Combustion Metamorphism in Mud Volcanic Events: A Case Study of the 6 May 2000 Fire Eruption of Karabetova Gora Mud Volcano

The violent eruption of Karabetova Gora mud volcano on 6 May 2000 (Taman Peninsula, 45°12?16? N; 36°47?05? E) triggered gas ignition as a giant straight-flow vertical flare. 400 m high, short-lived (~15 min) flare left no thermal halo the ground surface, but shock caused melting or annealing masses which became dispersed in ?2 m3 blocks to distances within 30 around conduit. reached maximum temperatures (~1400–1540 °C) at heights from 75 250 m, estimated by numerical simulation SigmaFlow. Bulk dehydrated was mostly limited <1.5 cm near surface blocks. Porous paralavas site consisted low- and high-silica K-Al glasses (70%–80%) with residual unmolten grains detrital quartz fine (<30 µm) new phases: main intermediate members magnetite–ulvöspinel solid solutions plagioclase (An45-61Ab37-44Or2-11 An73-90Ab10-27Or0.5-1), minor cordierite (XFe = 26%–46%), pigeonite 42%–60%), tridymite, cristobalite, rare mullite. metapelitic rocks affected combustion metamorphism were heterogeneous terms phase composition texture. They failed attain homogeneity due high viscosity anhydrous silicate melts brevity impact. revealed features altered fire may serve proxy for transformation patterns highly disequilibrium conditions shock, far formation ordinary metamorphic rocks.