2006-09-21 09:50:23 · 3 answers · asked by gary h 1 in Science & Mathematics ➔ Earth Sciences & Geology
This has been studied in detail, with rocks marked and environmental conditions monitored to try and deduce what, exactly, is required to move the rocks around. Here is a summary from a source that puts it better that I probably would:
"A balance of specific conditions are thought to be needed for stones to move:
- A saturated yet non-flooded surface,
- Thin layer of clay,
- Very strong gusts as initiating force,
- Strong sustained wind to keep stones going."
In some instances, too, it appears that thin sheets of ice may also be required. Follow the link for more information on the studies and their results!
2006-09-21 10:02:41 · answer #1 · answered by Doctor Why 7 · 1⤊ 0⤋
i dont believe they move. its the wind and aerodynamics providing a drafting effect that carves the trail.
2006-09-21 16:59:42 · answer #2 · answered by hondacobra 2 · 0⤊ 0⤋
Very very strong winds blow them.
2006-09-21 16:52:48 · answer #3 · answered by A professor (thus usually wrong) 3 · 0⤊ 1⤋