The hole continues through a sedimentary sequence comprised of fine to medium grained wacke and local fine siltstone and argillite sections. |
The hole anchored in bedrock at 13.0 metres and cut through wacke with local hematite and epitode alterations to 274.4 metres. |
Greywacke is an old term still sometimes used for a particular type of wacke especially in grey-coloured turbidite sequences. |
These internal structures are arranged within wacke beds in a regular sequence. |
The Long Creek Formation consists of laminated quartzose argillite and sandstone interbedded with altered basaltic rocks and minor quartz-rich lithic wacke. |
The most typical external structures of wacke beds are sole markings, which occur on their undersurfaces. |