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

Goodge, John W.; Fanning, C. Mark; Norman, Marc D.; Bennett, Vickie C.

doi:10.1093/petrology/egs043

Cited by 77 publications

(154 citation statements)

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“…270 Ma, and since this sample was analyzed in the higher precision 5 scan mode per grain, it is possible to calculate a weighted mean 206 Pb/ 238 U age of 268.9 ± 1.4 Ma (MSWD = 0.38, for 38 of 70 grains analyzed). There is a small group of grains between 480 and 520 Ma, similar in age to post-tectonic magmatic rocks in the Ross Orogen of the Transantarctic Mountains (Goodge et al, 2012); three late Mesoproterozoic (Grenvillian) grains are also present.…”

Section: Resultsmentioning

confidence: 88%

The Gondwana Plate margin in the Weddell Sea sector: Zircon geochronology of Upper Paleozoic (mainly Permian) strata from the Ellsworth Mountains and eastern Ellsworth Land, Antarctica

Elliot

Laudon

2016

Gondwana Research

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Section: Resultsmentioning

confidence: 88%

The Gondwana Plate margin in the Weddell Sea sector: Zircon geochronology of Upper Paleozoic (mainly Permian) strata from the Ellsworth Mountains and eastern Ellsworth Land, Antarctica

Elliot

Laudon

2016

Gondwana Research

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“…Alkaline magmatism continued into the early Cambrian (~530 Ma) in southern Victoria Land (Rowell et al, 1993;Cooper et al, 1997;Read et al, 2002;Mellish et al, 2002;Cottle and Cooper, 2006a), intruding deformed metasedimentary rocks. Calc-alkaline magmatism was prevalent between~530 and 480 Ma (Encarnación and Grunow, 1996;Allibone and Wysocazanski, 2002;Vogel et al, 2002;Paulsen et al, 2013), but may potentially have locally initiated as early as 545 Ma (Cottle and Cooper, 2006b;Stump et al, 2006;Goodge et al, 2012). Widespread emplacement of largely undeformed granites occurred after~500 Ma (Borg et al, 1990;Stump, 1995;Encarnación and Grunow, 1996;Allibone and Wysocazanski, 2002).…”

Section: Geology Of the Queen Maud Mountainsmentioning

confidence: 99%

“…,Mellish et al (2002),Myrow et al (2002),Read et al (2002),Vogel et al (2002);Goodge et al (2002),Curtis et al (2004),Goodge et al (2004a,b),Paulsen et al (2004),Stump et al (2004),Wysoczanski and Allibone (2004),Cottle and Cooper (2006a,b),Stump et al (2006Stump et al ( , 2007,Talarico et al (2007),Paulsen et al (2008),Cooper et al (2010),Goodge et al (2012), andPaulsen et al (2013).…”

mentioning

confidence: 99%

Detrital mineral ages from the Ross Supergroup, Antarctica: Implications for the Queen Maud terrane and outboard sediment provenance on the Gondwana margin

et al. 2015

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“…A compilation of ages for Ross magmatism in the central Transantarctic Mountains made by Goodge et al (2012) shows a wide range of ages (Fig. 12) among which the oldest are for foliated bodies at c. 550 Ma (in one case 589 ± 5 Ma), and a single pegmatite dated at 524 ± 5 Ma.…”

Section: Correlation Of Early Palaeozoic Magmatismmentioning

confidence: 99%

The Gondwana connections of northern Patagonia

Pankhurst

Rapela

Luchi

et al. 2014

JGS

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A multidisciplinary study (U-Pb SHRIMP geochronology, Hf and O isotopes in zircon, Sr and Nd isotopes in whole-rocks, as well as major and trace element geochemistry) has been carried out on granitoid samples from the area west of Valcheta, North Patagonian Massif, Argentina. These confirm the Cambrian age of the Tardugno Granodiorite (528 ± 4 Ma) and the Late Permian age of granites in the central part of the Yaminué complex (250 Ma). Together with petrological and structural information for the area, we consider a previously suggested idea that the Cambrian and Ordovician granites of northeastern Patagonia represent continuation of the Pampean and Famatinian orogenic belts of the Sierras Pampeanas, respectively. Our interpretation does not support the hypothesis that Patagonia was accreted in Late Palaeozoic times as a far-travelled terrane, originating in the Central Transantarctic Mountains, and the arguments for and against this idea are reviewed. A parautochthonous origin is preferred with no major ocean closure between the North Patagonian Massif and the Sierra de la Ventana fold belt.Supplementary material: [U-Pb SHRIMP Analytical Data, Geochemical Analyses and Sample GPS locations] is available at ww.geolsoc.org.uk/SUP00000 3 The hypothesis that Patagonia originated as a far-travelled terrane that became accreted to the rest of South America in Late Palaeozoic times (Ramos 1984) has proved remarkably resilient. It proposes collision of a Patagonian terrane with the rest of South America along a hypothetical suture now buried beneath the Río Colorado basin (Fig. 1), causing NEvergent deformation in the Palaeozoic sedimentary succession of the Sierra de la Ventana (Sierras Australes) and SW-vergent thrusting in northern Patagonia (von Gosen 2003 and references therein). Nevertheless, despite years of further investigation, relevant evidence is still scarce and sometimes inconclusive. Whereas some geophysical surveys have been claimed to show a major crustal discontinuity along the proposed suture zone (e.g., Chernicoff & Zappettini 2004), others have emphasized the complexity of the underlying block structure and the importance of east-west displacements, but do not indicate an overall difference in gravimetric signature across the boundary (Kostadinoff et al. 2005;Gregori et al. 2008). Palaeomagnetic data permit, but do not require, a small separation of the landmasses on either side in Devonian times (Rapalini 2005). Other authors have argued that Patagonia was an autochthonous part of South America (e.g., Varela et al. 1991; Dalla Salda et al. 1992). Rapela & Pankhurst (2002) and Pankhurst et al. (2003) supported the idea that the Early Palaeozoic Pampean and Famatinian magmatic belts of the Sierras Pampeanas might be traced continuously into the basement of the Sierra de la Ventana and northeastern Patagonia, respectively. Pankhurst et al. (2006) emphasized the idea that the North Patagonian Massif at least was an autochthonous part of South America, with a Carboniferous collision zone farth...

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

Cited by 77 publications

References 71 publications

The Gondwana Plate margin in the Weddell Sea sector: Zircon geochronology of Upper Paleozoic (mainly Permian) strata from the Ellsworth Mountains and eastern Ellsworth Land, Antarctica

The Gondwana Plate margin in the Weddell Sea sector: Zircon geochronology of Upper Paleozoic (mainly Permian) strata from the Ellsworth Mountains and eastern Ellsworth Land, Antarctica

Detrital mineral ages from the Ross Supergroup, Antarctica: Implications for the Queen Maud terrane and outboard sediment provenance on the Gondwana margin

The Gondwana connections of northern Patagonia

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