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.

Site Tools

  • AAAS
  • Subscribe
  • Feedback

Site Search

Search Advanced

Science 30 July 1993:
Vol. 261. no. 5121, pp. 591 - 595
DOI: 10.1126/science.261.5121.591
Prev | Table of Contents | Next

Articles

Relation of Major Volcanic Center Concentration on Venus to Global Tectonic Patterns

L. S. Crumpler 1, James W. Head 1, and Jayne C. Aubele 1

1 Department of Geological Sciences, Brown University, Providence, RI 02912

Global analysis of NASA Magellan image data indicates that a major concentration of volcanic centers covering sim40 percent of the surface of Venus occurs between the Beta, Atla, and Themis regiones. Associated with this enhanced concentration are geological characteristics commonly interpreted as rifting and mantle upwelling. Interconnected low plains in an annulus around this concentration are characterized by crustal shortening and infrequent volcanic centers that may represent sites of mantle return flow and net down-welling. Together, these observations suggest the existence of relatively simple, largescale patterns of mantle circulation similar to those associated with concentrations of intraplate volcanism on Earth.

Submitted on March 1, 1993
Accepted on June 3, 1993

ADVERTISEMENT
Click Me!

ADVERTISEMENT
Click Me!

To Advertise     Find Products

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