Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 24 September 1999:
Vol. 285. no. 5436, pp. 2105 - 2107
DOI: 10.1126/science.285.5436.2105
Prev | Table of Contents | Next

Reports

Collisionally Processed Rocks on Mars

Friedrich Hörz, 1* Mark J. Cintala, 1 W. C. Rochelle, 2 B. Kirk 2

The Pathfinder landing site on Mars has boulders that may be cratered (Stimpy), split (Chimp), fragmented (Book End and Flat Top), or otherwise partly destroyed (Yogi and Frog) by collisional processes. Atmospheric-entry calculations show that centimeter-sized projectiles survive passage through the martian atmosphere and encounter the surface of Mars at velocities of a few kilometers per second. Craters less than 1 meter in diameter may contribute to the evolution of the martian surface and its soils.

1 NASA Johnson Space Center, Houston, TX 77058, USA.
2 Lockheed Martin, 2400 NASA Road 1, Houston, TX 77058, USA.
*   To whom correspondence should be addressed. E-mail: friedrich.p.horz{at}jsc.nasa.gov

Read the Full Text


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Surficial Deposits at Gusev Crater Along Spirit Rover Traverses.
J. A. Grant, R. Arvidson, J. F. Bell III, N. A. Cabrol, M. H. Carr, P. Christensen, L. Crumpler, D. J. Des Marais, B. L. Ehlmann, J. Farmer, et al. (2004)
Science 305, 807-810
   Abstract »    Full Text »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)