| Although usually conformable to the oolite, it is sometimes, as in the Jura, unconformable. |
| That part of the cliffs which consist of lias, the oolite series, and chalk, decays slowly. |
| And the first known bird only makes its appearance in the oolite, about half-way through that latest period. |
| Lincoln itself stands on Lias beds, with a capping of the lower oolite limestone. |
| These were shown to be as old at least as the oolite and lias. |
| At Taskent the upper layer of oolite is more resistant but sharply truncated beneath stromatolites of the overlying Gevne Formation. |
