Geology and Tectonics of Northwestern South America: The Pacific-Caribbean-Andean Junction
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This book provides a comprehensive overview of the geological evolution of the Northern Andes and contiguous shield areas, with a focus upon Colombia. Updated geological interpretations are supported by modern lithogeochemical, seismic, gravity and magnetic data and radiogenic isotope and radiometric age determinations. The composite data permits a detailed interpretation of the tectono-magmatic history of the Northern Andean Block, including the Andes of Colombia, northern Ecuador, western Venezuela and eastern Panamá. Tectonic reconstructions based upon characterization of more than thirty litho-tectonic and morpho-structural units, terrane assemblages and tectonic realms, and their bounding suture and fault systems, highlight the intimate and complementary Mesozoic-Cenozoic history of the Northern Andean Block and the Pacific and Caribbean Plates. The complex nature of Northern Andean assembly contrasts with ‘‘classical’’ Central Andean ‘‘Cordilleran-type’’ orogenic models. Differences render the application of typical Cordilleran-type models inappropriate for the Colombian Andes. The importance of underlying Proterozoic through mid-Mesozoic elements, in the development of Meso-Cenozoic Northern Andean orogeny-phase tectonic configurations is analyzed in the light of spatial-temporal studies and reconstructions related to basin formation, sedimentation, deformation, uplift mechanisms, structural style and magmatic evolution. The pre-Andean architecture of north western South America has played a pre-determinative role in the development of the Northern Andean orogenic system. 16 contributions analyze key stratigraphic, structural, metamorphic, magmatic and tectonic questions, and provide solutions as far as the most recent published field-based studies permit. The volume provides geological interpretations and tectonic models which contrast with repetitive theoretical proposals frequently found in the available literature. Front Matter ....Pages i-xxv Front Matter ....Pages 1-1 Phanerozoic Orogens of Northwestern South America: Cordilleran-Type Orogens. Taphrogenic Tectonics. The Maracaibo Orogenic Float. The Chocó-Panamá Indenter (Fabio Cediel)....Pages 3-95 Proterozoic Basement, Paleozoic Tectonics of NW South America, and Implications for Paleocontinental Reconstruction of the Americas (Pedro A. Restrepo-Pace, Fabio Cediel)....Pages 97-112 Front Matter ....Pages 113-113 The Proterozoic Basement of the Western Guiana Shield and the Northern Andes (Salomon B. Kroonenberg)....Pages 115-192 Front Matter ....Pages 193-193 Ordovician Orogeny and Jurassic Low-Lying Orogen in the Santander Massif, Northern Andes (Colombia) (Carlos A. Zuluaga, Julian A. Lopez)....Pages 195-250 Front Matter ....Pages 251-251 Spatial-Temporal Migration of Granitoid Magmatism and the Phanerozoic Tectono-Magmatic Evolution of the Colombian Andes (Hildebrando Leal-Mejía, Robert P. Shaw, Joan Carles Melgarejo i Draper)....Pages 253-410 Phanerozoic Metallogeny in the Colombian Andes: A Tectono-magmatic Analysis in Space and Time (Robert P. Shaw, Hildebrando Leal-Mejía, Joan Carles Melgarejo i Draper)....Pages 411-549 Paleogene Magmatism of the Maracaibo Block and Its Tectonic Significance (José F. Duque-Trujillo, Teresa Orozco-Esquivel, Carlos Javier Sánchez, Andrés L. Cárdenas-Rozo)....Pages 551-601 Late Cenozoic to Modern-Day Volcanism in the Northern Andes: A Geochronological, Petrographical, and Geochemical Review (M. I. Marín-Cerón, H. Leal-Mejía, M. Bernet, J. Mesa-García)....Pages 603-648 Front Matter ....Pages 649-649 Diagnostic Structural Features of NW South America: Structural Cross Sections Based Upon Detailed Field Transects (Fabio Colmenares, Laura Román García, Johan M. Sánchez, Juan C. Ramirez)....Pages 651-672 Cretaceous Stratigraphy and Paleo-Facies Maps of Northwestern South America (Luis Fernando Sarmiento-Rojas)....Pages 673-747 Morphotectonic and Orogenic Development of the Northern Andes of Colombia: A Low-Temperature Thermochronology Perspective (Sergio A. Restrepo-Moreno, David A. Foster, Matthias Bernet, Kyoungwon Min, Santiago Noriega)....Pages 749-832 The Romeral Shear Zone (César Vinasco)....Pages 833-876 Front Matter ....Pages 877-877 Exhumation-Denudation History of the Maracaibo Block, Northwestern South America: Insights from Thermochronology (Mauricio A. Bermúdez, Matthias Bernet, Barry P. Kohn, Stephanie Brichau)....Pages 879-898 Front Matter ....Pages 899-899 The Geology of the Panama-Chocó Arc (Stewart D. Redwood)....Pages 901-932 Front Matter ....Pages 933-933 Sediment Transfers from the Andes of Colombia during the Anthropocene (Juan D. Restrepo)....Pages 935-955 The Historical, Geomorphological Evolution of the Colombian Littoral Zones (Eighteenth Century to Present) (Iván D. Correa, Cristina I. Pereira)....Pages 957-981 Back Matter ....Pages 983-1001
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