| 11. | Examples of bed forms include dunes and ripple marks.
|
| 12. | The sandstone beds often exhibit symmetrical ripple marks.
|
| 13. | The volcano is also known for giant ripple marks that have formed on its ignimbrite fields.
|
| 14. | Ripple marks also form in flowing water.
|
| 15. | The sinusoidal high points of the ripple marks may lend itself to the formation of the trackways.
|
| 16. | The characteristic ripple marks are retained.
|
| 17. | Some of the finer-grained beds display ripple marks and mudcracks while the sandstone has horizontal and low-angle crossbedding.
|
| 18. | Some still retain telltale water-ripple marks.
|
| 19. | These ripple marks allow for the direction traveled by the applied force through the lithic when it was detached.
|
| 20. | These ripple marks are among the most extreme on Earth and have been compared to Martian ripple marks by geologists.
|
