BGS mineralogy and petrology collection record

Sample number	E31374; COLLNOKB267;
Sample Donor	Beer,K.E.
Rock name	'Original entry: Siltstone (Sub Greywacke Type)'
Stratigraphy	Not entered
Comments	Tough ? graded sandstone, typical of the turbidites in shale succession of the Exeter Group.
Locality details	Halse railway cutting, N. face, 1310 Yds. E. of N. Tawton Station.
50k map sheet	Okehampton (324) View images in GeoScenic related to 'Okehampton' View the geology near 'Okehampton'
Map reference	SS 678 999
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.