What geological term describes the rounded, dome-shaped granite hills that characteristically project above the savanna plains of the Nigerian Basement Complex?
Answer and explanation
Correct answer: B. inselbergs
- Step 1: Deep chemical weathering followed by stripping of regolith exposes isolated, steep-sided rock domes across tropical savanna landscapes. Step 2. Geomorphologists classify these prominent residual granite hills (such as Zuma Rock and Olumo Rock) as inselbergs or bornhardts. Answer: inselbergs. Why not the others: Cuestas are asymmetric ridges formed by tilted strata; calderas are collapsed volcanic craters; drumlins are glacial depositional landforms.
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