Results 1 to 10 of about 953 (179)
Le Massif Armoricain / The Armorican Massif
Sciences Géologiques Bulletin, 1991 Nous tentons dans cette synthèse de rassembler l'essentiel des données généralement admises concernant la stratigraphie, le magmatisme, le métamorphisme et la tectonique du Massif Armoricain. Ces données montrent que le socle armoricain représente l'héritage d'une longue évolution dont les témoins les plus anciens ont un âge voisin de 2000 Ma et qui s ...
Michel Ballevre
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Palaeozoic history of the Armorican Massif: Models for the tectonic evolution of the suture zones [PDF]
Comptes Rendus - Geoscience, 2009 The Armorican Massif (western France) provides an excellent record of the Palaeozoic history of the Variscan belt. Following the Late Neoproterozoic Cadomian orogeny, the Cambro-Ordovician rifting was associated with oceanic spreading. The Central- and North-Amorican domains (which together constitute the core of the Armorica microplate) are bounded by
Michel Ballevre +2 more
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Timescales of regional circulation of saline fluids in continental crystalline rock aquifers (Armorican Massif, western France) [PDF]
Hydrology and Earth System Sciences, 2015 In recent decades, saline fluids have been sampled worldwide at great depths in continental basements. Although some of them have been attributed to marine transgressions, the mechanisms allowing their circulation are not understood.
A. Armandine Les Landes +4 more
doaj +2 more sources
Late Devonian to Early Carboniferous palaeomagnetic poles from the Armorican Massif, France [PDF]
Geophysical Journal International, 1979 Summary In order to test plate tectonic hypotheses for the Hercynian orogeny in western Europe, Late Devonian and Cambro-Ordovician redbeds and volcanics have been palaeomagnetically studied. The Late Devonian redbeds show nearly univectorial remanent magnetizations during stepwise thermal, chemical and alternating field demagnetization and yield a ...
Jones, Meridee +2 more
openaire +5 more sources
Late Pleistocene–Holocene denudation, uplift, and morphology evolution of the Armorican Massif (western Europe) [PDF]
Earth Surface DynamicsElevated Plio-Pleistocene coastal and marine markers in stable continental regions are commonly explained by a combination of eustatic sea-level variations and large-scale geological processes (e.g., crustal or mantle dynamics).
O. Malcles +3 more
doaj +2 more sources
Palaeogeography, Palaeoclimatology, Palaeoecology, 2007 In the Armorican Massif (NW France), the Middle Ordovician formations contain abundant phosphatic (P) beds associated with terrigenous sediments laid down on a storm-dominated shelf Facies analysis and sequence stratigraphy carried out on sections ...
Marie-Pierre Dabard +2 more
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Eocambrian?Cambrian palaeomagnetism of the Armorican Massif, France [PDF]
Geophysical Journal International, 1980 In an attempt to clarify pre-Hercynian continental configurations, palaeomagnetic data were collected from the spilites de Paimpol (640 ± 12 Myr), the diorite de St Quay (583 ± 40 Myr), the gabbro de Keralain (undated), the granite de Port-Scarff (557 ± 16 Myr), the rhyolitic ignimbrites of Lézardrieux (546 ± 8 Myr) and the rhyolites de St Germain-le ...
Hagstrum, Jonathan T. +3 more
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An Atypical Silurian Myodocope Ostracod from the Armorican Massif, France [PDF]
Acta Palaeontologica Polonica, 2012 A new myodocope ostracod Sineruga insolita gen. et sp. nov. is herein described from the Armorican Massif (France). Sineruga resembles Silurian myodocopes (i.e., bolbozoids and cypridinids) in having anterior features (thinner carapace) possibly related to vision.
Vincent Perrier, Perrier, V.
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Geophysical Journal International, 2005 A Mw 4.3 earthquake occurred on 2002 September 30, in the Armorican Massif, NW France. Since it was one of the largest events ever recorded in this region, this was the opportunity to improve our seismotectonic knowledge of the Armorican Massif.
Pierre Arroucau +2 more
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Ore Geology Reviews, 2020 International audienceSeveral kaolinite occurrences of economic interest have been reported in Europe and are usually interpreted as resulting from weathering during the Paleogene tropical climate.
Anne Gaudin +2 more
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