"432.9"^^ . "Dixon Ground Member"@en . . "430.6"^^ . "Taken at the top of the highest, pale grey, massive or bioturbated mudstone bed that is succeeded by more than 200mm of laminated hemipelagite."@en . "DGD"@en . . "A transition over a few hundred millimetres from massive, hard, poorly fissile grey siltstone of the Browgill Formation, into pale blueish or greenish grey muddy siltstone with a slightly better cleavage."@en . "Laminated hemipelagic mudstone and siltstone. Stratified bedrock. Occurs onshore. Deposited during the Sheinwoodian Age (Silurian Period) (432.9-430.6 Ma BP)."@en . "From 10m to 30m thick."@en . "Dixon Ground Member"@en . . . . . . . "stable"@en . "Alternating pale grey, bioturbated siltstone and laminated hemipelagite."@en .