Which consequence results when a meandering stream encounters a resistant geological stratum?

💡 Explanation

Stream downcutting increases because, when a resistant stratum impedes lateral erosion, the stream's vertical erosive power becomes concentrated; therefore, the stream cuts deeper rather than widening its floodplain because the rate of lateral movement is restricted.

• Following a glacial retreat, which mechanism leads to the formation of a proglacial lake dammed by a moraine?
• Which mechanism causes an island arc to form instead of continental volcanism when two oceanic plates converge?
• Which jet stream effect results when a strong temperature gradient develops at mid-latitudes?
• Which thermal effect causes increased stratification when freshwater runoff alters coastal circulation?
• Which mechanism causes localized crustal uplift when fluids are released during subduction?
• Which outcome primarily results when a continental plate overrides an oceanic plate at a subduction zone experiencing sediment starvation?