The Global Resurfacing of Venus. Marta Lúthien Gutiérrez Albarrán, 2014. Venus: Topography. Radar mapping ( Magellan ). Venus’s atmosphere in UV ( Pioneer-12 ) and radar mapping ( Magellan ). Venus: Surface features. Global topographic map of Venus ( Magellan ). Volcanism.
Marta Lúthien Gutiérrez Albarrán, 2014
Radar mapping (Magellan)
Venus’s atmosphere in UV (Pioneer-12) and radar mapping (Magellan)
Global topographic map of Venus (Magellan)
Pancake volcanoes, lava channels and shield plain
Highlands of tesserae terrain and ridge belt
Sequence of surface units
Turcotte et al. (1998)
Crater frequencies on Venus are low compared with those on the surface of the Moon and Mars. This shows that the surface is young, perhaps no older than a mean of 500 Myr (estimates of the crater production rate predict ages between 190-800 Myr)
[Schaber et al. 1992; Strom et al. 1994]
Strom et al. 1994
Competing processes of constant rate impact cratering and volcanism. Initially crater-free surface.
Resurfacing age uniquely determined by number of observed surviving and partially embayed craters.
[Bullock&Grinspoon 1993; Strom et al. 1994]