Late Paleozoic Accretionary Complexes on the Gondwana Margin of Southern Chile: Evidence from The Chonos Archipelago

2013 ◽  
pp. 221-227 ◽  
Author(s):  
John Davidson ◽  
Constantino Mpodozis ◽  
Estanislao Godoy ◽  
Francisco Hervé ◽  
Robert Pankhurst ◽  
...  
Keyword(s):  
Late Paleozoic ◽  
Southern Chile ◽  
Gondwana Margin

Late Paleozoic foraminifera from southern Chile

10.3133/pp858 ◽  
1976 ◽  
Author(s):  
Raymond Charles Douglass ◽  
Merlynd Keith Nestell
Keyword(s):  
Late Paleozoic ◽  
Southern Chile

LATE PALEOZOIC REGIONAL PALEOCLIMATE OF THE PROTOPRECORDILLERAN GONDWANA MARGIN: A CASE STUDY IN THE PAGANZO BASIN

2018 ◽  
Author(s):  
Kathryn N. Pauls ◽  
◽  
John L. Isbell ◽  
Levi D. Moxness ◽  
C. Oscar Limarino ◽  
...  
Keyword(s):  
Late Paleozoic ◽  
Gondwana Margin ◽  
Paganzo Basin

Late Paleozoic to Jurassic silicic magmatism at the Gondwana margin: Analogy to the Middle Proterozoic in North America?

Geology ◽  
1989 ◽  
Vol 17 (4) ◽  
pp. 324 ◽  
Author(s):  
Suzanne Mahlburg Kay ◽  
Victor A. Ramos ◽  
Constantino Mpodozis ◽  
Patricia Sruoga
Keyword(s):  
North America ◽  
Late Paleozoic ◽  
Gondwana Margin ◽  
Silicic Magmatism ◽  
Middle Proterozoic

scholarly journals Late Paleozoic Subduction and Accretion in Southern Chile

Episodes ◽  
1988 ◽  
Vol 11 (3) ◽  
pp. 183-188 ◽  
Author(s):  
Francisco Hervé
Keyword(s):  
Late Paleozoic ◽  
Southern Chile

scholarly journals Late Paleozoic geodynamic evolution of the western North Patagonian Massif and its tectonic context along the southwestern Gondwana margin

Lithos ◽  
2020 ◽  
Vol 376-377 ◽  
pp. 105801 ◽  
Author(s):  
Paulo Marcos ◽  
Cecilia Pavón Pivetta ◽  
Leonardo Benedini ◽  
Daniel Gregori ◽  
Mauro Geraldes ◽  
...  
Keyword(s):  
Late Paleozoic ◽  
Geodynamic Evolution ◽  
Gondwana Margin

Petrogenesis of the southern Qiangtang mafic dykes, Tibet: Link to a late Paleozoic mantle plume on the northern margin of Gondwana?

2019 ◽  
Vol 131 (11-12) ◽  
pp. 1907-1919 ◽  
Author(s):  
Ming Wang ◽  
Cai Li ◽  
Xiao-Wen Zeng ◽  
Hang Li ◽  
Jian-Jun Fan ◽  
...  
Keyword(s):  
Partial Melting ◽  
Mantle Plume ◽  
Inductively Coupled Plasma ◽  
Crustal Contamination ◽  
Late Paleozoic ◽  
Magmatic Zircon ◽  
Early Permian ◽  
Northern Margin ◽  
Inductively Coupled ◽  
Gondwana Margin

AbstractThis study presents 13 new U-Pb zircon ages obtained by laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) together with whole-rock geochemical, Sr-Nd isotopic and zircon Hf isotopic data for a mafic dike swarm in the southern Qiangtang area of Tibet. These data provide the basis for a new model of the late Paleozoic evolution of the Tethys. Combined with the results of previous zircon U-Pb dating, the magmatic zircon grains extracted from mafic dikes yield latest Carboniferous to Early Permian ages (317–279 Ma). The geochemistry of the southern Qiangtang mafic rocks indicates the presence of low-Ti (QLT) and high-Ti (QHT) suites. The magmas that formed the QLT suite underwent higher degrees of partial melting (>5%) and display evidence of crustal contamination, whereas the QHT suite was derived from magmas generated by low-degree (1%–5%) partial melting of a garnet-bearing mantle source, with a greater extent of fractional crystallization than the QLT suite, and no evidence of crustal contamination. We propose that the QHT and QLT suites may have been derived from magmas from different parts of a single mantle plume. The formation of the southern Qiangtang mafic dikes (latest Carboniferous to Early Permian; 317–279 Ma) may have been related to the northward drift of the Cimmerian continent from the northern Gondwana margin, which resulted in the opening of the Meso-Tethys Ocean.

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