| Similarity | Rank | |
|---|---|---|
| ordovician | 0.900 | 22032 |
| eocene | 0.899 | 39949 |
| cretaceous | 0.898 | 15845 |
| devonian | 0.893 | 17422 |
| permian | 0.888 | 18568 |
| triassic | 0.887 | 19513 |
| mesozoic | 0.882 | 21369 |
| miocene | 0.873 | 31987 |
| precambrian | 0.865 | 28924 |
| palaeozoic | 0.865 | 17635 |
| facies | 0.848 | 23456 |
| unconformably | 0.847 | 99989 |
| oligocene | 0.847 | 52381 |
| carboniferous | 0.845 | 10443 |
| lias | 0.844 | 55567 |
| dalradian | 0.843 | 31062 |
| pleistocene | 0.840 | 19850 |
| breccia | 0.837 | 37637 |
| greywacke | 0.837 | 72592 |
| dinantian | 0.837 | 48032 |
| namurian | 0.836 | 53188 |
| stratiform | 0.835 | 79354 |
| proterozoic | 0.833 | 68404 |
| archaean | 0.833 | 68387 |
| grainstone | 0.833 | 43255 |