Geological Records of the Fuegian Andes Deformed Complex Framed in a Patagonian Orogenic Belt Regional Context
Rogelio Daniel Acevedo
Part of the SpringerBriefs in Earth System Sciences book series (BRIEFSEARTHSYST)
Western Sector of the Fuegian Andes Deformed Complex (FADC-WS)
The Basic Eruptive Rocks of Alvear and Sorondo Ranges (Mount Olivia)
The Cretaceous Layers Later than the Early Cretaceous
The Estimated Basement of the Fuegian Andes Mesozoic Stratigraphic Series and Those Rocks Regarded as Pre-mesozoic in Age
Eastern Sector of the Fuegian Andes Deformed Complex (FADC-ES)
The Deformed Complex and the Formational Units
The Magmatic Rocks Probably Corresponding to the Andean Batholith and the Associated Metamorphic Contact Phenomena
Nature and Synthesis of the Results Obtained
The Synthesis About the Formational Matter-Lithostratigraphic Units
A Simplified View About the Fuegian Andes and the Complex Folding of the Mesozoic and Early Tertiary Layers
The Fuegian Andes in Argentina show 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
1.Centro Austral de Investigaciones Científicas (CADIC-CONICET)Ushuaia, Tierra del FuegoArgentina
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Series Print ISSN 2191-589X
Series Online ISSN 2191-5903