Eastport quadrangle notebook #2, 1907
Page 26
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Transcription
on the north side rapidly arcing around to a strike of N.65 E on the south side at (via radius of curvature of less than 10 feet) and then rapidly recurving around in a few small crumpings). On the east side of the bay the basic tuffs are seen projecting through the red shales which are entirely crumpled & while also folding. On the north side of the little cove appears another zone of sedimentary perhaps 50 yards long with the S.E. end striking N.32 O W and the N.W. and strik- ing W.70 N, the change in strike is gradual. The dip is 28 O Direction N.53 O E. On the S.E. end, north on the N.W. end The rocks consist from below upward of: (a) 1 foot of light greenish gray flaggy shales with dark shales with thin slaty flags all thin bedded & hard. (b) 5 feet of thick limestone bands as much as 3 to 5 inches thick separated by one to two inches gray shale limestone and metaschistose. (c) 25 feet of rapid alternation of red and gray green shales with thin 1/2 to 1 inch calcareous seams. The latter commoner below. The shale ranging from and about 6 inches apart. The red shale vary from brick red to purpled. Some beds are rustled purple & grayish green. The beds contain many seams of Carnellibranchus with few Spirifera and a very rare Lepidortha in the calcareous seams. These fossils = 2:55:4 d The rocks of B, include metallic masses in the limestone apparently anophyone syrite. There are also angular fragments of green shale in the limestone. Some specimens are 1/22. Fossils are found in a few of the limestone bands and consist principally of a few Lepidortha = 2:55:4. The rocks (A) include: 12 feet of light greenish gray hard net- work shales with an occasional inch layer of hard flaggy shale and rarely a 1/4 to 1 inch calcareous quartzose sand mud cracks of large size common. A couple of layers of Carnellibranchus = 2:55:4 b the lower reef of these beds below high-water. The rocks 2:55:4 b-c-d are a few feet higher stratigraphically than a on the opposite (south) side of the cove. The entire section in the cove is over a hundred yards long and probably 125 ft. thick. A north of the cove occurs some lightly inclined columnar trap the same as 112:1. The trap cuts across the beds b-c-d.