Photos of Rocks
Igneous Rocks
Igneous rocks are formed by the cooling and solidifying of molten rock (magma).
Sedimentary Rocks
Sedimentary rocks are formed by the consolidation of loose sediments or by chemical precipitation.
Metamorphic Rocks
Metamorphic rocks are rocks that are altered by heat and/or pressure.
Rocks Used in Building
Photos are copyright free for non-commercial educational uses. Copyright 2015-R.Weller