Results 21 to 30 of about 171 (156)

A ~565 Ma old glaciation in the Ediacaran of peri-Gondwanan West Africa

International Journal of Earth Sciences, 2017
Department of Chemistry and Biotechnology, Swinburne University of Technology ...
Linnemann, Ulf, Pidal, Agustin Pieren, Hofmann, Mandy, Drost, Kerstin, Quesada, Cecilio, Gerdes, Axel, Marko, Linda, Gartner, Andreas, Zieger, Johannes, Ulrich, Jens, Krause, Rita, Vickers-Rich, Patricia, Horak, Jana   +12 more
openaire   +3 more sources

Unraveling the origins and P-T-t evolution of the allochthonous Sobrado unit (Órdenes Complex, NW Spain) using combined U–Pb titanite, monazite and zircon geochronology and rare-earth element (REE) geochemistry [PDF]

Solid Earth, 2020
The Sobrado unit, within the upper part of the Órdenes Complex (NW Spain) represents an allochthonous tectonic slice of exhumed high-grade metamorphic rocks formed during a complex sequence of orogenic processes in the middle to lower crust.
J. M. Benítez-Pérez, J. M. Benítez-Pérez, P. Castiñeiras, J. Gómez-Barreiro, J. R. Martínez Catalán, A. Kylander-Clark, R. Holdsworth   +6 more
doaj   +1 more source

Deciphering the metamorphic evolution of the Pulo do Lobo metasedimentary domain (SW Iberian Variscides) [PDF]

Solid Earth, 2020
The Pulo do Lobo domain is one of the units exposed within the orogenic suture zone between the Ossa-Morena and the South Portuguese zones in the SW Iberian Variscides.
I. Pérez-Cáceres, I. Pérez-Cáceres, D. J. Martínez Poyatos, O. Vidal, O. Beyssac, F. Nieto, J. F. Simancas, A. Azor, F. Bourdelle   +8 more
doaj   +1 more source

Detrital zircon similarities and dissimilarities between the Iberian Pyrite Belt, Ossa-Morena Zone and Meguma

Geologica Acta, 2023
Despite the so-called exotic nature of the South Portuguese Zone relatively to the other major domains of the Iberian Massif of peri-Gondwanan affinity, Devonian detrital rocks of the oldest strata in the Iberian Pyrite Belt have a remarkable ...
João Lains Amaral, Ana Rita Solà, Telmo Bento dos Santos, Martim Chichorro   +3 more
doaj  

Ostracod Response to a Major Middle Jurassic Sea-Level Fall: A Case Study from Southern Tunisia (North Gondwana) with Implications on Regional Stratigraphy and Palaeoenvironmental Reconstruction

Geosciences, 2022
Marginal-marine to non-marine ostracod assemblages from the Bajocian (Mid-Jurassic) of southern Tunisia, precisely from the Krachoua Formation at the Kef El Anneba section near the Beni Kheddache area, are here described and tested for their utility to ...
Khaled Trabelsi, Lassad Tiss, Benjamin Sames, Yassine Houla, Amine Hanini, Faycel Elferhi, Ahmed Skanji, Fekri Kamoun, Mohamed Faouzi Zagrarni, Michael Wagreich   +9 more
doaj   +1 more source

Diachronous Paleozoic accretion of peri-Gondwanan terranes at the Laurentian margin

Geological Society, London, Special Publications, 2018
Abstract In the original Wilson cycle, the northern Appalachian–Caledonide orogen resulted from the collision of two continental masses separated by a single ocean. One of these corresponds to the modern concept of Laurentia, but the colliding continent to the east has been variously subdivided into many smaller terranes and domains ...
John W. F. Waldron, David I. Schofield, J. Brendan Murphy   +2 more
openaire   +2 more sources

The eoorthid brachiopod Apheoorthina in the Lower Ordovician of NW Argentina and the dispersal pathways along western Gondwana [PDF]

Acta Palaeontologica Polonica, 2016
The eoorthid brachiopod Apheoorthina is reported for the first time from the Lower Ordovician of NW Argentina. It is represented by a species similar to A.
Diego F. Muñoz , Juan L. Benedetto
doaj   +1 more source

Cadomian/Pan-African consolidation of the Iberian Massif assessed by its detrital and inherited zircon populations: is the ~610Ma age peak a persistent Cadomian magmatic inheritance or the key to unravel its Pan-African basement?

Geologica Acta, 2023
This work assessed the age distribution of Cadomian/Pan-African orogenic events (550-590 and 605-790Ma, respectively) in several zones of Iberian Massif by means of detrital and inherited zircon analysis compilation.
Martim Chichorro, Ana Rita Solà, Telmo Bento dos Santos, João Lains Amaral, Lourenço Crispim   +4 more
doaj  

Cadomian metabasites of the Eastern Pyrenees revisited

Geologica Acta, 2023
This study presents a new geochemical, petrological, and geochronological U-Pb dataset from Ediacaran metabasites and associated rocks of the Canigó and Cap de Creus massifs, Eastern Pyrenees. Metabasites are composed of calcic amphibole + plagioclase +
Núria Pujol-Solà, Josep Maria Casas, Joaquín A. Proenza, Idael F. Blanco-Quintero, Elena Druguet, Montserrat Liesa, Manuel J. Román-Alpiste, J. Javier Álvaro   +7 more
doaj  

The Schwarzhorn Amphibolite (Eastern Rätikon, Austria): an Early Cambrian intrusion in the Lower Austroalpine basement

Geologica Carpathica, 2016
The Alpine nappe stack in the Penninic-Austroalpine boundary zone in the Rätikon (Austria) contains a 4×1 km tectonic sliver of meta-diorite, known as the Schwarzhorn Amphibolite.
Nilius Nils-Peter, Froitzheim Nikolaus, Nagel Thorsten Joachim, Tomaschek Frank, Heuser Alexander   +4 more
doaj   +1 more source