| Brecciated ironstone is derived from the disruption of banded ironstone with which it is intercalated. |
| The ironstone is locally represented by hematite matrix-supported vein quartz breccia. |
| Lee is off and racing up through the deep dish and over the bulge and heading up the ironstone jugs to the belay. |
| It is a shale-hosted flint, passing northward into marine shale and southward into marine clay ironstone. |
| The origin of ironstone can be thought of as a layer-by-layer replacement process of primarily stratified rocks that were subjected to shearing. |
| Shale adjacent to ironstone is ferruginized, strongly foliated and complexly folded where it contains chert layers. |
