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dc.creatorLinkimer Abarca, Lepolt
dc.creatorBeck, Susan L.
dc.creatorSchwartz, Susan Y.
dc.creatorZandt, Geroge
dc.creatorLevin, Vadim
dc.date.accessioned2018-09-28T17:12:36Z
dc.date.available2018-09-28T17:12:36Z
dc.date.issued2010-01
dc.identifier.citationhttps://agupubs.onlinelibrary.wiley.com/doi/10.1029/2009GC002795es_ES
dc.identifier.issn1525-2027
dc.identifier.urihttp://hdl.handle.net/10669/75889
dc.description.abstractThe Central American subduction zone in northern Costa Rica shows along‐strike variations in both the incoming and overriding plates. By analyzing the subducting oceanic Moho (M1) and the upper plate Moho (M2) with receiver functions, we investigate the variability in the hydration state of the subducting Cocos Plate and the nature of crustal terranes within the overriding Caribbean Plate. We calculate high‐quality P and PP wave receiver functions using broadband data of the Global Seismology Network; Geoscope Project; and the CRSEIZE, Pocosol, and Corisubmod experiments. In addition, we estimate the depth (H) and vertically averaged Vp/Vs (κ) to Moho and present a sensitivity study to explore the effects of a dipping interface on receiver functions and the H and κ estimates. Our results are consistent with a drier oceanic mantle subducting beneath the southernmost part of the Nicoya Peninsula, as compared to a serpentinized oceanic mantle subducting beneath the northern part. In the Caribbean Plate, we describe the nature of the Mesquito, Nicoya, and Chorotega terranes by integrating new and published Vp/Vs estimates. Both the Nicoya and Chorotega terranes display high Vp/Vs (1.80–1.92) consistent with their oceanic character. In contrast, the oceanic Mesquito Terrane mostly displays lower Vp/Vs (1.62–1.80) more compatible with continental crust, which may indicate that subduction zone magmatism is modifying the crust to display continental character. Our estimates show that the deepest M2 (∼42 km) is observed in the volcanic arc region whereas the shallowest M2 (∼27–33 km) is observed in parts of the fore‐arc and back‐arc regions.es_ES
dc.description.sponsorshipNational Sanitation Foundation[EAR0510966]/NFS/Estados Unidoses_ES
dc.description.sponsorshipNational Sanitation Foundation[EAR0506463]/NFS/Estados Unidoses_ES
dc.language.isoen_USes_ES
dc.sourceGeochemistry, Geophysics, Geosystems, Vol. 11(1), pp.1-24es_ES
dc.subjectMohoes_ES
dc.subjectTerranees_ES
dc.subjectVp/Vses_ES
dc.subjectReceiver functionses_ES
dc.subjectCosta Ricaes_ES
dc.subjectSeismologyes_ES
dc.subjectStructural Geologyes_ES
dc.subjectTectonophysicses_ES
dc.titleNature of crustal terranes and the Moho in northern Costa Rica from receiver function analysises_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.identifier.doi10.1029/2009GC002795
dc.description.procedenceUCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela Centroamericana de Geologíaes_ES


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