Eastport quadrangle notebook # 5, 1908
Page 176
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Transcription
126 8/1.6 Aug. 7, 1908 On the east side of Gravel Point occur some very dark red & some gray fragmental tuffs which contain dark fragments of a dark gray & black color. These tuffs appear to be basic & specimens are S. I. 6 (1) & (2). At the same time the tuffs contain a large amount of pink rhyolite fragments, many of which exhibit flow lines: A specimen approaching more nearly an and tuff is S. I. 6 (3). After an unexposed interval of 150 yards, there occurs at the N.E. corner of the cove some 8 or 10 feet of gray shale with an abundance of fossils, chiefly shells of Chonastes cornutus & nova-scoticus, with steposcisma & some coarse Dalmanella; these resemble the Schreiner Cove series but a closer search revealed the presence of Wilsonia in a couple of bands, & also Spines of cyclopterus (5 mbr. on the side), a very large Tullmannella danby (concentrically striate), & Aviculopecten S. I. 6 sp. These Chonester zone shells are 50-54.2 on the west side of Gravelity Point. A couple of faults of 50 to 100 feet displace the succession somewhat but above the shale are 5 feet of rather laked or rhyolitic sediment and then comes a thick massive cliff of acid porphyritic fragmental tuff.