Results 1 to 10 of about 275,631 (233)

Reorganization of Northern Peri-Gondwanan Terranes at Cambrian–Ordovician Times: Insights from the Detrital Zircon Record of the Ossa-Morena Zone (SW Iberian Massif) [PDF]

Lithosphere, 2022
The Ossa-Morena Zone constitutes a fringe Gondwana-related terrane all along the Paleozoic. This continental block has been classically interpreted as being attached to a portion of the northern Gondwanan margin located close to the West African Craton ...
Cristina Accotto, Antonio Azor, David Martínez Poyatos, Antonio Pedrera, Francisco González Lodeiro   +4 more
doaj   +3 more sources

The pre-orogenic detrital zircon record of the Peri-Gondwanan crust [PDF]

Geological Magazine, 2018
We present a statistical approach to data mining and quantitatively evaluating detrital age spectra for sedimentary provenance analyses and palaeogeographic reconstructions.
Tobias Stephan, U. Kroner, R. Romer
semanticscholar   +5 more sources

Determining the mode of life of Ediacaran rangeomorphs in deep marine settings of Peri-Gondwanan Avalonia

Frontiers in Ecology and Evolution
As we continue to explore the early evolution of the Eumetazoa, important evidence is coming from the oldest Ediacaran biotas of Avalonia. Fundamental to understanding the ecology an evolution of the earliest soft-bodied complex animals is an ...
Duncan McIlroy
doaj   +3 more sources

Dynamics of Silurian Plants as Response to Climate Changes [PDF]

Life, 2021
The most ancient macroscopic plants fossils are Early Silurian cooksonioid sporophytes from the volcanic islands of the peri-Gondwanan palaeoregion (the Barrandian area, Prague Basin, Czech Republic).
Josef Pšenička, Jiří Bek, Jiří Frýda, Viktor Žárský, Monika Uhlířová, Petr Štorch   +5 more
doaj   +2 more sources

New peri-Gondwanan occurrences of the Ordovician genus Diamphidiocystis (Echinodermata, Stylophora): implications for mitrocystitid palaeobiogeography and diversity

Geological Society Special Publication, 2022
Anomalocystitid mitrates represent one of the most diverse and long ranging clade of stylophorans (Early Ordovician–Middle Devonian). Although they probably originated from a peri-Gondwanan stock of early mitrocystitids during the Floian, the fossil ...
B. Lefebvre, M. Nohejlová, L. Kašička, O. Zicha   +3 more
semanticscholar   +2 more sources

Opening and closure of Cadomian peri-Gondwanan oceans: age and evolution of the Mérida Ophiolite (SW Iberia)

Soviet Economy, 2022
In the SW Iberian Massif, the Ossa-Morena Complex contains a stack of units of different origin and tectonothermal evolution. Individual terranes of the complex record a Cadomian history, traditionally interpreted in relation to the dynamics of a peri ...
R. Arenas, E. Rojo‐Pérez, R. Díez Fernández, R. Albert, I. Novo‐Fernández, S. Sánchez Martínez, J. M. Fuenlabrada, P. Andonaegui, D. Moreno‐Martín, A. Gerdes, A. García‐Casco   +10 more
semanticscholar   +2 more sources

Palaeogeographic implications of a new iocrinid crinoid (Disparida) from the Ordovician (Darriwillian) of Morocco [PDF]

PeerJ, 2015
Complete, articulated crinoids from the Ordovician peri-Gondwanan margin are rare. Here, we describe a new species, Iocrinus africanus sp. nov., from the Darriwilian-age Taddrist Formation of Morocco.
Samuel Zamora, Imran A. Rahman, William I. Ausich   +2 more
doaj   +3 more sources

Peri-Gondwanan Acritarchs and Chitinozoans from the Lower–Middle Ordovician Lashkarak Formation in the Alborz Mountain Ranges, Northern Iran: Regional Stratigraphical Significance and Palaeogeographical Implications

Palynology, 2023
The Lashkarak Formation (Lower–Middle Ordovician) in the Gerdkuh locality, 10 km west of Damghan city, northern Iran, has been found to contain acritarchs and chitinozoans.
M. Ghavidel-syooki, Mohammad Hossein Piri-Kangarshahi   +1 more
semanticscholar   +2 more sources

The giant emucaridid Tafilocaris ordovicica gen. Et sp. Nov. (Euarthropoda, Nektaspida), a peri-Gondwanan ‘Cambrian’ survivor in the Upper Ordovician Tafilalt biota of Morocco

Gondwana Research
Emucaridids are small, non-biomineralised, nektaspid trilobitomorph arthropods so far only known for the Cambrian. Their bodies are made up of a cephalic shield, a small number of thoracic segments and an elongate pygidium, larger than the cephalon. Here
D. García‐Bellido, J. Gutiérrez-Marco   +1 more
semanticscholar   +2 more sources

Combined U-Pb ages and Lu-Hf systematics of detrital zircons from Early Cambrian Gondwanan siliciclastic rocks in S Turkey: Provenance and correlations with coeval successions in peri-Gondwanan terranes

Gondwana Research, 2022
© 2022 International Association for Gondwana ResearchDetrital U-Pb age peaks and εHf(t) and TDM(Hf) of peri-Gondwanan units of S Turkey indicate that they may have been derived from Neoproterozoic igneous suites in the Sinai Peninsula (Egypt), Israel ...
Semih Gürsu, S. Köksal, A. Möller, G. Kamenov, M. Cemal Göncüoğlu, K. Hefferan, P. Mueller, H. Kozlu   +7 more
semanticscholar   +2 more sources