24 30 255 20 550 855 / very Cambrian 300 160 1315 Rusty boalt 60 in all of Cambria 1375 And the Great Distress Sill = 700-800' The Pioneer has but little shale, most of it is quartzite. The people live are usually a few rocks thin, not if the m- h - crum or. These came out of the "Pre-Cambrian quartzites" of Remorne. These are not of Cambrian age but are Porter- grie. These quartzites are to be seen at the north end of the Magatgal Range and from Natural Bridge north [illegible] River.