Closure type effects on the structural pattern of an inverted extensional basin of variable width: Results from analogue models

In order to further understand the controls on the structural configuration of inverted basins, previous research has vastly explored the role of rift-stage stress field variations on the resulting structure produced by basin inversion. Analogue modeling has broadly enabled geoscientists to gain ins...

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Autor principal: Jara, P.
Otros Autores: Likerman, J., Charrier, R., Herrera, S., Pinto, L., Villarroel, M., Winocur, D.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: Elsevier Ltd 2018
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100 1 |a Jara, P. 
245 1 0 |a Closure type effects on the structural pattern of an inverted extensional basin of variable width: Results from analogue models 
260 |b Elsevier Ltd  |c 2018 
270 1 0 |m Jara, P.; Departamento de Ingeniería en Minas, Facultad de Ingeniería, Universidad de SantiagoChile; email: pamela.jara@usach.cl 
506 |2 openaire  |e Política editorial 
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520 3 |a In order to further understand the controls on the structural configuration of inverted basins, previous research has vastly explored the role of rift-stage stress field variations on the resulting structure produced by basin inversion. Analogue modeling has broadly enabled geoscientists to gain insight into the controls on the structural evolution during basin inversion, such as: the inherited structural array of the basin, sedimentary load or sedimentary thickness, plan-view shape of the basin (length and width), and variations on the governing stress field, among other factors. This work sheds light on the influence exerted by the closure style on inversion of an elongated model basin with a variable width, generated by differential extension. We subsequently induced inversion by modifying the orientation of the post-rift contractional stress field: (i) in a first model, contraction is homogeneous along-strike (parallel to the major axis of the basin); and (ii) in a second model, contraction is heterogeneous along-strike and exerted in the same orientation and amount in which extension was induced (about a pivot point). We focus on the three-dimensional geometry of the structures generated by inversion, their vergence and surficial trace, and where they are prone to concentrate within the basin, to finally analyze and compare our results with natural examples of inverted Andean basin systems. Our results indicate that most of the contractional deformation imposed in the analog models is absorbed in the interiors of the basin in its widest zones by means of inverted normal faults and backthrusts. However, when the amount of shortening is higher than extension, deformation is propagated outside the basin where shortcuts and new oblique reverse faults are dominant, which promote a major uplift. © 2017 Elsevier Ltd  |l eng 
593 |a Departamento de Ingeniería en Minas, Facultad de Ingeniería, Universidad de Santiago, Chile 
593 |a Laboratorio de Modelado Geológico (LaMoGe), Instituto de Estudios Andinos Don Pablo Groeber, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina 
593 |a Laboratorio de Tectónica Andina, Instituto de Estudios Andinos Don Pablo Groeber, Universidad de Buenos Aires, Departamento de Ciencias Geológicas, Buenos Aires, Argentina 
593 |a Laboratorio de Modelación Analógica, Departamento de Geología, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Chile 
593 |a Escuela de Ciencias de la Tierra, Universidad Andrés Bello, Santiago, Chile 
690 1 0 |a ANALOGUE MODELING 
690 1 0 |a BASIN WIDTH 
690 1 0 |a CLOSURE STYLE 
690 1 0 |a TECTONIC INVERSION 
690 1 0 |a ANALOG MODEL 
690 1 0 |a BASIN EVOLUTION 
690 1 0 |a DEFORMATION 
690 1 0 |a EXTENSIONAL TECTONICS 
690 1 0 |a NORMAL FAULT 
690 1 0 |a STRESS FIELD 
690 1 0 |a THRUST 
690 1 0 |a UPLIFT 
700 1 |a Likerman, J. 
700 1 |a Charrier, R. 
700 1 |a Herrera, S. 
700 1 |a Pinto, L. 
700 1 |a Villarroel, M. 
700 1 |a Winocur, D. 
773 0 |d Elsevier Ltd, 2018  |g v. 87  |h pp. 157-173  |p J. South Am. Earth Sci.  |x 08959811  |w (AR-BaUEN)CENRE-1080  |t Journal of South American Earth Sciences 
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