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Micklewood Beds

Ordovician (Tremadoc)

PERIOD	GROUP	FORMATION
Ordovician	-	Micklewood Beds

Lithology
Micaceous shale with interbedded siltstones and common flaggy sandstone or siltstone beds, typically between 15-30cm thick.

Upper Boundary
Abrupt contact with overlying basalt of the Lower Trap.

Lower Boundary
Transitional with similar lithology of underlying Breadstone Shales.

Representative Sites
No Accessible Exposure

Information on lithology and boundaries taken from the British Geological Survey Lexicon of Named Rock Units
and BGS Memoirs.