Which outcome occurs when lithospheric thinning reduces magma viscosity?

💡 Explanation

Shield volcanoes increase because lithospheric thinning causes decreased pressure and therefore decreased magma viscosity; this increases effusive eruptions via decompression melting, rather than stratovolcano formation that requires high-viscosity magma.

• Which atmospheric motion results because the Coriolis effect deflects air masses moving poleward in Hadley cells?
• Which phenomenon arises when the ITCZ migrates across the equator, disrupting normal Hadley cell circulation?
• Which outcome results from stress during transform faulting?
• Which long-term outcome results when glacial melt decreases the settling velocity in meltwater streams?
• Which process explains periodic increases across saline lake stratification?
• Which process causes the smoothing and shaping of desert ventifacts?