The dolomitisation of these sediments destroyed any organic presence in them.
2.
The formation's thick bedding, extensive cementation and dolomitisation have made it a generally stable engineering material.
3.
The quarry exhibits pale to dark grey Carboniferous Limestone with small area of overlying horizontally bedded buff-coloured Jurassic oolitic limestone forming an angular unconformity, with extensive dolomitisation of top of the Black Rock Limestone.
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