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1. Contributors

Author

Gemma Acosta, Ariel Almendral, Orlando Álvarez, Inés Aramendía, María Alejandra Arecco, Juan P. Ariza, C. Arriagada, Pedro Arriola, Pilar Ávila, Patrice Baby, Vanesa Barberón, Stéphanie Brichau, Ysabel Calderon, Mauricio Calderón, Gabriela Beatriz Franco Camelio, Horacio N. Canelo, Victor Carlotto, Barbara Carrapa, Ryan Cochrane, Gilda Collo, Eduardo Contreras-Reyes, Peter Copeland, Christian Creixell, Edward Cuipa, Federico M. Dávila, Peter G. DeCelles, Juan Díaz-Alvarado, A. Echaurren, Sebastián Echeverri, A. Encinas, Adrien Eude, Miguel Ezpeleta, Lucía Fernández Paz, D. Figueroa, Andrés Folguera, Gonzalo Galaz, Héctor P.A. García, Carmala N. Garzione, Sarah W.M. George, Matías C. Ghiglione, P. Giampaoli, Guido M. Gianni, Mario Gimenez, Johannes Glodny, E. Gobbo, Marcelo A. Gonzalez, E. Gabriela Gutiérrez, Camilo Higuera, Brian K. Horton, Sofía Iannelli, Lily J. Jackson, James N. Kellogg, Keith A. Klepeis, Federico Lince Klinger, Cullen Kortyna, Thomas J. Lapen, F. Lince-Klinger, Vanesa D. Litvak, C. López, Melanie Louterbach, Leonard Luzieux, Federico Martina, Myriam P. Martinez, F. Martínez, Joseph Martinod, Ezequiel García Morabito, Héctor Mora-Páez, Federico Moreno, Francisco Sánchez Nassif, C. Navarrete, Julieta C. Nóbile, Paul O’Sullivan, Soty Odoh, Verónica Oliveros, G. Olivieri, Sebastián Correa Otto, Mauricio Parra, Ana María Patiño, A. Paul, Mark Pecha, Stefanie Pechuan, Agustina Pesce, Stella Poma, Alice Prudhomme, Juan Carlos Ramírez, Miguel E. Ramos, Alexandra Robert, E. Rocha, E.A. Rojas Vera, Christian Romero, Gonzalo Ronda, Marcos A. Sánchez, Joel E. Saylor, Edward R. Sobel, Santiago R. Soler, Richard A. Spikings, Rodrigo J. Suárez, Christian Sue, Kurt Sundell, Tonny B. Thomsen, Jonathan Tobal, Cristian Vallejo, Roelant Van der Lelij, D. Villagomez, Laura E. Webb, Wilfried Winkler, and Gonzalo Zamora

Published
2019
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2. Structure and tectonic evolution of the Interandean and Subandean Zones of the central Andean fold-thrust belt of Bolivia

Author

P. Giampaoli, E. Rocha, D. Figueroa, E. Gobbo, E.A. Rojas Vera, and G. Olivieri

Subjects
Paleontology, Paleozoic, Proterozoic, Sedimentary rock, Orogeny, Fold (geology), Structural basin, Cenozoic, Geology, Devonian
Abstract

The Interandean and Subandean Zones of the central Andean fold-thrust belt in Bolivia have a complex Proterozoic to Cenozoic tectonic history. This work presents several regional structural transects constructed from field relationships, new well and seismic data, and a compilation of previously published thermochronological ages in order to better understand along-strike variations in shortening, kinematics, and tectonic inheritance of the fold-thrust belt. New seismic lines reveal evidence of Cambrian extension, early Paleozoic deformation related to the Famatinian orogeny, and Cenozoic synorogenic shortening in the central Andes. The kinematics of the Interandean and Subandean Zones can be characterized by basement tectonic wedging and duplex formation, with detachment folding as the primary mechanism that accommodates shortening of the sedimentary cover. Along-strike, large structures were formed by lateral growth and linkage of discrete structural segments. In the northern section of the study area, structures are more evolved and have accommodated more shortening (88% minimum shortening) as compared to their counterpart in the south (62% minimum shortening). These differences could be related to the north to south difference in exhumation ages in the Interandean Zone during Cenozoic shortening, or perhaps controlled by the Devonian to Silurian sedimentary thicknesses and pre-Andean basin development.

Published
2019
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