Andean Magmatism

1. Front Matter

   Pages i-2

   PDF

2. Volcanic Andes

   1. Front Matter

      Pages 3-3

      PDF

   2. The Tectonic Setting of Active Andean Volcanism

      • R. S. Thorpe

      Pages 4-8

   3. Oxygen Isotope Ratios in Late Cenozoic Andean Volcanics

      • R. S. Harmon, J. Hoefs

      Pages 9-20

   4. Lead Isotopes and Andean Magmagenesis

      • B. A. Barreiro

      Pages 21-30

   5. Isotope and Trace Element Data for Orogenic Andesites from the Austral Andes

      • C. R. Stern, K. Futa, K. Muehlenbachs

      Pages 31-46

   6. Petrology and Chemistry of Volcanic Rocks of the Southern Andes

      • L. López-Escobar

      Pages 47-71

   7. Geochemical Variations in Volcanic Rocks from Central-south Chile (33–42°S)

      • R. L. Hickey, D. C. Gerlach, F. A. Frey

      Pages 72-95

   8. Sr, Nd, Pb and O Isotope Composition of Late Cenozoic Volcanics, northernmost SVZ (33–34°S)

      • C. R. Stern, K. Futa, K. Muehlenbachs, F. M. Dobbs, J. Muñoz, E. Godoy et al.

      Pages 96-105

   9. The Cerro Purico Shield Complex, North Chile

      • P. W. Francis, W. F. McDonough, M. Hammill, L. J. O’Callaghan, R. S. Thorpe

      Pages 106-123

   10. Quantitative Models for Crustal Contamination in the Central and Northern Andes

       • D. E. James

       Pages 124-138

   11. Correlated Sr Isotope and Geochemical Variations in Basalts and Basaltic Andesites from Guatemala

       • N. K. Grant, W. I. Rose Jr, L. A. Fultz

       Pages 139-149

3. Plutonic Andes

   1. Front Matter

      Pages 151-151

      PDF

   2. Phanerozoic Plutonism in the Peruvian Andes

      • W. S. Pitcher

      Pages 152-167

   3. The Coastal Batholith of Peru

      • M. P. Atherton

      Pages 168-179

   4. Lead Isotope Systematics in Batholithic Rocks of the Western and Coastal Cordilleras, Peru

      • S. B. Mukasa, G. R. Tilton

      Pages 180-189

   5. Geochemical Characteristics of the Late Mesozoic Andean Volcanics

      • M. Boily, C. Brooks, D. E. James

      Pages 190-202

   6. The Magmatic Evolution of the Cordillera Oriental, Southeastern Peru

      • D. J. Kontak, A. H. Clark, E. Farrar

      Pages 203-219

   7. Geochemical Characteristics of Magmatism in the Southern Andes (45–46° S)

      • D. S. Bartholomew, J. Tarney

      Pages 220-229

4. Back Matter

   Pages 231-251

   PDF

Destructive plate margin magmagenesis is one of the most intensely studied and widely debated topics in the earth sciences at present. Calc-alkaline volcanic and plutonic rocks in orogenic settings exhibit such a diversity of composition and character that the subducted oceanic lithosphere, the overlying 'enriched' lithospheric mantle and the lower continental crust all have been advocated recently as the primary source region for island-arc and continental-margin basaltic to andesitic magmas. The role of the upper continental crust is also a matter of continuing controversy. It is clear that crustal contamination is a common, but not universal, feature of destructive plate margin magmatism. Whether this contamination is introduced at source by subduction-related processes or occurs during magma transit by bulk anatexis and magma mixing, selective contamination or coupled fractional crystallization-assimilation mechanisms is central to most current discussions of andesite petrogenesis. This book presents a series of papers which directly address these and other important geological and geochemical problems within the context of the Mesozoic-Cenozoic calc-alkaline magmatism characteristic of the Andean Cordillera of western South America. Although it is aimed primarily at postgraduate students and researchers familiar with the Andes, it is also a useful general reference for workers in other fields who wish to gain an insight into current thoughts, ideas and speculations on 'andesitic' magmatism at destructive plate margins.

• Contamination
• assimilation
• evolution
• geoscience
• isotope
• lithosphere
• magma
• ocean
• oceanic
• petrogenesis
• pluton
• plutonic rock
• research
• subduction

• Southern Methodist University, Dallas, USA

  R. S. Harmon

• Dartmouth College, Hannover, USA

  B. A. Barreiro

Policies and ethics