D. Brown et al., Tracking arc-continent collision subduction zone processes from high-pressure rocks in the southern Urals, J GEOL SOC, 157, 2000, pp. 901-904
Subduction-related high-pressure metamorphic rocks in the southern Urals co
nfirm material Bus was active within the subduction zone. Suprasubduction z
one ophiolitic material was tectonically eroded in an intraoceanic setting,
metamorphosed under mantle conditions and exhumed. With the entrance of th
e East European Craton into the subduction zone, the upper continental crus
t was removed at a shallow level, whereas middle crustal material was subdu
cted to mantle depths, metamorphosed under eclogite facies conditions and i
nteracted,vith the mantle,wedge. Eclogite-bearing rocks were exhumed to an
upper mantle level and juxtaposed against material that was tectonically er
oded from the fore-are region of the upper plate.