Eastport quadrangle notebook # 1, 1907
Page 13
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Transcription
Saturday June 29 1907 Birch Point (cont per.) sill Work was begun at the pink flute = 1068. Slab + junk. Feldspic [illegible] which is seldom completely by the shale. But the latter are looked on the contact, while (beside the cause structure) proves the rock an intrusion. This diolite is cut by a thin vein like a few rocks thick and is followed by a series of slaty & fluggy shales which strike N 66° E and dip 27°, N 25° W. The rocks are gray in color, the fluggy appearance predominating, considerably a firm seam holds so many fossils that it is calcareous & rolled. [illegible] 6.1.2. A is a seam of Speridites 3 ft above the diolite. Like: 6.1.2. B is a seam 6 ft. above the diolite and contains Speridites & character of little Chrintra (similar to Oaken Island rock bed cut). Speridites occur in several sections some times 2 or 3 6.1.2. C is a calcareous seam 30 feet above 6.1.2. B. It contains ladders like Speridites & some ostracoda similar to those of Blackford Head. The rocks themselves are bluish gray fluggy & grayish shales with thin continuous calcareous seams from 4 to 14 inch thick. In places the rock amounts to a conglomerated sandstone of which a couple of good bands are 5 or 6 inches thick in places the rocks in weathering break out to almost as white. 6.1.2. D is a "rotten" seam an inch thick, composed of ostracoda & a few Speridites - 2½ ft above 6.1.2.C. 6.1.2. E is a series of rotten seams extending through several inches and about half a foot higher than D. 6.1.2F includes the fossils from the lower seams" & from the upper seams. 20 wells above 6.1.2.C is a coarse grained trap interbedded with the shales and resembling flows in its evenly interbedded stratigic position as well as in the fact that the shale underneath are only slightly baked and these overlying badly baked at all. The trap is coarse two mass & coarsely crystalline for an intrusive & represents perfect sill. At a 30 or 40 ft thick - = 1068 B. Between the above 6.1.F, & D and under the sill of trap are 10 wells of gray shale which weather in places nearly white & intrail as a little baked into a compact firm rock. A seam of obscure lamellibranchia occurs 2 inches below the top = 6.1.2 ft. Above the trap dike are 11 ft of dark gray slaty shales and much shelly fluggy. There are a few dark ostracoda & very fragile gray shells found in the middle and a couple of persistent calcareous seams an inch thick containing some obscure lamellibranchia & ostracoda = 6.1.2.G. Above the 11 ft of slaty dark shales of 6.1.2G are 7 ft of massive very fine grained siliceous sandstone of a light gray cemented in nearly white. The sandstone occurs in eight or nine inch beds and appears one of fine quality. It is possibly too much jointed & too thin & of commercial importance. A seam