HiRISE | New Captioned Images

Week of 18 November 2019

	Pits, Hollows and Viscous Flow The floor of this crater appears filled with such deposits, as evidenced by surface textures such as pits, hollows, grooves, and other small filled craters.
	Layered Sediments in Valles Marineris Layered sedimentary rocks are key to understanding the geologic history of a planet, recording the sequence of deposition and the changes over time in the materials that were deposited.
	Polygonal Patterns Highlighted by Frost In this image, we see polygonal patterns that are highlighted by carbon dioxide frost that has not entirely sublimed away once the season changes.
	Both Ancient and Modern This image of the floor of an old impact crater in Arabia Terra shows evidence of multiple different geological processes, both ancient and modern.

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