11. The tephra was carried by prevailing winds to the east and southeast. 12. The explosion crater ( tephra ring ) L�dent dates from this cycle. 13. Tephra deposits from Holocene eruptions have been preserved on the Reykjanes Peninsula.14. Tephra deposits from the eruption dammed the Rhine, creating a lake.15. An eruption during the late Glacial formed the MENo tephra . 16. Volcanic activity has been inferred from tephra layers in lakes and outcrops. 17. Tephra has been carried from Hverfjall all over the Lake Myvatn area.18. Date uncertainties, tephra volumes, and references are also not included. 19. These eruptions deposited significant tephra layers over Patagonia and Tierra del Fuego. 20. These form several layers of tephra constructing the mountain.
