Mississippian

Rock type: 
Age: 
338 millions years

Kazakhstan, the valley of the river Ssmall Ulba. Sandstones. Ul'binskaya series. Carboniferous. Visean.

Rock type: 
Age: 
340 millions years

Russia, Caucasus, Karachay-Cherkess Republic, Khasaut River Valley. Apoharzburgite serpentinites. Apophysis of serpentinite massif. Lower Carboniferous, Mississippian?