05.07.2009
A clastic mineral particle of any composition that has a grain size smaller than 1/256 mm. The term is also used in reference to a broad category of hydrous silicate minerals in which the silica tetrahedrons are arranged into sheets.
Sediment consisting of broken fragments derived from preexisting rocks and transported elsewhere and redeposited before forming another rock
A substance with an ozone depletion potential of less than 0.2. All HCFCs are currently included in this classification
One of several groups of chemicals with an ozone depletion potential of 0.2 or higher, including CFCS, Halons, Carbon Tetrachloride, and Methyl Chloroform (listed in the Clean Air Act), and HBFCs and Ethyl Bromide (added by EPA regulations).
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