Results 171 to 180 of about 4,105 (193)

Simultaneous horst-basin formation and magmatism during Late Variscan transtension: evidence from 40 Ar/ 39 Ar and 207 Pb/ 206 Pb geochronology in the Ruhla Crystalline Complex

International Journal of Earth Sciences, 2000
Ar/39Ar–mica and 207Pb/206Pb–zircon dates are presented and combined with existing P–T data and the sedimentary record. These data indicate that the RCC was faulted into three segments which underwent different exhumation histories during the Late Carboniferous/Early Permian.
A. Zeh, M. A. Cosca, H. Brätz, M. Okrusch, M. Tichomirowa   +4 more
openaire   +1 more source

Evaluating the controls on the origin of tourmaline-bearing rocks in peraluminous and metaluminous systems: examples from Late-Variscan magmatism of Sardinia (Italy).

2019
In magmatic systems, intensive and compositional parameters are commonly invoked to account for tourmaline saturation in the melt. To model the frequent occurrence of tourmaline-bearing rocks associated with peraluminous intrusions, a large emphasis is typically given to Al2O3 saturation index of magmas (ASI> 1.2).
Andreozzi G. B., Bosi F., Conte A. M., Cuccuru S., Naitza S.   +4 more
openaire   +5 more sources

The late Variscan basic magmatism -- the Höhenberg sill in the Thuringian Forest

Zeitschrift der Deutschen Geologischen Gesellschaft, 1996
Gerhard Katzung, Karsten Obst
openaire   +1 more source

Dyke magmatism in the central Harz mountains and its implication for Late Variscan extensional tectonics

Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 2001
Karsten Obst, Gerhard Katzung, Urte Haupt   +2 more
openaire   +1 more source

Changing Carboniferous Arc Magmatism in the Ossa-Morena Zone (Southwest Iberia): Implications for the Variscan Belt

Minerals (Basel, Switzerland), 2022
José M Fuenlabrada, Carmen Rodriguez
exaly  

). Late magmatic controls on the origin of schorlitic and foititic tourmalines from late-Variscan peraluminous granites of the Arbus pluton (SW Sardinia, Italy): Crystal-chemical study and petrological constraints.

2019
Abstract: Tourmalines from the late-Variscan Arbus pluton (SW Sardinia) and its metamorphic aureole were structurally and chemically characterized by single-crystal X-ray diffraction, electron and nuclear microprobe analysis, Mössbauer, infrared and optical absorption spectroscopy, to elucidate their origin and relationships with the magmatic evolution
Bosi, F., Naitza, S., Skogby, H., Secchi, F., Conte, A.M., Cuccuru, S., Hålenius, U., De La Rosa, N., Kristiansson, P., Charlotta Nilsson, E.J., Ros, L., Andreozzi, G.B.   +23 more
openaire   +3 more sources

Biotite geochronology (sup>40Arrad/K, 40Arrad/39ArK, 87Srrad/87Rb) of Late Variscan magmatic rocks in the Thuringian Forest, Germany

Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 2001
Martin Goll, Hans Joachim Lippolt
openaire   +1 more source

U–Pb zircon geochronological and petrographic constraints on late to post‐collisional Variscan magmatism and metamorphism in the Ligurian Alps, Italy

Geological Journal, 2012
Matteo Maino, Laura Gaggero, Silvio Seno
exaly  

Origin and duration of late orogenic magmatism in the foreland of the Variscan belt (Lesponne — Chiroulet — Neouvielle area, French Pyrenees)

Lithos, 2019
Baptiste Lemirre, Bryan Cochelin, Stephanie Duchene   +2 more
exaly  

Pre-Variscan tectonic events and Late Ordovician magmatism in the Central Pyrenees: U–Pb age and Hf in zircon isotopic signature from subvolcanic sills in the Pallaresa massif

Journal of Iberian Geology, 2018
Pilar Clariana, Aratz Beranoaguirre, Joaquin García-Sansegundo   +2 more
exaly