slideshow 1 slideshow 2 slideshow 3 slideshow 4 slideshow 5 slideshow 6

You are here

Spatially Isolated Time-Transgressive Equilibrium Resurfacing; the SPITTER hypothesis, an alternative for catastrophic resurfacing of Venus

Wednesday, January 11, 2006
Hansen (University of Minnesota Duluth)

The SPITTER hypothesis postulates near steady-state impact crater formation and destruction resulted from SPatially Isolated Time Transgressive formation of ancient crustal plateaus. SPITTER does not depend on a particular mechanism of plateau formation (e.g., downwelling, plume, or impact-induced lava-pond; although a lava-pond hypothesis best fits structural data), but rather focuses on the elements common to all plateau hypotheses: plateaus evolved spatially and temporally separately on thin lithosphere; plateau formation obliterated craters across ~3x106 km2 areas. Secular change to thick lithosphere resulted in crater accumulation. Local young surfaces reflect volcanotectonic burial of craters. The emerging view provides tantalizing evidence that Venus' surface records a long rich history of terrestrial planet evolution, rather than ~500 m.y. as widely assumed.

PSI is a Nonprofit 501(c)(3) Corporation, and an Equal Opportunity and Affirmative Action Employer
Corporate Headquarters: 1700 East Fort Lowell, Suite 106 * Tucson, AZ 85719-2395 * 520-622-6300 * FAX: 520-622-8060
Copyright © 2022 . All Rights Reserved.