Large Igneous Provinces and their Plumbing Systems

Identification of large-volume, short-duration mafic magmatic events of intraplate affinity in both continental and oceanic settings on the Earth and other planets provides invaluable clues for understanding several vital geological issues of current concern. Of particular importance is understanding the assembly and dispersal of supercontinents through Earth's history, dramatic climate change events including mass extinctions, and processes that have produced a wide range of large igneous province (LIP)-related resources, such as Ni–Cu–PGE, Au, U, base metals and petroleum. This volume comprises 21 contributions on the latest developments and new information on LIPs and their plumbing systems and presents methodical studies on different components of LIP plumbing systems. These articles are especially helpful in understanding continental break-up events, regional domal uplift and a variety of metallogenic systems, as well as the temporal and spatial distribution of LIPs, their origin and their likely links to mantle plumes/superplumes.
Large igneous provinces of the Amazonian Craton and their metallogenic potential in Proterozoic times
Correspondence: nelson.reis@cprm.gov.br
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Published:March 09, 2022
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CiteCitation
Nelson Joaquim Reis, W. Teixeira, M. S. D'Agrella-Filho, J. S. Bettencourt, R. E. Ernst, L. E. A. Goulart, 2022. "Large igneous provinces of the Amazonian Craton and their metallogenic potential in Proterozoic times", Large Igneous Provinces and their Plumbing Systems, Rajesh K. Srivastava, Richard E. Ernst, Kenneth L. Buchan, Michiel de Kock
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Abstract
This paper overviews the Proterozoic large igneous provinces (LIPs) of the Amazonian Craton, characterized by large volumes of extrusive and intrusive magmatic rocks. We reassess the geologic, geochronological and geochemical information to stablish three intracontinental felsic volcanic–plutonic igneous belts (i.e. SLIPs), namely: Orocaima (1.98–1.96 Ga), Uatumã (1.88–1.87 Ga) and Alta Floresta (1.80–1.79 Ga). The Avanavero LIP (1.79–1.78 Ga), as well as the Rincón del Tigre-Huanchaca LIP (1.11 Ga) are also revisited. The relationships of these events to intraplate settings through time and space are apparent. We examine the main characteristics of each magmatic event in light of the U–Pb zircon and baddeleyite ages and coupled isotopic–geochemical constraints, the geodynamic significance and metallogenetic potential. The Uatumã and Alta Floresta SLIPs host the most important mineral resources within the Amazonian Craton. Global barcode matches of the Proterozoic SLIP/LIP events of Amazonia are also addressed, as well as their possible links with geological timescale periods: the Orosirian, Statherian and Stenian boundaries. We also evaluate the available palaeomagnetic data to address issues related to the barcode match of such SLIP/LIP events in the context of supercontinent cycles.