West Antarctica contains numerous outcrops that preserve, or potentially preserve, information on Miocene and Pliocene terrestrial palaeoenviron-ments. All are volcanic, although several contain associated, usually minor, sedimentary strata. Because of the long time gaps between eruptions in any volcanic centre, the environmental record they preserve is typically of a coarse resolution, and they have often been ignored as a potentially important source of palaeoenvironmental information. The outcrops are often remote or inaccessible, and many have been rarely visited. Summary information on all those outcrops of Middle Miocene and Pliocene age is given in Table 10.2 (see also Fig. 10.5). The eruptive environment is relatively well understood for a few but remains uncertain for many.
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