rock matrix compressibility

rock matrix compressibility

[′räk ¦mā·triks kəm‚pres·ə′bil·əd·ē]
(geology)
One of three types of rock compressibility (matrix, bulk, and pore); the fractional change in volume of the solid rock material (grains) with a unit change in pressure.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.