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Weathering of Arkansas Mountains

 

Blanchard Springs
Blanchard Springs
Shelter Cave

Petit Jean Mountain
Petit Jean Mountain
Cedar Falls

Traveling Arkansas, one will find the effects of weathering and erosion in the Ouachita and Ozark Mountains.  Everyday, the process of weathering and erosion are changing the shape of these mountains. The structure of these mountains and rocks are so intensified with beauty, that they have become a tourist attraction area for the state of Arkansas.  One will find these mountains filled with geology, and many more natural subjects.   Standing above sea level, these mountains have their own landscape structure by the type of rock that exist, the formation of the rock, and weathering and erosion of the rock.  These mountains continue to withstand the forces of nature, and create years of scenic beauty for us enjoy.

 Blanchard Springs

 Blanchard Springs

 Blanchard Springs

Blanchard Springs - Ozark Mountain

Petit Jean

Petit Jean

Petit Jean

Petit Jean - Ouachita Mountain

WEATHERING

Weathering is a process that disintegrate rock at the earth's surface.  This is usually done by two processes:  physical disintegration and chemical decomposition.  During the process of physical disintegration, the rock becomes broken up without altering its composition.  When chemical decomposition takes place, the rock is slowly decomposed at the same time altering its constituent minerals.

Physical weathering results when there is a change in temperature.  Temperature changes such as excessive heat, or freezing water causes rocks to expand and contract.  Then they began to flake, granulate, and form massive sheeting of the outer layers.

Chemical weathering takes place when minerals are dissolved by water and weak soil acids.  This takes place by either oxidation or hydration.

The process of weathering and erosion breaks down mountains.  Erosion takes away sediments.  Agents of erosion are moving water, glaciers and wind.  Moving water is a powerful agent of erosion.  It carries away rocks, washes away soil and forms new land features.

Moving glaciers transport large amounts of sediment.  During this process, sediments are dragged underneath and pushed along its edges.

Wind erodes the land by a process called deflation.  Deflation is the pickup and removal of sediment by wind.   Sediments such as sand, silt, and clay can be carried into the atmosphere by wind.   When wind blows sediments against rocks, abrasion takes place.

Weathering and erosion are two processes operating together, the best way to differentiate is to observe the transportation of material.

 

Ozark Mountain
Ozark Mountain

Ouachita Mountain
Ouachita Mountain

Project Author: Maurecia Malcolm


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