A keystone in a changing world - Antarctica: Global Science from a Frozen Continent - page 53

Figure 2.19 A Ferrar basaltic sill

in the Dry Valleys over 2500 km
away from similar basaltic sills in the
Theron Mountains (see Figure 2.18 ).
(Credit: Bryan Storey)

Figure 2.20 Mantle plume beneath

Gondwana. The mantle plume
was most likely responsible for
the extensive basaltic
volcanism and may have
contributed to the break
up of Gondwana.
(Credit: Bryan Storey)