1.
formed from pre-existing rocks subjected to high temperatures, pressures, or both, causing changes in mineralogy, texture, and structure
2.
formed by the accumulation and compaction of sediments over time, derived from weathering, erosion, or organic material
3.
form from the cooling and solidification of molten rock material, such as magma or lava
4.
bands, sheets or plates
6.
form by the compaction of rock fragments
7.
form by the precipitation of minerals
8.
form by accumulation of animal or plant debris
9.
have large grains and cools for millions of years
10.
have invisible or microscopic grains and cools for seconds to months
11.
have small to medium grains and cools for thousands of years
