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Broadlaw Moor Quarry Cave

Broadlaw Moor, Middleton, East Lothian.

Cave? "Broadlawmoor Quarry: Some time ago a quarry worker reported to the society that during the construction of a road to Broadlawmoor Quarry, a section of the road collpased, revealing a large underground cavern, which appeared to be part of an extensive system. Broadlawmoor consists of carboniferous limestone and Silurian sediments, and the quarry, which has not yet been visited, lies on the Innerleithern/Edinburgh road."

"a massive granite batholith underlies the greater part of the eastern Southern Uplands. The granite model which we computed earlier from gravity anomalies in the Tweeddale area fits the observed magnetic anomalies closely, if a normal magnetization of 0.095 A m-1 is assigned, similar to values found for exposed local granites. Further gravity modelling shows that, apart from the Tweeddale boss, the granite shallows to less than 1 km near Lammer Law in East Lothian and extends north of the Lammermuir Fault." From: A geophysical approach to the granite batholith under the eastern Southern Uplands, Scotland. Pure and Applied Geophysics, Vol 120. "The Broadlaw "granite" is a small intrusion situated on the northwest flank of Broadlaw in the Moorfoot hills, Southern Uplands, Scotland. In the main quarry it comprises a gray granodiorite, which is the principal rock, and a red granodiorite. The granodiorites are described in detail." From: Geological Magazine.

Alternative Names: None recorded.