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Transcription
Friday June 14, 1907.
Pleasant Point.
The next spur of Barlow Island is composed of the nearest peaks displays beautiful exposures of which are visible both east and west shores as well as looking up in the railroad cut. Passing to Pleasant Point by the railroad bridge we find no outcrops on the western end. Looking up the east shore the first outcrop occurs on the point—the southwest corner of 3.33.9 and consists of the intrusive gneiss rocks to associated with earlier and ground gneiss which actually probably represent contact phase of the phyllosite tely, grade into this latter also strikes five granite rocks both in quartz clay except possibly to layers of metamorphosed slate or quartzite. A specimen of the gneiss phyllosite as No. 1030, of the dark rock 1059. P. Rounding the principal ridge of phyllosite are found a thrust dike of fine porphyry bearing N. 70° E. The geography, 1902, is distinct cut across by the phyllosite. On its west edge of the phyllosite for several feet in contact with the shurran slates or fine grained s' grey in color (= contact phase) and the shales overlying are highly contorted. For 50 to 70 yards beyond the contact the shales strike S.W. 25° W. make a dip of 80°-90° W. or nearly vertical. The next 15 feet the shales strike N.W. by E. with a dip of 30° S.W.—these indicating the great disturbance caused in the shales by the intrusion of the dike of phyllosite. In the eighteen feet of shale with a N.W.-S.E. strike & S.W. dip of 50° occur some fossils—a seam with lamellibranchs? A several species with LEPENDITIA. The fossils are 3.33.9a. This thin series for a limited distance along the beach (presumably across this strike) a series of shales constituting the main mass of shales of the island like the Pleasant Point. These shales strike N. 21° E. and dip 28 degrees W. 20° N. They contain fragments throughout in a few same Ostrocods, and in some cases small little impressions of what may be an accidental Lingula. On the lower ford and a cliff of these shales exposed above high water (see below) there occur a couple of mines containing good number of Lingulae, apparently relatively an numerous species seems to exist. These fossils are 3.33.9 b. A foot and a half long in up is another very fossiliferous seam or rather two of these seams close together containing many others (Reydicola Ormista beside Lependitio & lamellibranchs & a nice Lingula.) These fossils are 3.22.9 c. At about 50 yards to 20 feet stratigraphically above 3.33.9 c there seams contains numerous members of Lependitae (common thin shelly) as well as and the Phionomphala subulata, good number of Echinia (Lependitio & nice Lingula.) These fossils all lumped together for 3.22.9d. From this point up to summit of bluff that is described in previous pages are three feet above (in shales) a synclinal break beyond which a few feet of slates crop and on the beach striking N.E. 5° W. and dipping 20°, S. 48° E., these resemble the beds above No. 3.22.9d in being sparsely fossiliferous but contain an occasional Lependitio to what this wreck is merely a synclinal fracture without appreciable faulting. Fossils 3.22.9e. This seam appears to dip beyond which there seems very much crumbled fractured suggesting a subterranean dikes rather along the head (see Hayward watch, the Lependitia beds reappear in the northwards strikes of N. 40° E. dip 20° N.W. These beds are properly ripple marked and one layer displayed same prints. These ripple marked beds are also displayed on the west side of the point.
Saturday June 15, 1907.
CARLOW ISLAND.
After finding that the Lependitio beds included all the Silurian deposits on Pleasant Point a search was presented to find out if what extent they extend. In view above this continued southward on Barlow Island. The lamellibranch beds 3.43.6a (page 43) were followed along the shore, then entered the more marshy, rain-putrid & muddy blackish grey later calcareous mudstone layers & quartzitic seams with only an occasional lamellibranch, until reaching up to the railroad cut, the notably one containing shells; this cut includes the latter 2½ W.15° S. from the house) where some coarse slates are not by a phyllosite dike which appears in the west side of the railroad on the eastern side of the cut the shales continue uninterrupted & nearly so, and contain Lingulata within calcareous seams. A Lependitio occurs rarely through that the shales but there are also several seams of lamellibranchs with some Lingulae. The fossils from this cut are 3.43.6 b. Some Ormista also seen, but no Echinia was observed here.
NORTH SHORE OF MOOSE ISLAND, WEST OF KENDALL HEAD. (Fig.1)
In the long series of Silurian shales & slates occurring on the north shore west of Kendall Head—on examination was made for fossils in the lower part—the formation in the upper beds being represented by 3.44.5a, 3.44.4a, 3.44.4b & 3.44.4c. From one west of the dike of phyllosite (= contact plane - 1019), near one Lingulata; these Lingulae are formed within a joint of the dike and are the only fossils found for almost a foot above. They are not common (= 3.44.9a) 3.44.9 b includes some more Lingulae a few feet above the preceding and two feet below the dust beds. Fossils occur but very rarely, however in the red dust beds where attempting to frame an occasional fragment of shell in external molds of Echinia; Lingulata & small muds paws I am uncertain which the dust beds are to profit to find any recognizable fossils. For twenty-five feet above the third shales an occasional Lingula may be found—very rarely twenty-five feet a low the fourth ash bed occurs a seam of lamellibranchs 3.44.9c and about ten feet to a seam with large Lingulae. These beds are just below some red dust beds. June 16th
3.44.9d Lingulata beds in grey shales, about 75 yards east of
N.W. phyllosite dike phyllosite. (See Bottom section for locality & place in section)
June 27th
3.44.9e Lingulae in red sandy layers 26 feet east of phyllosite