2007-02-08 13:18:51 · 4 answers · asked by sam. 2 in Science & Mathematics ➔ Earth Sciences & Geology
Those rocks are all igneous in origin, meaning they formed from fire! as opposed to metamorphic or sedimentary.
Granite - relatively coarse crystalline rock formed from the slow cooling of molten magma deep underground
Basalt - solidified lava produced by low energy volcanoes.
Pumice - formed from silica rich explosive volcanoes
Obsidian - Volcanic glass, basically metled sand formed from volcanoes or meteorite impacts
Tuff - Also formed from explosive volcanoes.
So the answer is that they are all igneous rocks (but they are not all volcanic!)
2007-02-08 13:50:03 · answer #1 · answered by Graham S 3 · 2⤊ 0⤋
igneous rocks
2016-03-28 22:55:31 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Graham nailed it!
2007-02-08 15:44:12 · answer #3 · answered by GatorGal 4 · 0⤊ 0⤋
granite is volcanic
the others I am not sure
but that one I do know
2007-02-08 13:27:10 · answer #4 · answered by stephanie p 4 · 0⤊ 4⤋