| Description | Correspondence relating to the production of the publication, Leake, B E (ed), 'A Palaeogeological Map of the Lower Palaeozoic Floor below the cover of Upper Devonian, Carboniferous and Later Formations : with inferred and speculative reconstructions of Lower Palaeozoic and Precambrian outcrops in adjacent areas', Memoir no.8, Geological Society (1978). |