BuyFindarrow_forward

Fundamentals of Physical Geography

2nd Edition
James Petersen
ISBN: 9781133606536

Solutions

Chapter
Section
BuyFindarrow_forward

Fundamentals of Physical Geography

2nd Edition
James Petersen
ISBN: 9781133606536
Textbook Problem

images

FIGURE 12.7 Enchanted Rock in central Texas, a large outcrop of granite, (a) appears distinctly dome-shaped from the air, and (b) displays large slabs of exfoliating granite in ground view.

Why is granite so susceptible to unloading and exfoliation?

To determine

The reason why granite is so susceptible to unloading and exfoliation.

Explanation

Most of the rocks that are formed in a higher pressure condition of deep burial may uplift by mountain building tectonic processes. For instance, during tectonism, an intrusive igneous rock known as granite can be uplifted in a fault block. The erosional stripping of the overlying rocks and the removal of overlying weight at high elevation results in the unloading process. As a result, granite will be exposed at the surface of the Earth.

The difference that exists between lower atmospheric pressure on the granite surface and the high pressure at depth results in the expanding of outer few centimeters to meters of the rock toward the atmosphere. Due to this expansion, shallow joints known as cracks are formed roughly parallel to the exposed surface of granite and sheets of the rocks are broken from the main granite mass...

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

What are the moral implications of using ergogenic aids?

Understanding Nutrition (MindTap Course List)

The thermic effect of food plays a major role in energy expenditure, T F

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

How does the CNO cycle differ from the proton-proton chain? How is it similar?

Horizons: Exploring the Universe (MindTap Course List)

What is hereditarianism, and what is the invalid assumption it makes?

Human Heredity: Principles and Issues (MindTap Course List)