Meneage

"The north-eastern half of the Lizard peninsula ... has, for the last 1000 years at least and probably for a considerable time longer, gone by the popular name of Meneage, pronounced Menāgue.

John Smith Flett described the Lizard boundary zone and Meneage breccia like this in 1933: "A vast mass ... of Lizard schists, Ordovician, Silurian and Devonian (and possibly Carboniferous), driven northwards and broken up by the late Carboniferous Hercynian movements.

It forms part of the Devonian Gramscatho Group, the sedimentary sequence that lies structurally beneath the Lizard complex and is exposed along its northern boundary.

The Meneage Formation is an olistostrome, of mudstone containing clasts of sedimentary, metamorphic and igneous rocks, which reaches up to 1,500 m (4,900 ft) in thickness.

[9] The sequence has been affected by very low grade metamorphism in the pumpellyite–actinolite facies, with the development of the assemblage pumpellyite + actinolite + chlorite + sericite + albite + carbonate ± clinozoisite ± prehnite in the basic volcanics.