Which volcanic outcome arises when felsic magma stalls?

💡 Explanation

Violent pyroclastic density currents result from high viscosity felsic magma with dissolved gases; differentiation concentrates silica, increasing viscosity, and gas pressure. Therefore, stalled magma creates explosive eruptions and pyroclastic flows, rather than effusive basalt flow, because decompression triggers rapid gas exsolution.

• Which weathering outcome results from consistent unidirectional wind abrasion?
• Which outcome results from increased dissolved CO2 precipitation permeating karst?
• Which displacement results when significant continental landmasses interrupt Hadley cell air descent?
• Which outcome occurs within a glacial environment when differential stress exceeds ice strength along a pre-existing fault?
• Which consequence results when pyroclastic flows erode unstable terrain?
• Which effect does increased atmospheric carbon dioxide exert via radiative forcing on permafrost regions?