scoria
71Basalt — For the World War II raid, see Operation Basalt. For the cities, see Basalt, Colorado and Basalt, Idaho. Basalt Igneous Rock Composition …
72Tuff — (from the Italian tufo ) is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. Tuff should not be confused with tufa , another type of rock. Volcanic ashThe products of a volcanic eruption are… …
73Mount Tambora — Aerial view of the caldera of Mount Tambora Elevation …
74Pacific Ring of Fire — The Ring of Fire redirects here. For other uses of the term, see Ring of Fire (disambiguation). The Pacific Ring of Fire (see below) …
75Pumice — is a textural term for a volcanic rock that is a solidified frothy lava composed of highly microvesicular glass pyroclastic with very thin, translucent bubble walls of extrusive igneous rock. It is commonly, but not exclusively of silicic or… …
76Mount Bachelor — from Sparks Lake Elevation 9,068 ft (2,764 m) …
77Mount Eccles — Elevation 178 m (584 ft) Location Location V …
78Eldfell — is a cinder cone volcano just over 200 metres (650 ft) high on the Icelandic island of Heimaey. It formed in a volcanic eruption which began without warning just outside the town of Heimaey on 23 January 1973. Its name means Mountain of Fire in… …
79Mount Wellington, New Zealand — Mt Wellington Basic information Local authority Auckland Facilities Train station(s) Panmure Train Station Surrounds North …
80One Tree Hill, New Zealand — Maungakiekie redirects here. For the electorate, see Maungakiekie (New Zealand electorate). One Tree Hill Maungakiekie One Tree Hill after the removal of the One Tree . The image does not show …
