Updated Nazca (Farallon)-South America relative motions during the last 40 My: Implications for mountain building in the central Andean region

Recently published seafloor data around the Antarctica plate boundaries, as well as calibration of the Cenozoic Magnetic Polarity Time Scale, allow a reevaluation of the Nazca (Farallon)-South America relative convergence kinematics since late Middle Eocene time. The new reconstruction parameters co...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Somoza, R.
Formato: JOUR
Materias:
Cenozoic
convergence
plate motion
South America
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_08959811_v11_n3_p211_Somoza
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_08959811_v11_n3_p211_Somoza
record_format dspace
spelling todo:paper_08959811_v11_n3_p211_Somoza2023-10-03T15:42:26Z Updated Nazca (Farallon)-South America relative motions during the last 40 My: Implications for mountain building in the central Andean region Somoza, R. Cenozoic convergence plate motion South America Recently published seafloor data around the Antarctica plate boundaries, as well as calibration of the Cenozoic Magnetic Polarity Time Scale, allow a reevaluation of the Nazca (Farallon)-South America relative convergence kinematics since late Middle Eocene time. The new reconstruction parameters confirm the basic characteristics determined in previous studies. However, two features are notable in the present data set: a strong increase in convergence rate in Late Oligocene time, and a slowdown during Late Miocene time. The former is coeval with the early development of important tectonic characteristics of the present Central Andes, such as compressional failure in wide areas of the region, and the establishment of Late Cenozoic magmatism. This supports the idea that a relationship exists between strong acceleration of convergence and mountain building in the Central Andean region. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08959811_v11_n3_p211_Somoza
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cenozoic
convergence
plate motion
South America
spellingShingle Cenozoic
convergence
plate motion
South America
Somoza, R.
Updated Nazca (Farallon)-South America relative motions during the last 40 My: Implications for mountain building in the central Andean region
topic_facet Cenozoic
convergence
plate motion
South America
description Recently published seafloor data around the Antarctica plate boundaries, as well as calibration of the Cenozoic Magnetic Polarity Time Scale, allow a reevaluation of the Nazca (Farallon)-South America relative convergence kinematics since late Middle Eocene time. The new reconstruction parameters confirm the basic characteristics determined in previous studies. However, two features are notable in the present data set: a strong increase in convergence rate in Late Oligocene time, and a slowdown during Late Miocene time. The former is coeval with the early development of important tectonic characteristics of the present Central Andes, such as compressional failure in wide areas of the region, and the establishment of Late Cenozoic magmatism. This supports the idea that a relationship exists between strong acceleration of convergence and mountain building in the Central Andean region.
format JOUR
author Somoza, R.
author_facet Somoza, R.
author_sort Somoza, R.
title Updated Nazca (Farallon)-South America relative motions during the last 40 My: Implications for mountain building in the central Andean region
title_short Updated Nazca (Farallon)-South America relative motions during the last 40 My: Implications for mountain building in the central Andean region
title_full Updated Nazca (Farallon)-South America relative motions during the last 40 My: Implications for mountain building in the central Andean region
title_fullStr Updated Nazca (Farallon)-South America relative motions during the last 40 My: Implications for mountain building in the central Andean region
title_full_unstemmed Updated Nazca (Farallon)-South America relative motions during the last 40 My: Implications for mountain building in the central Andean region
title_sort updated nazca (farallon)-south america relative motions during the last 40 my: implications for mountain building in the central andean region
url http://hdl.handle.net/20.500.12110/paper_08959811_v11_n3_p211_Somoza
work_keys_str_mv AT somozar updatednazcafarallonsouthamericarelativemotionsduringthelast40myimplicationsformountainbuildinginthecentralandeanregion
_version_ 1782024356230070272

Ejemplares similares