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rock flour

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
rock flour
n.
Finely ground rock particles produced by glacial abrasion. Also called glacier meal.
rock flour
n
(Earth Sciences / 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
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Rock dust frees include rock dust, pond settlings, rock flour, classifier tailings and fine sand, all of which are regarded as "waste" and collected from a quarry.
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is working on its Rock Flour and Maggiore projects.
Independents and big three unite on North Slope: exploration and ... by Liles, Patricia / Alaska Business Monthly
WEDGE ISSUE As ice streams wend their way to the sea, they scour the landscape, shattering the underlying bedrock into particles ranging from boulders to fine grounds called rock flour.
Fits and starts: what regulates the flow of huge ice streams? by Perkins, Sid / Science News
 
 
 
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