Results 51 to 60 of about 1,123 (149)

Abstract

open access: yes, 2022
Research and Practice in Thrombosis and Haemostasis, Volume 6, Issue S1, October 2022.
wiley   +1 more source

Stratigraphic succession, facies and depositional environment of Emsian reefal carbonates in the Ossa-Morena Zone (SW Spain) [PDF]

open access: yesNeues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 2010
The Devonian succession between the Guadiana and Guadalquivir valleys in the ObejoValsequillo Domain comprises more than 600 m of shale and sandstone with some interbedded limestone and marl. The most complete reefal sequences of the region are exposed in the Guadámez-2 section, which is located on the western bank of the Guadámez River, near Zalamea ...
Rodríguez García, Sergio   +6 more
openaire   +3 more sources

Carbonate production and reef building under ferruginous seawater conditions in the Cambrian rift branches of the Avalon Zone, Newfoundland

open access: yesSedimentology, Volume 71, Issue 4, Page 1245-1269, June 2024.
Abstract The characterization of carbonate production on rift basins is critical for understanding the nucleation and demise of reefs in tectonically active areas. A new petrographic and mineralogical analysis of Cambrian strata from the Avalon Zone in Newfoundland, based on scanning electron microscopy – back‐scattered electron detector and Raman ...
José Javier Álvaro, Andrea Mills
wiley   +1 more source

A genetic link between albitic magmas and IOCG mineralization in the Ossa Morena Zone (SW Iberia)

open access: yes, 2021
A detailed geological and isotopic study of the Colmenar deposit (Ossa Morena Zone, SW Iberia) shows that the magnetite- rich mineralization formed by complex magmatic-hydrothermal processes related to the crystallization of water-rich albite- magnetite ...
Carriedo, Jorge   +3 more
core   +1 more source

Abstract Book for the 27th Congress of the European Hematology Association

open access: yes, 2022
HemaSphere, Volume 6, Issue S3, Page 1-4130, June 2022.
wiley   +1 more source

New U-Pb SHRIMP zircon ages for pre-variscan orthogneisses from Portugal and their bearing on the evolution of the Ossa-Morena tectonic zone

open access: yesAnais da Academia Brasileira de Ciências, 2006
New SHRIMP U-Pb zircon ages for the Portalegre and Alcáçovas orthogneisses document a complex pre- Variscan history for the Iberian basement in Portugal. The available geochemical and geochronological data for the Alcáçovas orthogneiss (ca.
Cordani Umberto G.   +6 more
doaj  

Variscan ophiolite belts in the Ossa-Morena Zone (Southwest Iberia): Geological characterization and geodynamic significance [PDF]

open access: yesGondwana Research, 2010
Abstract The boundary between the Iberian and South-Portuguese terranes in SW Iberia is traced by a suture recording the closure of Rheic and related oceans through NNE-directed subduction. The western segment of the suture comprises imbrications of the Iberian Terrane Relative Autochthon (Neoproterozoic – Lower Palaeozoic) and Allochthonous ...
Ribeiro, A.   +8 more
openaire   +2 more sources

Unterdevonischen Trilobiten und Ostracoden aus dem Ossa-Morena-zone (Spanien)

open access: yes, 1991
Les Trilobites et Ostracodes provenant de trois unités paléozoïques de la Zone d’Ossa-Morena (Sud de l’Espagne) apportent des précisions sur la stratigraphie du Dévonien inférieur (Praguien-Emsien inférieur) de cette région.
Groos-Uffenorde, Helga   +3 more
core   +1 more source

The geodynamic significance of shoshonitic plutonism at the Ossa-Morena Zone, Portugal

open access: yes, 2018
In this meeting we will start by addressing the “K problem” as stated by Germaine A. Joplin (1968). Since then the meaning and classification of high-K rocks and in particularly of shoshonites, have been a matter of debate. Recently, there has been a growing interest in the occurrence of post-collisional high-k granitoids with mafic enclaves in the ...
openaire   +2 more sources

Ranked Mappable Criteria for Magmatic Units: Systematization of the Ossa-Morena Zone Rift-Related Alkaline Bodies

open access: yes
The Ossa-Morena Zone (SW Iberian Massif) hosts the largest set of Cambro–Ordovician alkaline magmatic plutons related to the Palaeozoic rifting of the northern Gondwana margin so far described. An organized framework for their classification at different
Nogueira, Pedro   +12 more
core   +1 more source

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