2003
DOI: 10.1016/s0012-8252(02)00163-0
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Source mantle heterogeneity and its role in the genesis of Late Archaean–Proterozoic (2.7–1.0 Ga) and Mesozoic (200 and 130 Ma) tholeiitic magmatism in the South American Platform

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Cited by 40 publications
(26 citation statements)
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“…Both the Late Archean-Proterozoic and Mesozoic tholeiites from the South American Platform (SAP) are characterized by high-and low-Ti (TiO 2 > 2 and < 2 wt%, respectively) and by high and low contents of incompatible elements, respectively (Piccirillo and Melfi, 1988;Iacumin et al, 2003). According to these authors, the Precambrian and Mesozoic SAP tholeiites reflect heterogeneous mantle sources, including EMI (e.g., fluids, small volumes of melts) and EMII (e.g., ancient subduction-related metasomatism) components, and the existence of heterogeneity in the mantle source of SAP since at least the Late Archean.…”
Section: A C C E P T E D Accepted Manuscriptmentioning
confidence: 99%
“…Both the Late Archean-Proterozoic and Mesozoic tholeiites from the South American Platform (SAP) are characterized by high-and low-Ti (TiO 2 > 2 and < 2 wt%, respectively) and by high and low contents of incompatible elements, respectively (Piccirillo and Melfi, 1988;Iacumin et al, 2003). According to these authors, the Precambrian and Mesozoic SAP tholeiites reflect heterogeneous mantle sources, including EMI (e.g., fluids, small volumes of melts) and EMII (e.g., ancient subduction-related metasomatism) components, and the existence of heterogeneity in the mantle source of SAP since at least the Late Archean.…”
Section: A C C E P T E D Accepted Manuscriptmentioning
confidence: 99%
“…Além disso, têm influência sobre a evolução geológica dos continentes e são evidências das diversas recorrências tectônicas e tentativas de aberturas oceânicas, nem sempre bem sucedidas, seguidas de fases orogenéticas responsáveis pela colagem final dos segmentos de crosta continental Mazzucchelli et al, 1995;Corrêa Gomes et al, 1996;Mazzucchelli et al, 2000;Menezes Leal et al, 2000;Iacumin et al, 2001Iacumin et al, , 2003.…”
Section: Introductionunclassified
“…Na Plataforma Sul-Americana tais pesquisas, principalmente as voltadas para o estudo de diques e intrusivas básicas Meso e Paleoproterozoicos têm propiciado a elaboração de vários trabalhos nas diversas regiões cratônicas existentes, ou seja, no Craton do São Francisco (Bellieni et al, 1991(Bellieni et al, , 1998Bastos Leal et al, 1994;Pinese, 1997;Moraes Brito et al, 1989;Mazzucchelli et al, 2001;D'Agrella et al, 2004;Corrêa da Costa et al, 2006); no Bloco Arqueano Crixás -Goiás (Corrêa da Costa e Girardi, 2004Corrêa da Costa et al, 2006a); no Craton do Rio de La Plata (Bossi et al, 1993;Mazzucchelli et al, 1995;Girardi et al, 1996;Teixeira et al, 1999) e no Craton Amazônico (Rivalenti et al, 1998;Menezes Leal et al, 2006;Teixeira et al, 2006;Girardi et al, 2008). Os trabalhos citados constituem exemplos de estudos de enxames individuais, porém trabalhos tentando estudar comparativamente tais intrusões, visando principalmente comparar fontes mantélicas e implicações tectônicas também têm sido realizados (Iacumin et al, 2001(Iacumin et al, , 2003Girardi, 2006). O enxame de diques de Nova Lacerda e Conquista D'Oeste -MT foram objetos de alguns poucos trabalhos em simpósios e congressos (e.g., Corrêa da Ruiz et al, 2005), que constituem informações pioneiras sobre esses corpos na região SW do Craton Amazônico no Estado do Mato Grosso.…”
Section: Introductionunclassified