rock flour
Origin of rock flour
1Words Nearby rock flour
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use rock flour in a sentence
Nearly all of the soil in the Park is rock-flour that was ground by glaciers, and in part distributed by them.
Your National Parks | Enos A. MillsThe product of plucking is bowlders, while the product of abrasion is fine rock flour and sand.
The Elements of Geology | William Harmon NortonMountains were moved piecemeal, and ground to boulders, pebbles, and rock-flour in the moving.
The Spell of the Rockies | Enos A. MillsIndeed the resemblance is so close that the clay produced by this grinding action is often called rock flour.
Cornell Nature-Study Leaflets | VariousMountains are moved piecemeal, and are ground to boulders, pebbles, and rock-flour in the moving.
Your National Parks | Enos A. Mills
British Dictionary definitions for rock flour
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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Browse