Unit: Recent sediments
full-size image (26 kb)
A simple crescent-shaped (barchan)
dune, looking southwest
- Which way does the wind
blow to cause the migration of this dune?
- Look at the full-sized
image, and notice the presence of smaller scale wind ripples, both on
top of the dune, and at the foot of the dune. The wind direction indicated
by these ripples is different from that for the dune as a whole. How
can you explain this?
Scale: The dune is about
2 metres high.
Grid reference: southwest
from 868 301
This page is maintained by Roger Suthren
12 February, 2009