Geological Records of the Fuegian Andes Deformed Complex Framed in a Patagonian Orogenic Belt Regional Context

1. Front Matter

   Pages i-ix

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2. Introduction

   • Rogelio Daniel Acevedo

   Pages 1-5

3. Background

   • Rogelio Daniel Acevedo

   Pages 7-12

4. Western Sector of the Fuegian Andes Deformed Complex (FADC-WS)

   • Rogelio Daniel Acevedo

   Pages 13-28

5. The Basic Eruptive Rocks of Alvear and Sorondo Ranges (Mount Olivia)

   • Rogelio Daniel Acevedo

   Pages 29-31

6. The Cretaceous Layers Later than the Early Cretaceous

   • Rogelio Daniel Acevedo

   Pages 33-36

7. The Estimated Basement of the Fuegian Andes Mesozoic Stratigraphic Series and Those Rocks Regarded as Pre-mesozoic in Age

   • Rogelio Daniel Acevedo

   Pages 37-41

8. Eastern Sector of the Fuegian Andes Deformed Complex (FADC-ES)

   • Rogelio Daniel Acevedo

   Pages 43-73

9. The Deformed Complex and the Formational Units

   • Rogelio Daniel Acevedo

   Pages 75-81

10. The Magmatic Rocks Probably Corresponding to the Andean Batholith and the Associated Metamorphic Contact Phenomena

    • Rogelio Daniel Acevedo

    Pages 83-93

11. Nature and Synthesis of the Results Obtained

    • Rogelio Daniel Acevedo

    Pages 95-102

12. The Synthesis About the Formational Matter-Lithostratigraphic Units

    • Rogelio Daniel Acevedo

    Pages 103-106

13. A Simplified View About the Fuegian Andes and the Complex Folding of the Mesozoic and Early Tertiary Layers

    • Rogelio Daniel Acevedo

    Pages 107-113

This book studies the Fuegian Andes in Argentina, showing both simple and complex aspects. The first ones refer to the general stratigraphy of the area and the latter result from their tectonic characteristics. Concerning the stratigraphy, an appraisal of the denomination and valorization of formations of Jurassic and early Cretaceous age is performed here to reach the simple scheme of the Fuegian-Patagonian continuity under the name of “Fuegian Andes Deformed Complex”. As an essay the formational nomenclature is simplified and the local concept of basement is evaluated. In relation to their structural aspects it is assumed that the formation of the orogenic Fuegian arc and the folding of the Mesozoic and early Tertiary layers are connected phenomena. Tectonic forces from the West, the Northeast and the South have had participation in the formation of the tectonic arc. The lithostatic column pressure was added once the layers were folded and thrusted upwards during the birth of the Fuegian Andes. Even the speculation of a great main fold overturned to North, as an abstraction, is considered. Instead, the Magallanes-Fagnano fault is appreciated only as a product of the transcurrent Quaternary movements, lacking associated eruptive processes that contribute to define plate borders.

• Stratigraphy of the Fuegian Andes
• Regional Geology
• Tierra Del Fuego
• Patagonia
• Southernmost South America
• Mesozoic complex
• Structural geology of the Fuegian Andes
• Tectonics of the Fuegian Andes
• structural geology

• Centro Austral de Investigaciones Científicas (CADIC-CONICET), Ushuaia, Tierra del Fuego, Argentina

  Rogelio Daniel Acevedo

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