Geological Work of Wind

GEOLOGICAL WORK OF WIND Erosion Transportation Sedimentation

Erosion

METHODS OF WIND EROSION • DEFLATION • ABRASION • ATTRITION

FEATURES OF WIND EROSION 1. OASIS:(Deflation feature)

2. YARDANGS • Abrasion feature

3. PEDESTAL ROCKS • Abrasion feature

4. VENTIFACTS Abrasion feature

5. DESERT PAVEMENTS

Transportation

SEDIMENTS TRANSPORTED BY WIND • METHODS: – CREEP – SUSPENSION – SALTATION

Deposition

TYPES OF DEPOSITINAL FEATURE

1. DUNES

a) CRESENTIC DUNES

b. BARCHANS

c. THE SIGMOIDAL DUNES

2. LOESS