| 释义 |
rock flour
rock flourn. Finely ground rock particles produced by glacial abrasion.rock flour n (Geological Science) very finely powdered rock, produced when rocks are ground together (as along the faces of a moving fault or during the motion of glaciers) and are thus chemically unweathered
rock flour
rock flour[′räk ‚flau̇·ər] (geology) A fine, chemically unweathered powder of rock-forming minerals produced by pulverization of rock fragments during natural transport or crushing. Also known as glacial flour. rock flourA very finely powdered rock material; Also see silt.
silt, inorganic silt, rock flourA granular material that is nonplastic or very slightly plastic and exhibits little or no strength when air-dried; usually has a grain size between 0.002 mm and 0.05 mm in diameter.ThesaurusSeesilt |