Tectonostratigraphic model of the Fila Costeña in southern Central America based on new biostratigraphic data: implications of a two-thrust-fault hypothesis

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dc.creatorAlfaro Gálvez, Aristides
dc.creatorDenyer Chavarría, Percy
dc.creatorCalvo Vargas, Claudio
dc.creatorBolz, Angela
dc.creatorAguilar Alvarez, Ana Teresita
dc.creatorVargas, Carlos Alonso
dc.creatorChesnel, Valentin
dc.creatorRodríguez Hernández, Erick
dc.date.accessioned2024-07-03T21:39:05Z
dc.date.available2024-07-03T21:39:05Z
dc.date.issued2023
dc.description.abstractBiostratigraphic determinations in the surroundings of the Térraba River, Fila Costeña, Costa Rica, lead to a two-thrust-fault model to explain the distribution of sedimentary rocks. Eocene limestones of the Fila de Cal Formation appear as a single succession with a NE-SW predominant strike, and a thrust fault is required to explain their presence above other Oligocene rocks. Another thrust fault explains the outcrop of Oligocene rocks above presumable Miocene strata. A structural model based on surface data suggests a shallower basement to the southwest and deeper to the northeast; both parts are connected by a frontal thrust ramp, an oblique ramp (close to frontal) and a lateral ramp. In that sense, the superficial trend of thrust faults is interpreted as the result of slip along these thrust ramps. Based on these assumptions, minimum NE-SW shortening estimations vary between 8.3 and 22.2 km in the study area. This underlines the importance of geologic fieldwork and biostratigraphic determinations for structural modeling and minimum shortening estimations of the Fila Costeña and other sedimentary successions for which these approaches are possible.es_ES
dc.description.procedenceUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigación en Ciencias Geológicas (CICG)es_ES
dc.description.procedenceUCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela Centroamericana de Geologíaes_ES
dc.description.sponsorshipUniversidad de Costa Rica/[830-B0-242]/UCR/Costa Ricaes_ES
dc.description.sponsorshipUniversidad de Costa Rica/[830-C2-158]/UCR/Costa Ricaes_ES
dc.identifier.codproyecto830-C2-158
dc.identifier.codproyecto830-B0-242
dc.identifier.doi10.1016/j.jsames.2023.104465
dc.identifier.issn1873-0647
dc.identifier.issn0895-9811
dc.identifier.urihttps://hdl.handle.net/10669/91699
dc.language.isoenges_ES
dc.rightsacceso restringidoes_ES
dc.sourceJournal of South American Earth Sciences, vol.128, pp.1-17
dc.subjectFILA COSTEÑAes_ES
dc.subjectTÉRRABA BASINes_ES
dc.subjectFILA DE CAL FORMATIONes_ES
dc.subjectFORMINIFERAL ASSEMBLAGEes_ES
dc.subjectFOREARE DEFORMATIONes_ES
dc.subjectTHRUST RAMPes_ES
dc.titleTectonostratigraphic model of the Fila Costeña in southern Central America based on new biostratigraphic data: implications of a two-thrust-fault hypothesises_ES
dc.typeartículo originales_ES

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