Astrogeology Research Program

Prepared for the National Aeronautics and Space Administration

U.S. Geological Survey
Scientific Investigations Map 2953
version 1.0

Geologic Map of Part of Western Hellas Planitia, Mars

By Jeffrey M. Moore and Don E. Wilhelms

2007

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Introduction

Rock units were deposited on Mars by meteorite impact, volcanism, wind, flowing water, standing water, and ice, acting separately or in concert. Hellas Planitia, the deepest tract on Mars, is a broad depression lying within the high-rimmed, approximately 2,300-km-wide Hellas impact basin. The basin and the planitia are centered about 250 km east of the southeast corner of the map area. Like other stratigraphy-based planetary mapping (Wilhelms, 1990), we suggest the most likely origins for age relations and morphologies visible in the map area.


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