The Guanacaste Volcanic Arc Sliver of Northwestern Costa Rica

Abstract Recent studies have shown that the Nicoya Peninsula of northwestern Costa Rica is moving northwestward ~11 mm a−1 as part of a tectonic sliver. Toward the northwest in El Salvador the northern sliver boundary is marked by a dextral strike-slip fault system active since Late Pleistocene time...

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Autores principales: Walter Montero, Jonathan C. Lewis, Maria Cristina Araya
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Lenguaje:EN
Publicado: Nature Portfolio 2017
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Acceso en línea:https://doaj.org/article/850e5460f3054b6cb9bd6e547d8d7938
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spelling oai:doaj.org-article:850e5460f3054b6cb9bd6e547d8d79382021-12-02T11:52:59ZThe Guanacaste Volcanic Arc Sliver of Northwestern Costa Rica10.1038/s41598-017-01593-82045-2322https://doaj.org/article/850e5460f3054b6cb9bd6e547d8d79382017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01593-8https://doaj.org/toc/2045-2322Abstract Recent studies have shown that the Nicoya Peninsula of northwestern Costa Rica is moving northwestward ~11 mm a−1 as part of a tectonic sliver. Toward the northwest in El Salvador the northern sliver boundary is marked by a dextral strike-slip fault system active since Late Pleistocene time. To the southeast there is no consensus on what constitutes the northern boundary of the sliver, although a system of active crustal faults has been described in central Costa Rica. Here we propose that the Haciendas-Chiripa fault system serves as the northeastern boundary for the sliver and that the sliver includes most of the Guanacaste volcanic arc, herein the Guanacaste Volcanic Arc Sliver. In this paper we provide constraints on the geometry and kinematics of the boundary of the Guanacaste Volcanic Arc Sliver that are timely and essential to any models aimed at resolving the driving mechanism for sliver motion. Our results are also critical for assessing geological hazards in northwestern Costa Rica.Walter MonteroJonathan C. LewisMaria Cristina ArayaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Walter Montero
Jonathan C. Lewis
Maria Cristina Araya
The Guanacaste Volcanic Arc Sliver of Northwestern Costa Rica
description Abstract Recent studies have shown that the Nicoya Peninsula of northwestern Costa Rica is moving northwestward ~11 mm a−1 as part of a tectonic sliver. Toward the northwest in El Salvador the northern sliver boundary is marked by a dextral strike-slip fault system active since Late Pleistocene time. To the southeast there is no consensus on what constitutes the northern boundary of the sliver, although a system of active crustal faults has been described in central Costa Rica. Here we propose that the Haciendas-Chiripa fault system serves as the northeastern boundary for the sliver and that the sliver includes most of the Guanacaste volcanic arc, herein the Guanacaste Volcanic Arc Sliver. In this paper we provide constraints on the geometry and kinematics of the boundary of the Guanacaste Volcanic Arc Sliver that are timely and essential to any models aimed at resolving the driving mechanism for sliver motion. Our results are also critical for assessing geological hazards in northwestern Costa Rica.
format article
author Walter Montero
Jonathan C. Lewis
Maria Cristina Araya
author_facet Walter Montero
Jonathan C. Lewis
Maria Cristina Araya
author_sort Walter Montero
title The Guanacaste Volcanic Arc Sliver of Northwestern Costa Rica
title_short The Guanacaste Volcanic Arc Sliver of Northwestern Costa Rica
title_full The Guanacaste Volcanic Arc Sliver of Northwestern Costa Rica
title_fullStr The Guanacaste Volcanic Arc Sliver of Northwestern Costa Rica
title_full_unstemmed The Guanacaste Volcanic Arc Sliver of Northwestern Costa Rica
title_sort guanacaste volcanic arc sliver of northwestern costa rica
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/850e5460f3054b6cb9bd6e547d8d7938
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