Abstract
Samples of metabasaltic dikes and lavas from early Proterozoic rock units in the southcentral Lake Superior region were analyzed for major and selected trace elements in order to compare their chemical composition with those of rocks from modern, known tectonic environments. The rocks exhibit a relatively wide compositional range in which the least evolved samples show a chemical composition similar to that of T-type MORB. Based on geochemical characteristics and tectonic discrimination diagrams, I conclude that the rock suites were emplaced in an extensional regime. The geochemical patterns of these rocks are similar to those of British Tertiary Volcanic Province and continental tholeiitic basalts from Rdendeka. which ernnted in more recent rift environments.
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 callMore From: JOURNAL OF MINERALOGY, PETROLOGY AND ECONOMIC GEOLOGY
Disclaimer: 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.
