Meso-Cenozoic Brazilian Offshore Magmatism

Meso-Cenozoic Brazilian Offshore Magmatism

Geochemistry, Petrology, and Tectonics

1st Edition - December 3, 2021

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  • Editors: Anderson Santos, Peter Hackspacher
  • Paperback ISBN: 9780128239889
  • eBook ISBN: 9780128242414

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Description

Meso-Cenozoic Brazilian Offshore Magmatism: Geochemistry, Petrology and Tectonics presents detailed studies from different points-of-view on the geological—particularly magmatic—evolution of the Brazilian and South Atlantic Ocean offshore areas. This comprehensive book on geological events will help readers understand the holistic evolution of the area across geographical boundaries. Each chapter consists of an introduction, regional and local geology, methods, results, discussions, conclusions and supplementary material related to the geological development in island and seamounts in the Brazilian Platform and seafloor.

Key Features

  • Integrates independent studies and research of the Brazilian offshore magmatism and tectonics into a single book
  • Includes new seamount and island data that was previously unavailable to the public
  • Introduces case studies to provide real-world examples of volcanism and scientific evolution

Readership

Exploration geologists; oil and gas industry. Academic and research scientists in geology, oceanography, environmental sciences, economical geology; experts in petroleum engineering

Table of Contents

  • Cover image
  • Title page
  • Table of Contents
  • Copyright
  • Dedication
  • Contributors
  • Foreword
  • Preface
  • Acknowledgments
  • Tribute to Peter Hackspacher
  • Chapter 1. South Atlantic Ocean: postbreakup configuration and Cenozoic magmatism
  • Introduction
  • Data and methods
  • Geological background
  • Rifting and continental breakup
  • Postbreakup phase
  • Potential field datasets and plate reconstructions
  • Major northwest-trending lineaments in the Brazilian southeastern margin
  • Field mapping of postbreakup tectonic and magmatic events
  • Cenozoic rifting and magmatism in the southeastern Brazilian margin
  • Cenozoic rifting and magmatism in the Rio Grande Rise
  • Postbreakup magmatism offshore and onshore of the Campos and Santos basins
  • Presalt and postsalt magmatism in the region of the Merluza Graben
  • Concluding Remarks
  • Chapter 2. Ocean fracture zones: their evolution and impact on tectonic and magmatism of the South and Southeast Brazilian continental margin
  • Introduction
  • Data and methods
  • Tectono-magmatic features
  • Geological setting
  • Geological description
  • Paraná-Etendeka large igneous province
  • Ponta Grossa Arch
  • Guapiara Lineament
  • Uruguay lineament
  • Cabo Frio magmatic lineament
  • Vitória-Trindade Ridge
  • Rio Grande Rise
  • Poxoreu-Alto Paranaíba Lineament
  • Evolution of Southeast Atlantic fracture zones
  • Santa Helena Fracture Zone
  • Vitória-Trindade Fracture Zone
  • Martin Vaz fracture zone
  • Rio de Janeiro Fracture Zone
  • Rio Grande Fracture Zone
  • Concluding Remarks
  • Chapter 3. Brazilian Continental Margin morphology: ridges, rises, and seamounts
  • Introduction
  • The Brazilian margin
  • Concluding Remarks
  • Chapter 4. The singular St. Peter and St. Paul Archipelago, equatorial Atlantic, Brazil
  • Introduction
  • Local geology
  • Whole-rock geochemistry
  • Geochronology
  • Mineral chemistry
  • Concluding remarks
  • Chapter 5. Genesis and evolution of the Fernando de Noronha mantle plume
  • Introduction
  • Fernando de Noronha volcanism
  • Remédios Formation
  • Quixaba Formation
  • Sedimentary rocks and sediments
  • Geochemistry
  • Classification diagrams
  • Tectonic modeling diagrams
  • Messejana volcanism
  • Petrography
  • Discussion
  • Concluding Remarks
  • Chapter 6. The Abrolhos Magmatic Province, the largest postbreakup magmatism of the Eastern Brazilian margin: a geological, geophysical, and geochemical review
  • Introduction
  • Geological background
  • The tectono-magmatic impact of Abrolhos Magmatic Province volcanism
  • Compiled geochronological, petrological, geochemical, and isotope data
  • Geophysical signature of the Abrolhos Magmatic Province
  • Tectono-magmatic synthesis of the Abrolhos Magmatic Province
  • Concluding remarks
  • Chapter 7. Uplift and subsidence of the RGR: U–Th/He in apatite and EPFT in zircon
  • Introduction
  • Regional settings
  • The Rio Grande Rise
  • Historical background and hypothesis for its origin
  • Contributions to the Rio Grande Risetectonichistory from apatite (U-Th-Sm)/He thermochronology
  • Sampling and procedure
  • Inverse thermal modeling
  • Results
  • Discussions
  • Integration of the thermal events with the geology
  • Late Cretaceous-Palaeocene cooling
  • Eocene cooling
  • Miocene cooling
  • Pliocene-Pleistocene cooling?
  • Concluding Remarks
  • Chapter 8. The role of the Rio Grande Rise on the continental Meso-Cenozoic alkaline magmatism in southwest Brazil
  • Introduction
  • The Rio Grande Rise and Walvis Ridge
  • Southwest Brazil Early Cretaceous magmatism and Late Cretaceous alkaline intrusions
  • Previous models for origin of alkaline igneous rocks
  • Tectono-magmatic reactivation
  • The new model: the correlation of the Rio Grande volcanism and continental alkaline rocks
  • South American magmatic configuration
  • Main features of the Rio Grande Rise: an aborted oceanic spreading center
  • Consequences for platform sediments deposition (Santos Basin)
  • Concluding Remarks
  • Chapter 9. Vitória-Trindade seamounts: undersaturated alkaline series evolution from an enriched metasomatized source
  • Introduction
  • Geological background
  • Chapter 10. Trindade Island: evolution of the geological knowledge
  • Introduction
  • Location and historical context
  • Geological context
  • Stratigraphy of the volcanogenic successions
  • Trindade Complex
  • Desejado Formation
  • Morro Vermelho Formation
  • Valado Formation
  • Paredão Formation
  • Structural control
  • Petrography
  • Volcanic styles and processes
  • Rare-earth elements chemical modeling
  • Geochronology
  • Concluding remarks
  • Chapter 11. Martin Vaz Archipelago: the youngest magmatism in the Brazilian Territory
  • Introduction
  • Geological background
  • Study area location
  • Data and methods
  • Martin Vaz Island geology and lithology
  • Martin Vaz Formation
  • Pico das Gaivotas Formation
  • Bandeira Group
  • Mineral chemistry
  • Age of magmatism
  • Geochemistry
  • Chemical modeling
  • Sr, Nd, and Pb isotopic compositions
  • Concluding Remarks
  • Chapter 12. Brazilian Equatorial Margin: magmatic genesis and evolution
  • Introduction
  • Geological background
  • Data and methods
  • Data review
  • Lithogeochemistry
  • REE chondrite-normalized patterns
  • Sr, Nd, and Pb isotopes
  • Concluding remarks
  • Index

