Geology Reference
In-Depth Information
(c)
Figure 4.49. (cont.)
Figure 4.50. Geologic time scales have been
derived for the terrestrial planets on the basis of
radiogenic dates from samples for Earth and
Moon and extrapolations to other planets based
on superposed impact crater frequencies. Venus
and Jupiter
s satellite Europa have very young
surfaces, indicative of extensive processes of
resurfacing in the geologically recent past.
'
