Results 171 to 180 of about 7,142 (220)
Some of the next articles are maybe not open access.
Elements
Numerical and analogue modeling provides insights into dynamic processes shaping convergent plate boundaries. In the case of the Variscan orogeny, efforts to explain observations using physics-based models started in the late 1990s with 2D numerical simulations and have evolved towards advanced 2D petrological–thermomechanical numerical simulations and
Taras Gerya, Petra Maierová
openaire +1 more source
Numerical and analogue modeling provides insights into dynamic processes shaping convergent plate boundaries. In the case of the Variscan orogeny, efforts to explain observations using physics-based models started in the late 1990s with 2D numerical simulations and have evolved towards advanced 2D petrological–thermomechanical numerical simulations and
Taras Gerya, Petra Maierová
openaire +1 more source
Chemical Geology, 1987
Abstract A systematic mapping of crustal fluids using fluid inclusion analysis has been carried out for the Variscan basement and the overlying Permo-Mesozoic sedimentary cover in the Federal Republic of Germany. Several distinctive fluid systems can be differentiated.
H.-J. Behr +3 more
openaire +1 more source
Abstract A systematic mapping of crustal fluids using fluid inclusion analysis has been carried out for the Variscan basement and the overlying Permo-Mesozoic sedimentary cover in the Federal Republic of Germany. Several distinctive fluid systems can be differentiated.
H.-J. Behr +3 more
openaire +1 more source
The variscan geology of the Pyrenees
Tectonophysics, 1986Abstract The main outlines of the geology of the Variscan part of the Pyrenees are discussed. Rocks involved in this cycle are high-grade basement gneisses, Palaeozoic sediments and their metamorphic equivalents, late intrusive granodiorites and early, pre-Variscan granites.
openaire +1 more source
Variscan to late-Variscan record in Lesser Kabylia (Northeastern Algeria)
AlKaPeCa terranes—comprising the Alboran, Kabylia, Peloritani, and Calabria domains—represent Mesozoic terranes involving Paleozoic metamorphic basement that was dispersed to form the allochthonous internal zones of peri-Mediterranean orogens (Betics and Maghrebides).Cerine Bouadani +7 more
openaire +1 more source
1995
The analysis of an orogen remains incomplete if there is no discussion about the development of its foreland. With regard to the mid-European Variscides, the situation is considerably complicated because the corresponding Paleozoic rocks of the foreland are overlain by the thick Young Paleozoic to Cenozoic platform cover of the Central European Basin ...
openaire +1 more source
The analysis of an orogen remains incomplete if there is no discussion about the development of its foreland. With regard to the mid-European Variscides, the situation is considerably complicated because the corresponding Paleozoic rocks of the foreland are overlain by the thick Young Paleozoic to Cenozoic platform cover of the Central European Basin ...
openaire +1 more source
Large Fossil Hydrothermal Systems in Variscan Granites and Pre-Variscan Gneisses of the Schwarzwald
Mineralogical Magazine, 1998The Schwarzwald is part of the Moldanubium core zone of the Variscan fold belt. The basement consists of orthoand paragneisses of Caledonian and of Precambrian age. S-type granites are exposed in four different regions of the Schwarzwald: north, central, southwest and southeast. The granites of each region form a granite series, the separate intrusions
openaire +1 more source
Variscan orogeny: a three ocean problem
ElementsVariscan orogenic evolution was dominated by closure of the Rheic Ocean and its two successors, the Rhenohercynian and Paleotethys oceans. The Rheic subduction started in late Silurian – early Devonian at the margin of Laurussia but also along two Gondwana derived continental ribbons. Rapid mid-Devonian roll-back of peri-Laurentian subduction
Karel Schulmann +2 more
openaire +1 more source
1988
Abstract The Variscan – Alleghanian orogen stretches from the southeastern United States to eastern Europe and fragments of it are also detected in eastern and northeastern Africa. The orogen has originally been produced by the collision between Gondwana, Laurentian and Baltic cratons, as well as the intervening microcontinents.
openaire +1 more source
Abstract The Variscan – Alleghanian orogen stretches from the southeastern United States to eastern Europe and fragments of it are also detected in eastern and northeastern Africa. The orogen has originally been produced by the collision between Gondwana, Laurentian and Baltic cratons, as well as the intervening microcontinents.
openaire +1 more source
1989
Paleozoic formations crop out extensively in Morocco, north of the West African craton. With regard to the Hercynian deformation, various structural domains can be distinguished in Morocco. The undeformed series of the southern flank of the Tindouf basin belong to the tabular cover of the Reguibate shield. Zemmour and Anti-Atlas are parts of a marginal
openaire +1 more source
Paleozoic formations crop out extensively in Morocco, north of the West African craton. With regard to the Hercynian deformation, various structural domains can be distinguished in Morocco. The undeformed series of the southern flank of the Tindouf basin belong to the tabular cover of the Reguibate shield. Zemmour and Anti-Atlas are parts of a marginal
openaire +1 more source
Corsica and Sardinia in the Variscan Chain
1994Corsica and Sardinia are two islands which separate the Western Mediterranean Sea into the Provencal Basin in the West and the Tyrrhenian Sea in the East (Fig. 1). Paleomagnetic, structural, and lithological similarities indicate that Corsica and Sardinia can be correlated with the Provence basement in southeastern France (Arthaud and Matte 1966 ...
J. M. Lardeaux +5 more
openaire +1 more source