New late Proterozoic paleomagnetic pole for the Rio de la Plata craton: Implications for Gondwana

Rapalini, Augusto E.

doi:10.1016/j.precamres.2006.01.016

Cited by 43 publications

(26 citation statements)

References 32 publications

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“…3a) has been correlated with the Tandilia belt in Argentina, jointly defining a Tandilia terrane according to Bossi et al (2005). This is consistent with palaeomagnetic studies suggesting that both sectors were part of a single continental block at 550 Ma (Rapalini, 2005(Rapalini, , 2006. The Piedra Alta terrane in Uruguay is composed of magmatic rocks of various compositions that show a range of U-Pb ages between 2.…”

Section: Geochronology Of the Rio De La Plata Cratonsupporting

confidence: 88%

The Río de la Plata craton and the assembly of SW Gondwana

Rapela

Pankhurst

Casquet

et al. 2007

Earth-Science Reviews

385

357

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provenance, and derivation from the Rio de la Plata craton is highly unlikely. considerations, previously zircon data, palaeocurrent and structural data, suggest that these rocks must have had an origin within Gondwana-forming blocks, for which the closest ide ntifiable somces are 'Brazilian' and 'African' (Namaqua Natal). Consequently, the model for the orogeny is that the Rio de la which was at the time attached to the large Amazonia craton and other smaller continental blocks, such as Arequipa Antofalla and Rio Protracted relative displacement of the RPC after the Orogeny 1ed to its fina1 !-'U.>lU'UH.

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Section: Geochronology Of the Rio De La Plata Cratonsupporting

confidence: 88%

The Río de la Plata craton and the assembly of SW Gondwana

Rapela

Pankhurst

Casquet

et al. 2007

Earth-Science Reviews

385

357

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“…The new poles broadly confirm the shape of the APWP for this block (Rapalini, 2006;Rapalini et al, 2013), although the ages are modified. The SAn pole is assigned an age of 578 ± 4 Ma, slightly displaced from the original SA2 pole, becoming more (Besse andCourtillot, 2002, Torsvik et al, 2008) suggesting that a remagnetization in the last 320…”

supporting

confidence: 57%

The late Neoproterozoic Sierra de las Ánimas Magmatic Complex and Playa Hermosa Formation, southern Uruguay, revisited: Paleogeographic implications of new paleomagnetic and precise geochronologic data

Rapalini

Tohver

Bettucci

et al. 2015

Precambrian Research

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“…We have generally followed the tectonic model of Ramos (1988) for the Rio de la Plata and Pampean blocks, keeping them in the vicinity of Laurentia, and the model of Pimentel et al (1999) for Paraná -São Francisco collision. Recent palaeomagnetic data (Sánchez-Bettucci & Rapalini 2002;Rapalini 2006) suggest that Rio de la Plata was part of Gondwana by 550 Ma. These data together with other publications (e.g., Rapela et al 2008) may indicate that our approach to a position and role of Rio de la Plata could be an oversimplification and more sophisticated model for this part of the palaeo-globe should be considered in the future, as was previously suggested by Omarini et al 1999).…”

Section: Assembly Of Gondwanamentioning

confidence: 99%

Late Neoproterozoic and Early Cambrian palaeogeography: models and problems

et al. 2008

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We present two alternative sets of global palaeogeographical reconstructions for the time interval 615-530 Ma using competing high and low-latitude palaeomagnetic data subsets for Laurentia in conjunction with geological data. Both models demonstrate a genetic relationship between the collisional events associated with the assembly of Gondwana and the extensional events related to the opening of the Tornquist Sea, the eastern Iapetus Ocean (600-550 Ma), and the western Iapetus Ocean (after 550 Ma), forming a three-arm rift between Laurentia, Baltica, and Gondwana. The extensional events are probably plume-related, which is indicated in the reconstructions by voluminous mafic magmatism along the margins of palaeo-continents. The low-latitude model requires a single plume event, whereas the high-latitude model needs at least three discrete plumes. Coeval collisions of large continental masses during the assembly of Gondwana, as well as slab pull from subduction zones associated with those collisions, could have caused upper plate extension resulting in the rifted arm that developed into the eastern Iapetus Ocean and Tornquist Sea but retarded development of the western Iapetus Ocean. As a result, the eastern Iapetus Ocean and the Tornquist Sea opened before the western Iapetus Ocean.

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New late Proterozoic paleomagnetic pole for the Rio de la Plata craton: Implications for Gondwana

Cited by 43 publications

References 32 publications

The Río de la Plata craton and the assembly of SW Gondwana

The Río de la Plata craton and the assembly of SW Gondwana

The late Neoproterozoic Sierra de las Ánimas Magmatic Complex and Playa Hermosa Formation, southern Uruguay, revisited: Paleogeographic implications of new paleomagnetic and precise geochronologic data

Late Neoproterozoic and Early Cambrian palaeogeography: models and problems

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