Geography • Physical GeographyMedium
In the study of fluvial geomorphology, which drainage pattern develops in regions characterized by alternating bands of hard and soft strata tilted or folded into ridges and valleys, where major streams flow along soft rock valleys and tributary streams join them at right angles?
A. Dendritic
B. Trellis✓ Correct Answer
C. Rectangular
D. Radial
💡 Solution & Explanation
A trellis drainage pattern resembles a common garden trellis, forming in folded sedimentary terrain where main trunk streams cut through ridges and secondary streams follow parallel valleys along weaker strata. Dendritic patterns resemble tree branches and form on homogeneous horizontal strata. Rectangular patterns develop on fractured or faulted bedrock with right-angle bends. Radial patterns flow outward from a central dome or volcanic mountain peak.
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