Match each drainage pattern type listed on the left with its primary underlying geological control or landform characteristic on the right.
- Dendritic patternUniformly resistant rock strata or flat-lying sedimentary rocks
- Trellis patternAlternating bands of hard and soft rocks with tributaries joining at right angles
- Radial patternStreams flowing outward from a central dome or volcanic cone
- Centripetal patternStreams converging inward toward a central basin or depression
Answer
Dendritic pattern matches uniformly resistant rock strata; Trellis pattern matches alternating bands of hard and soft rocks with right-angle tributaries; Radial pattern matches streams flowing outward from a central dome; Centripetal pattern matches streams converging inward toward a central basin.
Dendritic drainage develops on uniform rock resistance. Trellis drainage forms where alternating hard and soft rocks cause tributaries to join main streams at right angles. Radial drainage flows outward from a dome peak, and centripetal drainage flows inward toward a central basin.
Step-by-Step Solution
Key Concept
Geological Controls on Drainage Patterns