The 1420Ma Indiavaí Mafic Intrusion (SW Amazonian Craton): Paleomagnetic results and implications for the Columbia supercontinent

Paleo-position of the North China craton within the supercontinent Columbia: Constraints from new paleomagnetic results

“…Halls et al, 2000;Zhao et al, 2002aZhao et al, , 2003Zhao et al, , 2004Hou et al, 2008;Peng et al, 2005;Piper et al, 2011;Zhang et al, 2012a;Bispo-Santos et al, 2008D'Agrella-Filho et al, 2012;Chen et al, 2013). However, uncertainties and controversies still exist.…”

“…However, Chen et al (2013) placed the southwestern part of the NCC to eastern India. Recently obtained poles from Amazonia were used to place the NCC between Baltica and Amazonia (Bispo-Santos et al, 2008D'Agrella-Filho et al, 2012).…”

Widespread ca. 1.4 Ga intraplate magmatism and tectonics in a growing Amazonia

“…1) units, such as the Figueira Branca mafic -ultramafic complex that includes the Indiavaí gabbro and felsic-mafic plugs that occur in the Jauru-Indiavaí region (U -Pb ages of 1429^3 to 1416^7 Ma; Teixeira et al 2011;D'Agrella-Filho et al 2012). In a similar manner, the Nova Guarita intrusive suite geotectonically inserted in the Paleoproterozoic VentuariTapajós province (see Fig.…”

“…Notably, regional spatial and temporal correlations in the intraplate magmatism coupled with paleomagnetic evidence have provided constraints on the role of large igneous provinces (LIPs) during Proterozoic time, particularly related to Amazonia's potential relationships in supercontinent cycles such as the assembly and breakup of Columbia (or Nuna) and Rodinia (e.g. Rogers & Santosh 2002;Tohver et al 2006;BispoSantos et al 2008BispoSantos et al , 2012Li et al 2008;Cordani et al 2009;Elming et al 2009;D'Agrella-Filho et al 2012;Reis et al 2013;Roberts 2013;Teixeira et al 2014).…”

Geological and geochemical evolution of the Trincheira Complex, a Mesoproterozoic ophiolite in the southwestern Amazon craton, Brazil

“…Many alternative configurations have been proposed for the Paleoto Mesoproterozoic Columbia supercontinent, although its configuration is based on the available paleomagnetic data that are normally affected by large uncertainties, especially regarding paleolongitudes (Bispo-Santos et al, 2008;D'Agrella-Filho et al, 2012;Hou et al, 2008;Johansson, 2009;Kusky et al, 2007;Meert, 2002;Pesonen et al, 2003;Rogers and Santosh, 2002;Zhao et al, 2002Zhao et al, , 2004Zhao et al, , 2006. The possibility that this phase of Earth history involved assembly of a supercontinent was suggested by the abundance of orogenic activity between about 1.8 Ga and 1.6 Ga (Rogers and Santosh, 2004).…”