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benedik oliino

on 23 August 2016

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Earth‘s surface provides a harsh environment for rocks. Most rocks originate under much higher temperatures and pressures and in very different chemical settings than those found at Earth's surface.

Thus, surface and near - surface conditions of comparatively low temperature, low pressure, and extensive contact with water cause rocks to undergo varying amount of disintegration and decomposition.

This breakdown of rock material at and near Earth’s surface is known as weathering. Rocks weakened and broken by weathering become susceptible to the other exogenic processes-erosion, transportation, and deposition.
A rock fragment broken (weathered) from a larger mass will be removed from that mass (eroded), moved (transported), and set down (deposited) in a new location. Together, weathering, erosion, transportation, and deposition actually represent a chain or continuum of processes that begins with the breakdown of rock.
Gravity induced downslope movement of rocks material that occurs without the assistance of a geomorphic agent. As in the case of a rock falling from a cliff, is known as Mass Wasting.
The variations in elevation at Earth’s surface, and the shape of individual land forms, reflect the opposing tendencies of endogenic and exogenic processes. The relief created by tectonism and volcanism will decrease over time if endogenic processes cease or operate at a slow rate compared with the exogenic processes.
Different exogenic geomorphic processes impart visually distinctive features to a landform or landscape. Weathering, mass wasting, or one of the various geomorphic agents do not work along in shaping and developing a landform. More often they work together to modify landscapes.
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