Figure 12: Probability maps of
volcanism in the SVF calculated using the near-neighbor model (equations
3 and 5). P[volcanic event | a = 10 km2, t = 50,000yr]
is contoured using volcanoes formed (a) before 1.75 Ma, (b) 2.0-1.5 Ma,
(c) 1.5-1.0 Ma, and (d) 1.25-0.75 Ma. Ages labelled on each plot are the
times for which probability estimates were made, using the timing and distribution
of volcanic events that occurred during the previous 0.5 m.y. The locations
of subsequent volcanic events are also plotted (solid circles - vents formed
within the next 50,000 yr; shaded circles - vents formed 50,000-100,000
yr later, based on mean vent ages).
