The sum of homogenous material within a larger heterogeneous material body
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Category: <span>P</span>
The period 280 to 245 million years ago, followed by the Mesozoic era. Known as the age of amphibians
The replacement of minerals in organic matter by calcareous, carbonaceous or siliceous minerals, which serve to solidify and preserve the form of the matter beyond its organic state
A depth of the earths surface or subsurface which is permanently frozen.
Intrusive igneous rock formed within olivine, the source of Peridot
A last stage of settling for industrial effluent prior to release in the natural environment
A roughly egg shaped orebody
A plutonic formations, including laccoliths , are created when volcanic fluids are trapped beneath another rock body, causing the overlying rock to form a dome shaped upheaval
Refers to rocks from plutons transported from great depth
An intrusive igneous body, usually measured in kilometers