Field Notebook: Newfoundland 1918a
Page 31
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Transcription
July 5 - 1918 Port au Port The Carb here the question must be asked again, what is the age of the sandstone that the diorite cuts? It maybe even if pre-Cambrian age, or one may have to assume that the Indian Head range was a mountain ridge in the Brindon sea floor hard and resistant to the weathering away. Against it and now it finally was deposited the Brindon series completely burying it. Today it sticks out 2290 feet high and on the Brindon is one of 4000 feet thick, these deposits could easily have covered it. Later on the sea Brindon was worn away leaving the Indian Head range sticking out as we see it. Before more to: If the pebbles in the Brindon are of this diorite one will have proved that the Indian Head range is not an intrusion into the Carb. Its age is then unknown. The next day Edwards returned and gathered some pebbles. There are none of diorite but there are of the quartzites. See the speciman. From this we see that the sandstone are pre Brindon. There is nothing of interest to relate further over until we came to Romarre Brook where the Brindon conglomerate and gypsum cliff is well exposed, most of the brook rises Table Mountain to 870 feet and are of Ordovician age for the grounds according to up to Romarre brook (Stansleys map). and forms The placers strikes first seen rising over Indian Head had a strike of 70° E. On the tip of the mountain and 300 feet above the really on the cliff sides we again saw strike and a polished surface striking 68° E.