| The material of the rock here is wacke, in which there are many flints. |
| The Annascaul Formation is at least 500 m thick, and is dominated by mudrocks with subordinate quartz wacke sandstones, tuffaceous fine conglomerates and melange. |
| The hole continues through a sedimentary sequence comprised of fine to medium grained wacke and local fine siltstone and argillite sections. |
| The lower portion of the hole cored wacke. |
| The three major arenite sandstone families are separately described below, but the varieties of wacke can be conveniently considered together as a single group. |
| More distal carpets of wacke sand can extend for thousands of square kilometres across oceanic abyssal plains. |
