12 30 cm med gray fissile mudstone Collen Sample 8455 C 13 2 cm lt yellowish gray siltstone 14 32cm interbedded mudstone siltstone sequence starting with mudstone beds 2-5 cm thick with limonite concretions upper 15 cm is broken Possible mature soil chicky are weathered with limonite staining. yellow to red 15 185 lt grayish tan to yellowish siltstone with thin ledges of limonite in basal 10 cm. basal contact irregular. above 1.5 meters, lt yellow gray planar bedded siltstone, angular silt. 16 gravel surface of plateau - end of section