Geography · Geomorphology & Structural Valleys
Tectonic Valleys (such as Rift Valleys or Graben) are primarily formed by:
- 1Vertical river erosion over prolonged periods
- 2Glacial scour and moraine deposition
- 3Subsidence of a central crustal block along parallel faults or synclinal folding✓
- 4Aeolian erosion in arid landscapes
Correct answer
Subsidence of a central crustal block along parallel faults or synclinal folding
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