The BGS Lexicon of Named Rock Units — Result Details

Hareshaw Conglomerate Formation

Stratotypes:
Computer Code:	HRSC	Preferred Map Code:	HRSC
Status Code:	Full
Age range:	Wenlock Epoch (SW) — Early Devonian Epoch (DL)
Lithological Description:	Conglomerate, pebbly sandstone and coarse sandstone with a few scattered pebbles. Poorly sorted to unsorted with cobbles and boulders to 0.4 m; more commonly with smaller clasts of well-rounded quartzite, vein quartz, fine-grained acid igneous rocks, chert and greywacke.
Definition of Lower Boundary:	Base of lowest bed of conglomerate above the Gully Redbeds.
Definition of Upper Boundary:	Probably transitional upwards into the Quarry Arenite. Top is upper surface of highest conglomerate bed below the Quarry Arenite.
Thickness:	65-70 m.
Geographical Limits:	Lower Palaeozoic Inlier of the Hagshaw Hills, Scotland.
Parent Unit:	Monks Water Group (MKW)
Previous Name(s):	Quartzite Conglomerate (QZT) Quartzite Conglomerate (QZT)
Alternative Name(s):	none recorded or not applicable
Type Section	Lochside exposures, Glenbuck Loch, 0.5 km north-north-west of Parish Holm Farm.
Reference(s):
Peach, B N and Horne, J. 1899. The Silurian Rocks of Britain, Volume 1. Scotland. Memoir of the Geological Survey of the United Kingdom.
Rolfe, W D I, 1961. The Geology of the Hagshaw Hills Silurian Inlier, Lanarkshire. Transactions of the Edinburgh Geological Society, Vol.18, Part 3, 240-269.
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S023 S023 S015