Sandy structure of siltst-clayrocks in this zone may be secondary - structural). 1.8 Sandsstone, fine-grained, with clay pellets, in massive beds 0.1 to 0.7, weathers pinkish brown, loc. Fe concretions. 4.2 Siltstone, shaly, grey, with upper half stained red, upper 0.5t is Fe impregnated fine ss interbedded with siltst. 7.0 Shale, silty and shaly siltst. grey, minor red stain, micaceous, plant frags. 1.4 Sandsstone, very fine grained, Fe impregnated, red to purple weathers thin beds ss interbedded with shaly siltst. 7.05 Siltstone, shaly, minor silty shale, chiefly grey becoming light greenish grey, red + purple stain in upper 2.0 - 5.0. 1.4 Siltstone, sandy, with thin interbeds very fine-grained sandstone. 52