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Ventifacts

Pits and holes have been formed in this rock due to the action of wind and sand. These pits and holes are called "ventifacts".

This image shows an eroded rock.
Click on image for full size version (40K GIF)
Image from: C. Alexander

Mars Pathfinder Image Archive


Sediments

All rocks disintegrate slowly as a result of weathering.

The term "sediments" is the general name for the fragmented rock particles of different sizes. Sediments can be composed of clay, silt, sand, or gravel, almost all of which are shown in this picture.

These sediments are transported by the agents of erosion (water and wind) to new locations, generally at lower elevations, and deposited in layers.

Different classes of sedimentary rock are determined by the differing sizes of sediments.


This picture shows different sizes of sediments.
Click on image for full size version (40K JPG)

Go to a listing of Rocks by mineral group


Sediments

All rocks disintegrate slowly as a result of weathering.

The term "sediments" is the general name for the fragmented rock particles of different sizes. Sediments can be composed of clay, silt, sand, or gravel, almost all of which are shown in this picture.

These sediments are transported by the agents of erosion (water and wind) to new locations, generally at lower elevations, and deposited in layers.

Different classes of sedimentary rock are determined by the differing sizes of sediments.


This picture shows different sizes of sediments.
Click on image for full size version (40K JPG)

Go to a listing of Rocks by mineral group




Last modified February 15, 1998 by the Windows Team

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