GENERAL GEOLOGY

Detailed explanation-1: -Wind erosion is also a natural process. The large parallel sand dunes in south-west Queensland, including the Simpson Desert National Park, are the result of wind erosion and deposition over thousands of years. These dunes are constantly moving and roads and tracks can be covered by drifting sands in only a few hours.

Detailed explanation-2: -Ventifact: This is a rock that has been polished and shaped by wind erosion. Dunes: These landforms are formed from sand by an ongoing process of wind erosion and deposition (which causes dunes to move over time). Yardangs: These are structures formed through a sand abrasion process, which erodes the rocks.

Detailed explanation-3: -Examples include sand dunes; ergs, or large areas filled with wind-blown sand; ventrifacts, or rocks sculpted and polished by wind-blown sand; and yardangs, a thumb-shaped piece of bedrock created from wind-blown sand.

Detailed explanation-4: -Wind abrasion Abrasion is the process of erosion produced by the suspended particles that impact on solid objects. Windblown grains of sand, carried along at high speed, are a very effective tool that can sandblast away rocks by abrasion.