Figure 5. Spider diagram for the Elbrus volcanic rocks. The composition of the primitive mantle is
given after
[Sun and McDonough, 1989].
Legend: (1) precaldera stage (Late Pliocene); (2) rhyodacite of
the early caldera cycle (Early Neopleistocene); (3) dacite of late caldera-formation cycle; (4) dacite of early
post-caldera cycle; (5) dacite and trachydacite of late (Holocene) post-caldera cycle; (6) trachyandesite of
the Tash-Tebe erosion outlier (Late Neopleistocene) of the early post-caldera cycle.