Staff View: Neotectonics of the Ochomogo and Capellades faults and its relation with the Aguacaliente fault system, southern slopes of the Irazú-Turrialba massif, Costa Rica

Neotectonics of the Ochomogo and Capellades faults and its relation with the Aguacaliente fault system, southern slopes of the Irazú-Turrialba massif, Costa Rica

Geomorphic studies supplemented with geological information allow us to define the predominantly left-lateral strike-slip Capellades and Ochomogo faults. The Capellades fault connects with the Aguacaliente fault through the Cartago transpressive zone, including E-W folds and oblique (reverse-left la...

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Main Authors:	Montero Pohly, Walter, Rojas Quesada, Wilfredo, Linkimer Abarca, Lepolt
Format:	Artículo
Language:	Español
Published:	Universidad de Costa Rica 2011
Subjects:	morphotectonics neotectonics seismicity irazú volcano costa rica morfotectónica neotectónica sismicidad volcán irazú
Online Access:	http://revistas.ucr.ac.cr/index.php/geologica/article/view/12239 https://hdl.handle.net/10669/22376

id	22376
recordtype	dspace
spelling	223762021-05-03T22:54:27Z Neotectonics of the Ochomogo and Capellades faults and its relation with the Aguacaliente fault system, southern slopes of the Irazú-Turrialba massif, Costa Rica Neotectónica de las fallas Ochomogo y Capellades y su relación con el sistema de falla Aguacaliente, falda sur macizo Irazú-Turrialba, Costa Rica Montero Pohly, Walter Rojas Quesada, Wilfredo Linkimer Abarca, Lepolt morphotectonics neotectonics seismicity irazú volcano costa rica morfotectónica neotectónica sismicidad volcán irazú costa rica Geomorphic studies supplemented with geological information allow us to define the predominantly left-lateral strike-slip Capellades and Ochomogo faults. The Capellades fault connects with the Aguacaliente fault through the Cartago transpressive zone, including E-W folds and oblique (reverse-left lateral) faults. The Ochomogo fault is located between south San José and the southern slopes of the Irazú Volcano, is about 22 km long, and has a nearly left lateral strike slip along its E-W trend to an oblique (normal-left-lateral) slip along its ENE trending part. The interaction between the Ochomogo and Aguacaliente faults results in a transtensional regime that formed the Coris and Guarco valleys. The Capellades fault trends ENE to NE, is about 25 km long, and is located in the southern and southeastern slopes of the Irazú and Turrialba volcanoes. Several geomorphic features show between few meters to 0.67 km of left-lateral displacements along the Capellades fault trace. Based on the Middle-to-Late Pleistocene geological units exposed on the S-SE slopes of the Irazú Volcano, the fault slip rate is estimated to be between a minimum of 0.5 mm/yr and a maximum of 1.1-3.3 mm/yr. Estudios geomórficos complementados con información geológica permitieron definir las fallas predomi- nantemente sinestrales Capellades y Ochomogo. Las fallas Capellades y Aguacaliente se conectan por medio de la zona de transpresión de Cartago caracterizada por fallas oblicuas inversas-sinestrales y pliegues de rumbos cercanos al E-W. La falla Ochomogo localizada entre el sur de San José y la falda sur del volcán Irazú, tiene una extensión de unos 22 km y varía desde un deslizamiento sinestral bastante puro en sus sectores de rumbo E-W a un desplazamiento oblicuo sinestral-normal en su sector de rumbo ENE. La interacción entre las fallas Ochomogo y Aguacaliente ha originado una zona de tracción que ha originado los valles de Coris y del Guarco, denominada la zona transtensiva de Coris-Guarco. La falla Capellades tiene un rumbo ENE a NE y una longitud de unos 25 km sobre el flanco S y SE de los volcanes Irazú y Turrialba. Indicadores geomórficos diferentes muestran desplazamientos sinestrales desde unos pocos metros hasta 0,67 km a lo largo de diversos sectores de la falla Capellades. Con base en las edades de las unidades geológicas del Pleistoceno Medio al Superior reconocidas en el flanco S-SE del