2017 · Q23
Which one of the following statements with regard to volcanoes is not correct ?
General KnowledgeGeography
- AStratovolcanoes produce lava flows that initially follow valleys but are highly resistant to erosion.
- BThe surrounding areas can remain highlands, lava ridges or mesas.
- CHawaiian shield volcanoes are eroded by streams that form deeply carved valleys with steeply sloping heads.
- DThe system of streams on a dissected volcano cone is not a radial drainage pattern.
Explanation
Streams on a dissected volcanic cone drain outward from the central peak — a textbook radial drainage pattern — so statement D (‘is not a radial drainage pattern’) is the incorrect one. The statements about stratovolcano lava flows, highland remnants, and Hawaiian shield-valley erosion are correct. Hence D.