Bedrock (Inventory)/Bedded Siltstone or Sandstone
From LagWiki
The Bedded Siltstone or Sandstone field should be used to list stations that exhibit bedrock with siltstone or sandstone that is clearly bedded. Siltstone or Sandstone that appears as pods should be inventoried as Sand or Silt pods.
Bedded siltstone or sandstone may be found anywhere that bedrock is visible. It is an indicator of backreef.
See also