scholarly journals Temporal, Isotopic and Spatial Relations of Early Paleozoic Gondwana-Margin Arc Magmatism, Central Transantarctic Mountains, Antarctica

2012 ◽  
Vol 53 (10) ◽  
pp. 2027-2065 ◽  
Author(s):  
John W. Goodge ◽  
C. Mark Fanning ◽  
Marc D. Norman ◽  
Vickie C. Bennett
Keyword(s):  
Spatial Relations ◽  
Arc Magmatism ◽  
Early Paleozoic ◽  
Gondwana Margin ◽  
Transantarctic Mountains

scholarly journals Early Paleozoic accretionary orogens along the Western Gondwana margin

2021 ◽  
Vol 12 (1) ◽  
pp. 109-130 ◽  
Author(s):  
Sebastián Oriolo ◽  
Bernhard Schulz ◽  
Silvana Geuna ◽  
Pablo D. González ◽  
Juan E. Otamendi ◽  
...  
Keyword(s):  
Early Paleozoic ◽  
Gondwana Margin

Late Cadomian rifting of the NW Gondwana margin and the reworking of Precambrian crust – evidence from bimodal magmatism in the early Paleozoic Moroccan Meseta

2020 ◽  
pp. 1-24
Author(s):  
Muhammad Ouabid ◽  
Carlos J. Garrido ◽  
Houssa Ouali ◽  
Jason Harvey ◽  
Károly Hidas ◽  
...  
Keyword(s):  
Early Paleozoic ◽  
Gondwana Margin ◽  
Nw Gondwana

Early Cambrian multiple-sourced plutonism in the Eastern Sierras Pampeanas, Córdoba, Argentina: Implications for the evolution of the early Paleozoic Gondwana margin

2021 ◽  
Vol 106 ◽  
pp. 103048
Author(s):  
Alina M. Tibaldi ◽  
Juan E. Otamendi ◽  
Alejandro H. Demichelis ◽  
Matías G. Barzola ◽  
Fernando Barra ◽  
...  
Keyword(s):  
Early Cambrian ◽  
Early Paleozoic ◽  
Sierras Pampeanas ◽  
Eastern Sierras Pampeanas ◽  
Gondwana Margin

Multiple early Paleozoic volcanic events at the northern Gondwana margin: U–Pb age evidence from the Southern Variscan branch (Sardinia, Italy)

2010 ◽  
Vol 17 (1) ◽  
pp. 44-58 ◽  
Author(s):  
Giacomo Oggiano ◽  
Laura Gaggero ◽  
Antonio Funedda ◽  
Laura Buzzi ◽  
Massimo Tiepolo
Keyword(s):  
Early Paleozoic ◽  
Volcanic Events ◽  
Gondwana Margin

Early Paleozoic arc magmatism and metamorphism in the northern Qilian Block, western China: Petrological and geochronological constraints

2017 ◽  
Vol 52 ◽  
pp. 339-364 ◽  
Author(s):  
Yin-Biao Peng ◽  
Sheng-Yao Yu ◽  
Jian-Xin Zhang ◽  
San-Zhong Li ◽  
Lai-Xi Tong ◽  
...  
Keyword(s):  
Western China ◽  
Arc Magmatism ◽  
Early Paleozoic ◽  
Geochronological Constraints

scholarly journals Prolonged Movement on a > 10‐km‐Wide Thrust During Early Paleozoic Orogens in the Gondwana Margin of NW Argentina

Tectonics ◽  
2019 ◽  
Vol 38 (8) ◽  
pp. 3210-3236 ◽  
Author(s):  
Ivan Semenov ◽  
Roberto F. Weinberg ◽  
Richard J. M. Taylor ◽  
Fred Jourdan
Keyword(s):  
Early Paleozoic ◽  
Gondwana Margin

scholarly journals Ordovician mafic magmatism in an Ediacaran arc complex, Sibak, northeastern Iran: the eastern tip of the Rheic Ocean

2018 ◽  
Vol 55 (10) ◽  
pp. 1173-1182 ◽  
Author(s):  
Fereshteh Ranjbar Moghadam ◽  
Fariborz Masoudi ◽  
Fernando Corfu ◽  
Seyed Massoud Homam
Keyword(s):  
Indirect Evidence ◽  
Arc Magmatism ◽  
Early Paleozoic ◽  
Northern Margin ◽  
Rheic Ocean ◽  
Late Precambrian ◽  
Sedimentary Sequences ◽  
Appalachian Orogen ◽  
Laurentian Margin ◽  
Clastic Sedimentary

The assembly of Gondwana in the Ediacaran was concluded by extensive arc magmatism along its northern margin. Extensional events in the early Paleozoic led to rifting and the eventual separation of terranes, which were later assimilated in different continents and orogens. The Sibak area of northeastern Iran records these events, including late Precambrian volcanic-sedimentary processes, metamorphism, and magmatism. A granite at Chahak in the Sibak Complex yields a zircon U–Pb age of 548.3 ± 1.1 Ma, whereas a spatially associated gabbro has an age of 471.1 ± 0.9 Ma. The latter corresponds to the earliest stages of rifting in the nearby Alborz domain, with the deposition of clastic sedimentary sequences, basaltic volcanism, and, as indicated by indirect evidence, coeval granitic plutonism. The Chahak gabbro is thus one of the earliest witnesses of the rifting processes that eventually led to the development of the Rheic Ocean and were indirectly linked to subduction of Iapetus at the Laurentian margin and the early development of the Appalachian orogen.

Reconstructing the pre-Variscan puzzle of Cambro-Ordovician basement rocks in the southwestern European margin of Gondwana

2020 ◽  
pp. SP503-2020-89 ◽  
Author(s):  
J. Javier Álvaro ◽  
Josep Maria Casas ◽  
Cecilio Quesada
Keyword(s):  
Late Ordovician ◽  
Early Paleozoic ◽  
Preliminary Step ◽  
External Zone ◽  
Eastern Pyrenees ◽  
Basement Rocks ◽  
Gondwana Margin ◽  
Montagne Noire ◽  
Sardic Phase ◽  
Early Late

AbstractA Cambro-Ordovician palaeogeographical restoration of the southwestern European margin of Gondwana is proposed based on the relative positions of Variscan tectonostratigraphic units. Four palaeogeographical proximal–distal transects are recognized and comprise: (i) the Cantabrian, West Asturian-Leonese, Central Iberian/Central Armorican and Ossa-Morena/North Armorican zones and domains of the Iberian and Armorican massifs, respectively; (ii) the South Armorican Domain and its lateral prolongation into the Thiviers-Payzac unit and the Occitan Domain, including the transect from the Axial, southern and northern Montagne Noire, and the Albigeois-southern Cévennes unit; (iii) the southern and northern sides of the Canigó Massif in the Eastern Pyrenees; and (iv) the External Zone and the External and Internal nappes of Sardinia. Two geodynamic scenarios are recognized controlled by the presence/absence of: (i) the Furongian–Early Ordovician (Toledanian or ‘lacaune normande’) break-up unconformity across the Ossa-Morena/North Armorican and Central Iberian/Central Armorican belts; (ii) the Early–Late Ordovician (Sardic) Phase across the Occitan and Pyrenean domains and SW Sardinia; and (iii) the migration of peaks in trilobite and cinctan (echinoderm) diversity. Other similar palaeogeographical shifts are recognized in zircon provenance patterns, the occurrence of climatically sensitive subtropical facies and mineral indicators across platform–basinal transects along the Gondwana margin. This multidisciplinary framework is proposed as a preliminary step in the quest to produce more tightly constrained Early Paleozoic reconstructions along southwestern Europe.

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