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The aeromagnetic map of the French Cadomian belt
Tectonophysics, 2001Abstract In order to obtain an image of the subsurface of the Armorican Massif, two detailed aeromagnetic surveys were combined to obtain an aeromagnetic map at 350 m altitude with an interpolated grid of 250 m×250 m. The map shows good correlation between the magnetic anomalies and known geological structures and also distinguishes between long- and
Armand Galdeano +4 more
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Cadomian crustal evolution of Turkey, Iran, and environs
International Geology Review, 2021The Cadomian belt (ca. 600–500 Ma) extends from North America through Europe to Iran (Figure 1).
Gültekin Topuz +2 more
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Model for the evolution of the Avalonian-Cadomian belt
Geology, 1989The inception and termination of the ca. 670-550 Ma Avalonian-Cadomian orogenic cycle are interpreted in terms of the amalgamation and breakup of a late Precambrian supercontinent. Synorogenic, arc-related volcano-sedimentary and granitoid rocks are attributed to oblique, southward-directed subduction along the margin of the supercontinent after its ...
J. Brendan Murphy, R. Damian Nance
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International Geology Review, 2016 The Biarjmand granitoids and granitic gneisses in northeast Iran are part of the Torud–Biarjmand metamorphic complex, where previous zircon U–Pb geochronology show ages of ca. 554–530 Ma for orthogneissic rocks.
Xian-Hua Li +2 more
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AVALONIAN AND CADOMIAN GEOLOGY OF THE NORTH ATLANTIC
Terra Nova, 19911990, £57.00, 252 pp. Blackie, Chapman and Hall.
R.A. Strachan, G.K. Taylor
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Cadomian magmatism in the North Armorican Massif
Geological Society, London, Special Publications, 1990Abstract This review concerns intrusive magmatism related to the Cadomian orogeny in the northeastern part of the Armorican Massif of France. The Cadomian orogeny is interpreted to represent tectono-thermal activity in a continental margin above a subduction zone. The North Armorican Shear Zone (NASZ) separates two major Cadomian
Michael Brown +3 more
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Lithos, 2015 The Tauride block in Turkey is a peri-Gondwana, Cadomian-type terrane that rifted from the Afro-Arabian margin of Gondwana in the Permo-Triassic and re-accreted to Arabia in the Neogene.
Avishai Abbo, Dov Avigad, Axel Gerdes
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Tectonic evolution of the Cadomian belt in north Brittany
Geological Society, London, Special Publications, 1990Abstract A discrete geotectonic unit, here termed the St Brieuc Terrane, has been identified within the late Precambrian Cadomian belt of the Armorican Massif. This terrane contains syn-orogenic Brioverian supracrustal rocks which accumulated in a marginal basin and were intruded by subduction-related calc-alkaline plutonic ...
R. A. Strachan, R. A. Roach
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Cadomian strike-slip tectonics in NE Brittany
Geological Society, London, Special Publications, 1990Abstract The Precambrian basement of NE Brittany contains a number of NNE-trending migmatite belts of Cadomian ( c. 540 Ma) age. These are heterogeneously reworked by subvertical, ductile shear zones which occur both within individual migmatite belts, and along their boundaries with low-grade Brioverian ...
P. J. Treloar, R. A. Strachan
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Cadomian basement of the palaeozoic platform in central Europe
Studia Geophysica et Geodaetica, 1995In central Europe, evidence for Cadomian basement occurs from the Midlands Massif in the United Kingdom to the Moesian Platform in Romania. The patchily exposed basement rocks either have survived almost intact through the Phanerozoic (e.g. Lusatia), overstepped by different Palaeozoic strata, or have been reworked to various degrees (e.g.
Andrzej Źelaźniewicz, Peter Bankwitz
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