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Armorica Plate

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Journal Article
Journal: Geology
Published: 01 August 1985
Geology (1985) 13 (8): 589.
Journal Article
Journal: Geology
Published: 01 August 1985
Geology (1985) 13 (8): 589-590.
Journal Article
Journal: Geology
Published: 01 May 1985
Geology (1985) 13 (5): 380.
Journal Article
Journal: Geology
Published: 01 May 1985
Geology (1985) 13 (5): 380-381.
Journal Article
Journal: Geology
Published: 01 October 1984
Geology (1984) 12 (10): 579-582.
...Hervé Perroud; Rob Van der Voo; Norbert Bonhommet Abstract New paleomagnetic data support the contention that Armorica and Gondwana formed a coherent block until Ordovician time. However, by Early Devonian time, Armorica collided with the North American–northern European assembly to form the Old...
Series: GSA Memoirs
Published: 01 January 1989
DOI: 10.1130/MEM172-p447
... constituted an Armorica plate that collided with the North American craton by Early Devonian time. Ordovician and older paleopoles from Avalon show high southerly paleolatitudes and have strong affinities with those for Hercynian Europe, as well as Gondwanaland, suggesting that Armorica was located adjacent...
Journal Article
Journal: Geology
Published: 01 October 1986
Geology (1986) 14 (10): 879-882.
... of the volcanics indicate formation in an active continental margin at the northern edge of the Armorica plate. The magmatism most likely marks subduction processes related to closure of a medio-European ocean separating Armorica from Baltica. Geological Society of America 1986 ...
Series: Geological Society, London, Special Publications
Published: 01 January 2009
DOI: 10.1144/SP325.5
EISBN: 9781862395732
... Avalonia should be considered as a separate (micro-)continent on a separate (micro-)plate. Armorica has many different definitions and is commonly considered to be composed of several terranes. It is, however, not at all evident if Armorica was a separate (micro-)continent and/or an independent (micro...
FIGURES
Journal Article
Journal: Geology
Published: 01 April 1990
Geology (1990) 18 (4): 303-306.
...Ch. Noblet; J. P. Lefort Abstract The vast extent of sedimentation deposits making up the Grès Armoricain and its equivalents over the north Gondwanan domain is used in this study to test the hypothesis of continuity between the Armorica and Gondwana plates during the Early Ordovician...
Journal Article
Published: 01 July 2008
Journal of Paleontology (2008) 82 (4): 800-810.
...Aurelien Delabroye; Catherine Cronier Abstract A large number of well-preserved immature exoskeletons enable the first detailed quantitative description of the ontogeny of the trinucleid Marrolithus bureaui ( Oehlert, 1895 ) from the Lower Caradoc of the Armorican Massif (Armorica, northwest France...
FIGURES | View All (8)
Journal Article
Published: 01 May 2009
Bulletin de la Société Géologique de France (2009) 180 (3): 247-261.
..., already recognised in other areas of southern Armorica, but does not support the 200 km-long flat detachment fault model. The Armorican Massif is subdivided into several tectono-metamorphic domains by two dextral shear zones, namely the North Armorican shear zone (NASZ) and South Armorican shear zone...
FIGURES | View All (7)
Journal Article
Published: 01 February 1991
Journal of the Geological Society (1991) 148 (1): 55-64.
... by later Variscan strike-slip tectonics in the Palaeozoic evolution of southern Armorica. The tectonic model involved subduction, the creation of a volcanic arc and its associated back-are basin and their eventual destruction during continent-continent collision. References Albarède F. Thermal...
Journal Article
Published: 01 May 2004
Journal of the Geological Society (2004) 161 (3): 463-476.
..., based on sedimentary and faunal evidence indicating that the palaeogeographical affinities between southern Europe and northern Africa persisted during the Silurian and Devonian. Furthermore, the suture between the hypothetical Armorica plate and Gondwana has not been found, putting in doubt...
FIGURES | View All (7)
Series: GSA Memoirs
Published: 01 January 1983
DOI: 10.1130/MEM158-p19
... continents in the Permian. Earlier, the northern continents (the North American craton, the Baltic Shield-Russian Platform, and Hercynian Europe, herein called Armorica) assembled. The timing of this coalescing of the northern continents cannot be precisely identified by the available paleo-poles...
Series: Geological Society, London, Geology of Series
Published: 01 January 2006
DOI: 10.1144/GOEWP.9
EISBN: 9781862393882
... to short-lived southward-directed subduction of the Rhenohercynian oceanic plate beneath Armorica. A return to northward-directed subduction of the Theic oceanic plate along the southern margin of Iberia/Armorica ( Fig. 9.1 ) resulted in a Late Devonian–Early Carboniferous phase of bacK–Arc extension...
FIGURES | View All (34)
Journal Article
Published: 01 July 1981
Journal of the Geological Society (1981) 138 (4): 375-405.
.... ‘Londinia’ exposes mostly Old Red Sandstone, Lower Carboniferous and Upper Jurassic; Cornubia-New Red Sandstone and Upper Jurassic; Armorica-Precambrian, New Red Sandstone and Jurassic (with Middle Jurassic igneous rocks or pyroclastics); Hibernia-Lower and Upper Palaeozoic. Contemporary volcanicity...
Series: Geological Society, London, Special Publications
Published: 01 January 2000
DOI: 10.1144/GSL.SP.2000.179.01.13
EISBN: 9781862394278
... Crystalline High on the leading edge of Armorica). Geometric analysis and isostatically corrected balanced cross-sections show that the basal detachment propagated from the oceanic realm into the passive margin by repeated ductile footwall failure during lithospheric flexure of the weak lower plate (effective...
FIGURES | View All (10)
Journal Article
Published: 01 June 1991
Journal of the Geological Society (1991) 148 (3): 423-425.
... time, whereas Armorica remained proximal to northern Africa throughout the Ordovician. The combined data therefore establish that Avdonia and Armorica formed separate micro-continents when rifting from Gondwana. © Geological Society of London 1991 1991 Geological Society of London Geological...
Journal Article
Published: 01 January 2000
Journal of the Geological Society (2000) 157 (1): 1-10.
... (south of the TESZ), which was high latitude. As the Ordovician progressed, various terranes separated and drifted away from the Gondwana supercontinent at different times, namely Avalonia (which was probably originally part of Gondwana near South America), Iberia–Armorica, Perunica (Bohemia) and various...
FIGURES | View All (9)
Series: Geological Society, London, Special Publications
Published: 01 January 2009
DOI: 10.1144/SP325.2
EISBN: 9781862395732
... they termed the Arabian plate; Millson et al. (1996) also reviewed the integrity of the various tectonic components of the area, as did Ruban et al. (2007) . Fortey (1994) described typically Gondwanan trilobites from the late Cambrian of Oman, as did Fortey & Morris (1982) equally typical...
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