The Parand-Etendeka Continental Flood Basalt Province: A historical perspective of current knowledge and future research trends

Author(s)

Canon-Tapia, Edgardo

• Document type: Journal article
• Source: JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH; v. 355, p. 17-pg., 2018-04-15.

Abstract

The development of ideas concerning Continental Flood Basalt Provinces is not new, and many studies were completed on specific provinces before the advent of plate tectonics. The Parana-Etendeka Province is not an exception, and actually is an example of a province that has been thoroughly studied for >100 years. In this work, I present a brief summary of various aspects of this province from a rather general point of view, including many references of difficult access to a reader not versed on the Portuguese language. Key features include the presence of alkaline volcanism along the edges of the main basin, before and after a markedly tholeiitic event, the uneven spatial distribution of eruptive products relative to the location of continental rupture, the apparent lack of a pattern of temporal activity across the whole province and the close relationship between the structure of the underlying sedimentary basin and the distribution of volcanic rocks. By bringing together information relevant to all of those key features, an evolutionary model emphasizing the role played by the changing local structure is outlined. This model is an example of how key observations (many of which were overlooked for >50 years) provide the required impetus for the completion of future research that has the potential to substantially change the form in which this province has been visualized for at least the past 30 years. (C) 2017 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 14/12476-2 - The Paraná magmatic Province-Etendeka in Brazil: petrological and temporal relations between the tholeiitic and alkaline magmatism and its geodynamic implications
• Grantee: Maria Irene Bartolomeu Raposo
• Support Opportunities: Research Grants - Visiting Researcher Grant - International
• FAPESP's process: 12/06082-6 - The Paraná-Etendeka magmatic province in Brazil: temporal and petrologic relationships between the tholeiitic and alkaline magmatism and geodynamic implications
• Grantee: Excelso Ruberti
• Support Opportunities: Research Projects - Thematic Grants