Fueguian Andes foreland fold and thrust belt: Structure and growth strata

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Foreland basin deposits involved in the Fueguian foreland fold and thrust belt were studied on the Atlantic coast of Tierra del Fuego. More specifically, growth strata developed in middle Eocene sequences deposited in the wedge top depozone were analyzed. Restoration methods and kinematics forward m...

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Autores principales:	Ghiglione, Matias, Ramos, Victor Alberto, Cristallini, Ernesto Osvaldo
Publicado:	2002
Materias:	Austral foreland basin Growth strata Restoration of growth folds Tierra del Fuego Wedge-top crustal evolution fold and thrust belt Andes South America
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07160208_v29_n1_p_Ghiglione http://hdl.handle.net/20.500.12110/paper_07160208_v29_n1_p_Ghiglione
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_07160208_v29_n1_p_Ghiglione
record_format	dspace
spelling	paper:paper_07160208_v29_n1_p_Ghiglione2023-06-08T15:42:50Z Fueguian Andes foreland fold and thrust belt: Structure and growth strata Ghiglione, Matias Ramos, Victor Alberto Cristallini, Ernesto Osvaldo Austral foreland basin Growth strata Restoration of growth folds Tierra del Fuego Wedge-top crustal evolution fold and thrust belt Andes South America Foreland basin deposits involved in the Fueguian foreland fold and thrust belt were studied on the Atlantic coast of Tierra del Fuego. More specifically, growth strata developed in middle Eocene sequences deposited in the wedge top depozone were analyzed. Restoration methods and kinematics forward modeling were applied, revealing folding kinematics and defining the geometry of the structure at various stages in its geological history. The folded units are characterized by strong competency contrasts and display a transition in deformation behavior from detachment folding to progressive fault propagation with increasing shortening. The evolution of this sector can be summarized in two different tectonic pulses: (1) lower to middle Eocene: development of detachment folding with limb rotation; sedimentation rate was always lower relative to fold growth rate and both of them decreased with time. (2) upper Eocene?-Oligocene: Continued shortening resulted in the propagation of thrust faults through competent units on the steep front limb and the migration northward of the foreland basin system; probably related to generalized wrench kinematics which affected the region. © 2005 Servicio Nacional de Geología y Minería. Fil:Ghiglione, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ramos, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cristallini, E.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07160208_v29_n1_p_Ghiglione http://hdl.handle.net/20.500.12110/paper_07160208_v29_n1_p_Ghiglione
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Austral foreland basin Growth strata Restoration of growth folds Tierra del Fuego Wedge-top crustal evolution fold and thrust belt Andes South America
spellingShingle	Austral foreland basin Growth strata Restoration of growth folds Tierra del Fuego Wedge-top crustal evolution fold and thrust belt Andes South America Ghiglione, Matias Ramos, Victor Alberto Cristallini, Ernesto Osvaldo Fueguian Andes foreland fold and thrust belt: Structure and growth strata
topic_facet	Austral foreland basin Growth strata Restoration of growth folds Tierra del Fuego Wedge-top crustal evolution fold and thrust belt Andes South America
description	Foreland basin deposits involved in the Fueguian foreland fold and thrust belt were studied on the Atlantic coast of Tierra del Fuego. More specifically, growth strata developed in middle Eocene sequences deposited in the wedge top depozone were analyzed. Restoration methods and kinematics forward modeling were applied, revealing folding kinematics and defining the geometry of the structure at various stages in its geological history. The folded units are characterized by strong competency contrasts and display a transition in deformation behavior from detachment folding to progressive fault propagation with increasing shortening. The evolution of this sector can be summarized in two different tectonic pulses: (1) lower to middle Eocene: development of detachment folding with limb rotation; sedimentation rate was always lower relative to fold growth rate and both of them decreased with time. (2) upper Eocene?-Oligocene: Continued shortening resulted in the propagation of thrust faults through competent units on the steep front limb and the migration northward of the foreland basin system; probably related to generalized wrench kinematics which affected the region. © 2005 Servicio Nacional de Geología y Minería.
author	Ghiglione, Matias Ramos, Victor Alberto Cristallini, Ernesto Osvaldo
author_facet	Ghiglione, Matias Ramos, Victor Alberto Cristallini, Ernesto Osvaldo
author_sort	Ghiglione, Matias
title	Fueguian Andes foreland fold and thrust belt: Structure and growth strata
title_short	Fueguian Andes foreland fold and thrust belt: Structure and growth strata
title_full	Fueguian Andes foreland fold and thrust belt: Structure and growth strata
title_fullStr	Fueguian Andes foreland fold and thrust belt: Structure and growth strata
title_full_unstemmed	Fueguian Andes foreland fold and thrust belt: Structure and growth strata
title_sort	fueguian andes foreland fold and thrust belt: structure and growth strata
publishDate	2002
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07160208_v29_n1_p_Ghiglione http://hdl.handle.net/20.500.12110/paper_07160208_v29_n1_p_Ghiglione
work_keys_str_mv	AT ghiglionematias fueguianandesforelandfoldandthrustbeltstructureandgrowthstrata AT ramosvictoralberto fueguianandesforelandfoldandthrustbeltstructureandgrowthstrata AT cristalliniernestoosvaldo fueguianandesforelandfoldandthrustbeltstructureandgrowthstrata
_version_	1768543426285928448

Fueguian Andes foreland fold and thrust belt: Structure and growth strata

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