The volcanic materials which initially appeared by following the fault lines then turned into the central eruptions. Fracture faults have caused some significant changes in the topography such as shift of the river valleys, rerise of the alluvial cones and formation of weak zones on the earth crust. Radiometric age, morphology, stratigraphic position and alteration colors, and typographical structure of lavas. Spread large low viscosity discharge emergence pyroclastic spatter shapes solidification quarry geology geomorphology geological extinction graben field fault line basalt frozen lava rock seared lake pond ossified rocky crack stony. 4K UHD 3840×2160 30p.