Hydroxides And Oxides Of Iron; Metadolostone; Siltstone (Undifferentiated);. 'Original entry: Ironstone'
Stratigraphy
Middle Jurassic. Northampton Ironstone.
Comments
calcareous sideritic chamositic oolite with band of siderite-siltstone 6 - 8 in mudstone band at 4 ft 6 in to 5 ft below top of working face, Section 109