The late Ordovician mass extinction
PM Sheehan - Annual Review of Earth and Planetary Sciences, 2001 - annualreviews.org
▪ Abstract Near the end of the Late Ordovician, in the first of five mass extinctions in the
Phanerozoic, about 85% of marine species died. The cause was a brief glacial interval that …
Phanerozoic, about 85% of marine species died. The cause was a brief glacial interval that …
[HTML][HTML] Ordovician timescale in Estonia: recent developments
Over 150 years of progress in the Ordovician geology and stratigraphy of Estonia has
resulted in one of the most precise Ordovician timescales in the world. In this paper, an up-to …
resulted in one of the most precise Ordovician timescales in the world. In this paper, an up-to …
Middle and Upper Ordovician carbon isotope chemostratigraphy in Baltoscandia: a correlation standard and clues to environmental history
The Baltoscandian epeiric sea was characterised by relatively slow but continuous
carbonate deposition from the Middle Ordovician up to the Silurian. Relatively good …
carbonate deposition from the Middle Ordovician up to the Silurian. Relatively good …
Post-Hunnebergian Ordovician carbon isotope trend in Baltoscandia, its environmental implications and some similarities with that of Nevada
D Kaljo, T Martma, T Saadre - Palaeogeography, Palaeoclimatology …, 2007 - Elsevier
Carbon isotope changes during post-Hunnebergian Ordovician time were investigated. As
the corresponding sequence of rocks is stratigraphically nearly complete in Baltoscandia, an …
the corresponding sequence of rocks is stratigraphically nearly complete in Baltoscandia, an …
First record of the Hirnantian (Upper Ordovician) δ13C excursion in the North American Midcontinent and its regional implications
SM Bergstroem, MM Saltzman, B Schmitz - Geological Magazine, 2006 - cambridge.org
The most prominent of the two major global δ13C excursions in the Ordovician, the
Hirnantian δ13C excursion (HICE), which is previously recorded from the uppermost …
Hirnantian δ13C excursion (HICE), which is previously recorded from the uppermost …
[图书][B] Were transgressive black shales a negative feedback modulating glacioeustasy in the Early Palaeozoic Icehouse
The Early Palaeozoic Icehouse (Late Ordovician-Early Silurian, c. 455–425 Ma) was a
remarkable event in the Earth's climatic history, marked by extensive glaciations occurring at …
remarkable event in the Earth's climatic history, marked by extensive glaciations occurring at …
Late Ordovician carbon isotope trend in Estonia, its significance in stratigraphy and environmental analysis
Carbon isotope changes during most of Late Ordovician time (from the mid-Caradoc
Kinnekulle K-bentonite until the beginning of the Silurian) were investigated. As the …
Kinnekulle K-bentonite until the beginning of the Silurian) were investigated. As the …
Implications of Gondwana glaciations in the Baltic late Ordovician and Silurian and a carbon isotopic test of environmental cyclicity
L'influence de la glaciation du Gondwana à l'Ordovicien supérieur et au Silurien de la
Baltique. Un test de la cyclicité de l'environnement à l'aide des isotopes du carbone, Sur le …
Baltique. Un test de la cyclicité de l'environnement à l'aide des isotopes du carbone, Sur le …
The effects of the final stages of the Late Ordovician glaciation on marine palynomorphs (chitinozoans, acritarchs, leiospheres) in well Nl-2 (NE Algerian Sahara)
F Paris, A Bourahrouh, AL Hérissé - Review of Palaeobotany and …, 2000 - Elsevier
Palynomorph assemblages, especially chitinozoans and acritarchs, from the Upper
Ordovician of well Nl-2 (north-east of the Algerian Sahara) are studied in order to precisely …
Ordovician of well Nl-2 (north-east of the Algerian Sahara) are studied in order to precisely …
The Middle Caradoc facies and faunal turnover in the Late Ordovician Baltoscandian palaeobasin
A Late Ordovician episode of remarkable biotic, climatic, sea level and facies changes,
named here as the Middle Caradoc Facies and Faunal Turnover, took place in the …
named here as the Middle Caradoc Facies and Faunal Turnover, took place in the …