volcán Irazú, se ha determinado que la tasa de deslizamiento de la falla Capellades tiene un valor mínimo de 0,5 mm/año y uno máximo entre 1,1 – 3,3 mm/año. 2011-04-01 2016-05-03T14:24:23Z 2016-05-03T14:24:23Z artículo científico http://revistas.ucr.ac.cr/index.php/geologica/article/view/12239 10.15517/rgac.v0i48.12239 https://hdl.handle.net/10669/22376 spa Revista Geológica de América Central; Copyright (c) 2014 Revista Geológica de América Central application/pdf Universidad de Costa Rica Revista Geológica de América Central; Revista Geológica de América Central: Número 48 Revista Geológica de América Central; Revista Geológica de América Central: Número 48 2215-261X 0256-7024
institution	Universidad de Costa Rica
collection	Repositorio KERWA
language	Español
topic	morphotectonics neotectonics seismicity irazú volcano costa rica morfotectónica neotectónica sismicidad volcán irazú costa rica
spellingShingle	morphotectonics neotectonics seismicity irazú volcano costa rica morfotectónica neotectónica sismicidad volcán irazú costa rica Montero Pohly, Walter Rojas Quesada, Wilfredo Linkimer Abarca, Lepolt Neotectonics of the Ochomogo and Capellades faults and its relation with the Aguacaliente fault system, southern slopes of the Irazú-Turrialba massif, Costa Rica
description	Geomorphic studies supplemented with geological information allow us to define the predominantly left-lateral strike-slip Capellades and Ochomogo faults. The Capellades fault connects with the Aguacaliente fault through the Cartago transpressive zone, including E-W folds and oblique (reverse-left lateral) faults. The Ochomogo fault is located between south San José and the southern slopes of the Irazú Volcano, is about 22 km long, and has a nearly left lateral strike slip along its E-W trend to an oblique (normal-left-lateral) slip along its ENE trending part. The interaction between the Ochomogo and Aguacaliente faults results in a transtensional regime that formed the Coris and Guarco valleys. The Capellades fault trends ENE to NE, is about 25 km long, and is located in the southern and southeastern slopes of the Irazú and Turrialba volcanoes. Several geomorphic features show between few meters to 0.67 km of left-lateral displacements along the Capellades fault trace. Based on the Middle-to-Late Pleistocene geological units exposed on the S-SE slopes of the Irazú Volcano, the fault slip rate is estimated to be between a minimum of 0.5 mm/yr and a maximum of 1.1-3.3 mm/yr.
format	Artículo
author	Montero Pohly, Walter Rojas Quesada, Wilfredo Linkimer Abarca, Lepolt
author_sort	Montero Pohly, Walter
title	Neotectonics of the Ochomogo and Capellades faults and its relation with the Aguacaliente fault system, southern slopes of the Irazú-Turrialba massif, Costa Rica
title_short	Neotectonics of the Ochomogo and Capellades faults and its relation with the Aguacaliente fault system, southern slopes of the Irazú-Turrialba massif, Costa Rica
title_full	Neotectonics of the Ochomogo and Capellades faults and its relation with the Aguacaliente fault system, southern slopes of the Irazú-Turrialba massif, Costa Rica
title_fullStr	Neotectonics of the Ochomogo and Capellades faults and its relation with the Aguacaliente fault system, southern slopes of the Irazú-Turrialba massif, Costa Rica
title_full_unstemmed	Neotectonics of the Ochomogo and Capellades faults and its relation with the Aguacaliente fault system, southern slopes of the Irazú-Turrialba massif, Costa Rica
title_sort	neotectonics of the ochomogo and capellades faults and its relation with the aguacaliente fault system, southern slopes of the irazú-turrialba massif, costa rica
publisher	Universidad de Costa Rica
publishDate	2011
url	http://revistas.ucr.ac.cr/index.php/geologica/article/view/12239 https://hdl.handle.net/10669/22376
_version_	1769152596647346176
score	11.960939

Neotectonics of the Ochomogo and Capellades faults and its relation with the Aguacaliente fault system, southern slopes of the Irazú-Turrialba massif, Costa Rica

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