Product details

  • No. of pages: 512
  • Language: English
  • Copyright: © Academic Press 2021
  • Published: December 3, 2021
  • Imprint: Academic Press
  • Paperback ISBN: 9780128239889
  • eBook ISBN: 9780128242414

About the Editors

Anderson Santos

Dr. Anderson Costa dos Santos is a young scientist investigating the Vitória-Trindade Ridge (VTR) magmatism and its relation to the Trindade Mantle Plume which expressed large alkaline igneous provinces inland Brazilian territory. Dedicating his earlier years to teaching optical mineralogy and magmatic processes at Rio de Janeiro State University, he found his passion on seamounts and islands evolution. Dr. Costa dos Santos majored in Geology at Rio de Janeiro State University and obtained his masters and doctorate in Science by the same institution.

Affiliations and Expertise

Adjunct Professor, Universidade do Estado do Rio de Janeiro, Departamento de MIneralogia e Petrologia íGnea (DMPI), Tektos and GeoBioTec groups member, Rio de Janeiro, Brazil.

Peter Hackspacher

Peter Christian Hackspacher is a Senior Professor for Geotectonics at the Department of Petrology and Metallogeny, Institute of Geociences and Exact Sciences,State University São Paulo, IGCE/UNESP. He’s the senior researcher and leader of the Tectonic Group CNPq, as well as the Leader of the Center for Thermochronometry and Thermochronology DPM/IGCE/UNESP. He currently acts as the Director of the Institute for Oceanic Studies at UNESP. His research is focused in tectonics and geochronology with special interest in Precambrian and Phanerozoic terranes related to the PT history through the time, in Brazil, Peruvian Andes, and southwestern Africa. He is engaged in fundamental and applied research of low and high temperature thermochronometry and thermochronology.

Affiliations and Expertise

Senior Professor, Universidade do Estado do Rio de Janeiro, Departamento de MIneralogia e Petrologia íGnea (DMPI), Rio de Janeiro, Brazil.

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