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Early Cretaceous Volcanism in Central and Eastern Argentina During Gondwana Break-Up

  • Silvia Leonor Lagorio
  • Haroldo Vizán
  • Silvana Evangelina Geuna

Part of the SpringerBriefs in Earth System Sciences book series (BRIEFSEARTHSYST)

Table of contents

  1. Front Matter
    Pages i-x
  2. Silvia Leonor Lagorio, Haroldo Vizán, Silvana Evangelina Geuna
    Pages 1-7
  3. Silvia Leonor Lagorio, Haroldo Vizán, Silvana Evangelina Geuna
    Pages 9-86
  4. Silvia Leonor Lagorio, Haroldo Vizán, Silvana Evangelina Geuna
    Pages 87-121
  5. Silvia Leonor Lagorio, Haroldo Vizán, Silvana Evangelina Geuna
    Pages 137-139
  6. Back Matter
    Pages 141-141

About this book

Introduction

This book analyzes the Early Cretaceous volcanic processes in Misiones Province and in Sierra Chica de Córdoba (Argentina). The volcanism in Misiones is tholeiitic and belongs to the Parana Magmatic Province (PMP), which extends throughout South America. In contrast, the volcanism in Córdoba is geographically restricted and of alkaline nature, representing a potassic locality peripheral to the PMP. To understand the causes of and geodynamic processes involved in these volcanisms, a new 40Ar /39Ar of 129.6 ± 1 Ma of a trachyte from Sierra Chica de Córdoba is presented. This dating points out that the volcanism in Sierra Chica de Córdoba slightly postdates PMP lavas. Moreover, complementary geochemical analyses from Misiones Province are presented and compared with those from the whole PMP in order to characterize its source

Keywords

Early Cretaceous Large Igneous Province Magmatic Processes Mantle Convection South America

Authors and affiliations

  • Silvia Leonor Lagorio
    • 1
  • Haroldo Vizán
    • 2
  • Silvana Evangelina Geuna
    • 3
  1. 1.(SEGEMAR). Parque Tecnológico MigueleteInstituto de Geología y Recursos MineralBuenos AiresArgentina
  2. 2.Facultad de Ciencias Exactas y NaturalesDepartamento de Ciencias Geológicas,Buenos AiresArgentina
  3. 3.Facultad de Ciencias Exactas y NaturalesDepartamento de Ciencias Geológicas,Buenos AiresArgentina

Bibliographic information

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