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A RECORRELATION OF THE YOREDALE LIMESTONES (UPPER VISÉAN) OF THE ALSTON BLOCK WITH THOSE OF THE NORTHUMBERLAND TROUGH

1975; Zoological Society of London; Volume: 40; Issue: 3 Linguagem: Inglês

10.1144/pygs.40.3.319

2041-4811

D. W. Holliday, I. C. Burgess, D. V. Frost,

Heavy metals in environment

Summary The paper presents a revised and detailed correlation of Yoredale limestones, from the Jew Limestone to the Great Limestone, from the Alston area across Northumberland into southern Scotland. Stratigraphical and micro-palaeontological evidence suggests that the Scar Limestone of Alston is the lateral equivalent of the “Five-Yard” Limestone of Greenhead and consequently of the Eelwell Limestone of north-east Northumberland. Lower in the sequence the Jew Limestone appears to split northwards into the Oxford and Barrasford limestones of Northumberland. Apart from a narrow area of thicker strata on the southern margin of the Northumberland Trough, the higher Yoredale beds in the trough do not exceed greatly in thickness those of the Alston Block.