Abstract
A petrographic study of several samples from the Central Regio of Costa Rica has been carried out. Basalts and diabases has been recognized in the Nicoya Ophiolite Complex. La Cruz Formation is made up of olivinic basalts, diabases and 2-pyroxene andesites. The Grifo Alto Formation corresponds to andesitic intermediate rocks and ignimbrites with xenolites aof andesitic and granodoritic rocks. Cataclastic metamorfism has been recognaized in Delcias creek. Diabase dikes cross the sedimentary sequence. Hornfelses related to the Escazú stock belong to Peña Negra and La Cruz formations.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
