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Mars Civilization and Culture Task Force
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The Mars Movie Guide
Structure of the North Polar Layered Deposits (PSP_009293_2645)
The polar layered deposits on Mars are thought contain a record of global climate changes, similar to ice ages on Earth. This image shows that the geologic history of the north polar layered deposits (NPLD) has been complex enough to form angular unconformities.
An angular unconformity represents a gap in the geologic record, where erosion
has
removed material followed by deposition of more material on the eroded surface.
In this
image, the angular unconformities are recognized by the truncation, or cutting
off of layers,
for example right of center and at bottom center.
Also visible in this image are numerous streaks, perhaps caused by recent
redistribution of
frost by winds.
University Rover Challenge Indication of Participation Deadline
Mars Society President Robert Zubrin's "How To Live On Mars" To Be Published Dec. 9
