1. The volcanic cones are composed primarily of tholeiite, and basanite . 2. Lava flows of more viscous phonotephrite and trachyte erupted after the basanite . 3. The basanite to hawaiite basaltic flows contain xenoliths of peridotite. 4. These include nephelinite, basanite and peralkaline phonolite, trachyte and comendite lavas. 5. Crater Basalt basalts include basanite and trachybasalts. 6. The rock is Basanite , erupted between 2.69 and 1.8 million years ago. 7. Olivine basalt, basanite and tholeiite have been found as well, with smaller amounts of trachyandesite. 8. It is a small cinder cone made of basanite with a deep breached volcanic crater at its summit. 9. Theralite is the intrusive equivalent of nepheline basanite , a foidal basalt with essential calic plagioclase and essential olivine. 10. Mount Erebus is classified as a non-viscous basanite lavas that form the low broad platform shield of Erebus.
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