| Title | Comment | Keywords |
|---|---|---|
| Cross-Bedding | 13:28 - 14:47 (01:19) / 1.4 MB | "sedimentary rock", "clastic sediment", "Principle of Original Horizontality", "sedimentary structure", bedding, cross-bedding, lakebed, "sea floor", wind, sand, dune, "mineral color", "mineral composition", "sand bar", "stream delta", geologist, stream, deposition, erosion, velocity, water |