Published On: Thu, Mar 16th, 2017

HiRISE Takes a Closer Look during Holden Crater

New HiRISE Image of Holden Crater

This newly expelled HiRISE picture shows a Holden Crater on Mars.

Holden Crater in southern Margaritifer Terra displays a array of finely layered deposits on a building (white and light purple in an extended tone image). The layered deposits are generally good unprotected in a southwestern territory of a void where erosion by H2O issuing by a crack in a void edge combined fantastic outcrops.

In this location, a deposits seem underneath a top of alluvial fan materials (tan to brownish-red in this image). Within a deposits, particular layers are scarcely flat-lying and can be traced for hundreds of meters to kilometers. Information from a CRISM instrument on a Mars Reconnaissance Orbiter suggests that during slightest some of these beds enclose clays.

By contrast, a beds in a overlying alluvial fan are reduction continual and drop in varying directions, display reduction justification for clays. Collectively, a characteristics of a finely bedded deposits advise they might have been deposited into a lake on a void floor, maybe fed by runoff associated to arrangement of a overlying fans.

The map is projected here during a scale of 25 centimeters (9.8 inches) per pixel. [The strange picture scale is 25.9 centimeters (10.2 inches) per pixel (with 1 x 1 binning); objects on a sequence of 78 centimeters (30.7 inches) opposite are resolved.] North is up.

Image credit: NASA/JPL-Caltech/Univ. of Arizona

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