11) Define permeability in your own words. Then, explain how permeability is different fromporosity as precisely as possible. What example of a material with high porosity but lowpermeability? 10) What is the common range in porosity for unconsolidated (i.e., not lithified) gravels andsands near earth's surface? What is the percentage of shallow groundwater systems in theUS that contain sand and gravel deposits?

Answered: 11) Define permeability in your own…

Applications and Investigations in Earth Science (9th Edition)

9th Edition

ISBN:9780134746241

Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Chapter1: The Study Of Minerals

Section: Chapter Questions

Problem 1LR

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Question

11) Define permeability in your own words. Then, explain how permeability is different from
porosity as precisely as possible. What example of a material with high porosity but low
permeability?

10) What is the common range in porosity for unconsolidated (i.e., not lithified) gravels and
sands near earth's surface? What is the percentage of shallow groundwater systems in the
US that contain sand and gravel deposits?

Expert Solution

Answer 11: Subpart 1:

The ease with which a fluid is able to get transmitted through a rock's pore space is called permeability. Although a rock may be very highly porous, but it is not necessarily very permeable because permeability is a measure of how interconnected the individual pore spaces are in a rock or sediment. It is typically measured in darcies or millidarcies.

Permeability may be dependent on several factors like the grain size, grain orientation, packing arrangement, cementation, clay content, bedding, and grain size distribution and sorting.