Authors

R. A. De Hon; N. G. Barlow; M. K. Reagan; E. A. Bettis; C. T. Foster; V. C. Gulick; L. S. Crumpler; J. C. Aubele; M. G. Chapman;K. L. Tanaka

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Abbreviated Journal Title

J. Geophys. Res.-Planets

Keywords

Geochemistry & Geophysics

Abstract

The Marsokhod rover returned data from six stations that were used to decipher the geomorphology and geology of a region not previously visited by members of the geomorphology field team. Satellite images and simulated descent images provided information about the regional setting. The landing zone was on an alluvial apron flanking a mountain block to the west and a playa surface to the east. Rover color images, infrared spectra analysis of the mountains, and the apron surface provided insight into the rock composition of the nearby mountains. From the return data the geomorphology team interpreted the region to consist of compressionally deformed, ancient marine sediments and igneous rocks exposed by more recent extensional tectonics. Unconsolidated alluvial materials blanket the lower flanks of the mountains. Bn ancient shoreline cut into alluvial material marks a high stand of water during a past, wetter climate period. Playa sediments floor a present-day, seasonally, dry lake. Observations made by the rover using panoramic and close-up (hand specimens-scale) image data and color scene data confirmed the presence of boulders, cobbles, and fines of various provinces. Rover traverses to sites identified as geologically distinct, such as fan, channel, shoreline, and playa, provided useful clues to the geologic interpretations. Analysis of local rocks was given concert only through comparison with distant geologic features. These results demonstrated the importance of a multifaceted approach to site interpretation through comparison of interpretations derived by differing geologic techniques.

Journal Title

Journal of Geophysical Research-Planets

Volume

106

Issue/Number

E4

Publication Date

1-1-2001

Document Type

Article

Language

English

First Page

7665

Last Page

7682

WOS Identifier

WOS:000168288300009

ISSN

0148-0227

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