Results 111 to 120 of about 17,177 (230)

Spinels of Variscan olivine hornblendites related to the Montnegre granitoids revisited (NE Spain): petrogenetic evidence of mafic magma mixing

open access: yesGeologica Acta, 2017
Olivine hornblendites (cortlandtites) form part of the Montnegre mafic complex related to late-Variscan I-type granitoids in the Catalan Coastal Ranges.
G. GALÁN   +3 more
doaj  

Variscan deformation of the Hesperian massif in the Lousã mountain range (central Portugal) [PDF]

open access: yes, 2004
[Abstract] The occidental region of the Central-Iberian Zone of the Variscan Iberian massif, in the central part of Portugal (Lousã mountain range), has a Variscan tectonostructural organization as the one recognized in the occidental border of the ...
Gama Pereira, Luis C.   +2 more
core   +1 more source

Late- to post-Variscan extensional tectonics in south Cornwall [PDF]

open access: yes, 2013
Faults which post-date Variscan contractional deformation are ubiquitous in south Cornwall. Three broad geometric/kinematic types can be defined. The first type comprises low angle (dip 45°) extensional faults which generally offset earlier low-angle ...
Shail, RK, Wilkinson, J.J.
core  

Variscan orogeny in Corsica: new structural and geochronological insights, and its place in the Variscan geodynamic framework

open access: yes, 2014
International audienceIn Western Corsica, remnants of pre-batholitic lithological and metamorphic assemblages are preserved as km-scale septa enclosed within Lower Carboniferous to Early Permian plutons.
Faure, Michel   +6 more
core   +4 more sources

cGPS Record of Active Extension in Moroccan Meseta and Shortening in Atlasic Chains under the Eurasia-Nubia Convergence. [PDF]

open access: yesSensors (Basel), 2023
Chalouan A   +7 more
europepmc   +1 more source

The use of aerial photographs for estimating school sizes of cetaceans [PDF]

open access: yes, 1985
ENGLISH: The accuracy and precision of dolphin school size estimates based on aerial photograph counts were examined using data collected on recent aerial and ship surveys.
Clark, William G.   +2 more
core  

The Addition of Felsic Sediments to the Lower Continental Crust During the Variscan Orogeny

open access: yesGeochemistry, Geophysics, Geosystems
Lower crustal metasedimentary xenoliths (garnet‐sillimanite granulites) from the Bournac breccia pipe in the Massif Central, France, provide a robust example of sediments transported to depth and incorporated into stable lower continental crust during a ...
M. F. Ringwood   +2 more
doaj   +1 more source

Organization of pre-Variscan basement areas at the north-Gondwanan margin [PDF]

open access: yes, 2005
Pre-Variscan basement elements of Central Europe appear in polymetamorphic domains juxtaposed through Variscan and/or Alpine tectonic events. Consequently, nomenclatures and zonations applied to Variscan and Alpine structures, respectively, cannot be ...
Borel, Gilles D.   +3 more
core  

Quantitative constraints on flood variability in the rock record. [PDF]

open access: yesNat Commun, 2023
McLeod JS   +5 more
europepmc   +1 more source

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