Iberian regional chronostratigraphical scale for the Ordovician System and palaeontological correlations within South Gondwana
The Bohemo‐Iberian regional scale for South Gondwana, involving the 'Mediterranean
Province', comprises five regional stages (Arenigian, Oretanian, Dobrotivian, Berounian and …
Province', comprises five regional stages (Arenigian, Oretanian, Dobrotivian, Berounian and …
Sea-level curve for the Middle to early Late Ordovician in the Armorican Massif (western France): Icehouse third-order glacio-eustatic cycles
This contribution deals with the Middle to early Late Ordovician of the Armorican Massif
(western France). The aim is to reconstruct a multi-order eustatic curve from the stratigraphic …
(western France). The aim is to reconstruct a multi-order eustatic curve from the stratigraphic …
Geochronology and geochemistry of Ordovician felsic volcanism in the Southern Armorican Massif (Variscan belt, France): Implications for the breakup of Gondwana
M Ballevre, S Fourcade, R Capdevila, JJ Peucat… - Gondwana …, 2012 - Elsevier
Low-grade, porphyritic felsic metavolcanics make up a significant volume of the South
Armorican domain (Variscan belt, France). Their age and geochemistry are the first focus of …
Armorican domain (Variscan belt, France). Their age and geochemistry are the first focus of …
The Ordovician record of North and West Africa: unravelling sea-level variations, Gondwana tectonics, and the glacial impact
JF Ghienne, H Abdallah, R Deschamps, M Guiraud… - 2023 - pubs.geoscienceworld.org
Abstract The Ordovician of North and West Africa comprises three main transgressive–
regressive sequences understood as 'second-order'cycles of 10–15 myr duration. Tide-to …
regressive sequences understood as 'second-order'cycles of 10–15 myr duration. Tide-to …
Fractures distribution and basement-cover interaction in a polytectonic domain: A case study from the Saghro Massif (Eastern Anti-Atlas, Morocco)
Abstract From the Neoproterozoic to Cenozoic, different extensional and transpressional
tectonics events occurred during the Pan-African, Variscan and Alpine orogenic cycles in the …
tectonics events occurred during the Pan-African, Variscan and Alpine orogenic cycles in the …