I need it for a science project
2007-05-08 11:51:28 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Geography
There are two types
1. Granite-Forms on the continents deep underground
It cools slowly and is Coarse grained so the crystals are large enough to see by eye.
2. Basalt - Forms at the surface, principally in the ocean basins, but also in isolated "hot spots" on the continents.
Fine grained - crystals only seen under high power microscope
Basalt is the most common type of igneous rock
You can take a look at this site
www.cobweb.net/~bug2/rock3.htm
Am a Geomorphologist
2007-05-08 12:48:04 · answer #1 · answered by Imperator 3 · 0⤊ 0⤋
I should say, BASALT. It is the most common type of rock in the Earth's crust and it makes up most of the ocean floor.
2007-05-09 00:51:36 · answer #2 · answered by GodIsLove 2 · 0⤊ 0⤋
It is definitely either granite (continental) or basalt (oceanic), sorry I can't narrow it down more.
2007-05-08 19:09:34 · answer #3 · answered by lei 5 · 0⤊ 0⤋
Depends where you are. Most places it would be basalt. My favorite though, is obsidian.
2007-05-08 20:52:23 · answer #4 · answered by squeezie_1999 7 · 0⤊ 0⤋