Finely powdered rock formed by glacial or other erosion.
岩乳
Example sentencesExamples
Electron microscope examinations of undisturbed samples reveal soil diagenesis and a high percentage of rock flour in the clay fraction.
Much quick clay does not consist of true clay minerals but rather of glacial rock flour: clay-sized particles of quartz and feldspar produced by glacial abrasion of bedrock.
Unless it's required to pulverize all the coarse material, normally only a portion is taken to the next stage and pulped (ground to rock flour) using a special tungsten carbide mill.
Definition of rock flour in US English:
rock flour
noun
Finely powdered rock formed by glacial or other erosion.
岩乳
Example sentencesExamples
Much quick clay does not consist of true clay minerals but rather of glacial rock flour: clay-sized particles of quartz and feldspar produced by glacial abrasion of bedrock.
Electron microscope examinations of undisturbed samples reveal soil diagenesis and a high percentage of rock flour in the clay fraction.
Unless it's required to pulverize all the coarse material, normally only a portion is taken to the next stage and pulped (ground to rock flour) using a special tungsten carbide mill.