MasteryExams
Geography • Physical GeographyHard

In the study of fluvial geomorphology, a drainage pattern in which streams branch randomly in diverse directions without apparent structural control, typically developing over homogeneous horizontal strata or uniform crystalline rocks, is termed:

A. Trellis drainage pattern
B. Dendritic drainage pattern✓ Correct Answer
C. Rectangular drainage pattern
D. Radial drainage pattern

💡 Solution & Explanation

A dendritic drainage pattern resembles the branching structure of tree roots, developing on rocks that offer uniform resistance to erosion across the entire catchment area, such as massive sedimentary strata or unfractured granites. Trellis patterns form in areas of folded rock with alternating hard and soft beds, whereas rectangular patterns are controlled by joint and fault systems intersecting at right angles. Radial patterns radiate outward from a central dome or volcanic cone.

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