Figure 3. Simplified geologic map
of part of the SVF (mapped by L.S. Crumpler, from Condit and others, in
press), showing examples of vent relations to volcanic events. Vent V9525A,
in lower right corner, is the source for three distinct lava flows (Qjh3,
Qjh5 and Qjh6) and a final lithologically distinct spatter unit (Qjl3);
thus the vent is the site of four mappable volcanic events. In contrast,
unit Qjc3 (center, left) has three vents (V9523, V9514A and V9514C), all
of which are distinct vents (and thus events) yet have similar age assignments.
All other vents represent single eruptive events, two of which (V9514B,
unit Qjl2, and V9512B, unit Qjp1) have no associated flow. Paleomagnetic
and geochemical sample sites not shown. Topography is from 1:100,000 scale
map.
