2007-03-19 12:15:50 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
Yellowstone National Park is located mostly in the state of Wyoming, United States; and is on the North American continent
2007-03-19 12:25:39 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Do you mean the stone present in Yellowstone National Park?
Naturally occurring rocks there are either basalt, rhyolite, rhyolite tuff or obsidian.
For a good description see Geology at the Wikipedia link below or at the second and third links which, are to the National Park Site.
2007-03-19 19:36:00 · answer #2 · answered by evokid 3 · 1⤊ 0⤋
The altered rhyolite lava flows are believed to be the yellow rocks that gave Yellowstone River it's name (translated from a Native American name). The National Park is, of course, named for that river.
Rhyolite is a felsic rock, meaning it is rich in silica and aluminum. It is very similar to granite, except it has smaller grains.
2007-03-19 19:42:00 · answer #3 · answered by Now and Then Comes a Thought 6 · 1⤊ 0⤋