Results 61 to 70 of about 1,743 (174)

Palaeozoic oolitic ironstone of the French Armorican Massif: a chemical and structural trap for orogenic base metal-As-Sb-Au mineralization during Hercynian strike-slip deformation. [PDF]

, 2007
In the Saint-Aubin-des-Châteaux quarry (Armorican Hercynian belt, western France), an epigenetic hydrothermal alteration affects an oolitic ironstone layer intercalated within the Lower Ordovician Grès armoricain Formation.
Boulvais, Philippe, Branquet, Yannick, Chauvel, Jean-Jacques, Chiappero, P.J., Gloaguen, Eric, Marcoux, Eric, Moëlo, Y.   +6 more
core   +4 more sources

Cenozoic Volcanic Provinces and Shallow Asthenospheric Volumes in the Circum‐Mediterranean: Evidence From Magmatic Geochemistry, Seismic Tomography, and Integrated Geophysical‐Petrological Thermochemical Inversion

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 9, September 2024.
Abstract We compile an extensive catalog comprising geochemistry and ages of Cenozoic volcanic provinces in the Mediterranean region, distinguishing between three groups according to the geochemistry of magmatic rocks: intraplate (IVP), subduction‐related (SRVP), and mixed‐origin volcanic provinces (MVP; intraplate with subduction imprint). In order to
A. El‐Sharkawy, T. H. Hansteen, C. Clemente‐Gomez, J. Fullea, S. Lebedev, T. Meier   +5 more
wiley   +1 more source

The Silurian of Sardinia [PDF]

, 2009
The present volume “The Silurian of Sardinia” is composed of two related components. The first part comprises seven contributions introduced by an historical overview on the studies already carried out on the Silurian faunas of Sardinia.
C. CORRADINI, A. FERRETTI, P. STORCH, Corradini, Carlo, Ferretti, Annalisa, Storch, Peter   +3 more
core  

Lower Continental Crusts Involved in the Alpine Orogeny: New Insight from the Santa Lucia Nappe Metasediments (Corsica, France)

Acta Geologica Sinica - English Edition, Volume 98, Issue 4, Page 904-920, August 2024.
Abstract In the Alpine Corsica (France), the Santa Lucia Nappe represents a peculiar unit preserving the unique relicts of Paleozoic lower to medium continental crust. It consists of composite basement affected by Permian granulite facies metamorphic conditions unconformably covered by a Late Cretaceous clastic sequence (Tomboni Conglomerate and ...
Chiara FRASSI, Maria DI ROSA, Luca PANDOLFI, Michele MARRONI   +3 more
wiley   +1 more source

Assessing the Helium Potential of Variscan Batholiths: Insight From Corsica Island

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 7, July 2024.
Abstract Most of the current helium (He) reserves originate from fortuitous discoveries, mainly made during oil and gas exploration in sedimentary basins. As helium generation depends on U and Th α‐decay, old geological provinces gather key ingredients for high He accumulation. However, numerous He‐rich springs have also been documented in much younger
H. Dutoit, F. V. Donzé, C. Cardoso, J. Charroy, C. Riba Pereyra, A. Taillefer, C. Dusséaux, D. Tisserand, L. Monnier, S. Byrdina, R. Pik, L. Truche   +11 more
wiley   +1 more source

Permo-Carboniferous magmatism in the core of Pangaea (Southern Pyreness): a possible linkange between the Variscan and Cimmerian cycles? [PDF]

, 2013
In southern Europe and the western Mediterranean, Permo-Carboniferous magmatism is well represented in areas of Iberia, the Alps, Sardinia and the Balkan Peninsula. In Iberia, the magmatism that has been related to the Variscan orogeny is associated with
Castro, A., Chichorro, M., Diaz-Alvarado, J., Fernandez, C., Marti, J., Pereira, M Francisco, Rodriguez, C.   +6 more
core  

Chronostratigraphy and tectono‐sedimentary history of the Eastern South Pyrenean foreland basin (Ripoll Syncline, North‐East Spain)

The Depositional Record, Volume 10, Issue 3, Page 338-363, June 2024.
In this paper, we contribute to the tectono‐sedimentary evolution of the south Pyrenean foreland system by reviewing the chronostratigraphic framework of the basin infill in its eastern sector. Six sections are analysed and cross‐correlated to build a 6.5 km thick composite magnetostratigraphy that represents the complete record of the Cadí Nappe in ...
Philémon Juvany, Miguel Garcés, Miguel Lopez‐Blanco, Carles Martín Closas, Elisabet Beamud Amorós, Josep Tosquella, Susanna Emilia Bekkevold   +6 more
wiley   +1 more source

A journey of the continental crust to and from mantle depth: The P–T–t‐d path of Venaco unit, Alpine Corsica (France)

Geological Journal, Volume 59, Issue 2, Page 422-440, February 2024.
During the Alpine orogeny, the continental‐bearing Venaco Unit reached the baric peak at ≈ 33 km of depth, not before the Bartonian time. At 35.7 Ma (i.e., during the middle Priabonian), it was exhumed at shallower structural level (i.e., at ≈ 26 km of depth) mainly through the activation the top‐to‐W shear zones.
Maria Di Rosa, E. Sanità, C. Frassi, J. M. Lardeaux, M. Corsini, M. Marroni, L. Pandolfi   +6 more
wiley   +1 more source

The Relationships between the Internal Nappe Zone and the Regional Mylonitic Complex in the NE Variscan Sardinia (Italy): Insight from a New Possible Regional Interpretation?

Geosciences
This study presents an updated interpretation of geological data collected between 1984 and 2022. The area under consideration holds significant regional importance as it is located between the Internal Nappe Zone (INZ) and the Regional Mylonitic Complex
Franco Marco Elter, Federico Mantovani
doaj   +1 more source

Conodont content and stratigraphy of the Llessui Formation from the south central Pyrenees [PDF]

, 2002
A synthetic stratigraphic succession of the Upper Silurian Llessui Formation is established according to partial sections and conodont sampling. The lower part of the formation is considered Ludlow, while the uppermost Přídolí conodont O. e.
Gil Peña, Inmaculada, Rodríguez Cañero, Rosario, Sanz López, Javier   +2 more
core   +1 more source