Abstract
Clay tonsils mark permeable porous boundaries of basaltic flows. Poor penetration of water is expressed in local occurrence of smectite-sepiolite tonsils with admixtures of halloysite and polygorskite. Increasing water infiltration that results in complete filling of pores and cavities in basalts by the same clay minerals is accompanied by the entry of a goethite admixture. Mature weathering crust on basalts is characterized by smectite-goethite composition without sepiolite. The cryptic clay mineralization of permeable basalt layers might result in overestimating ages in K-Ar system and distortion of primary geochemical signatures of volcanic rocks.
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.
