Eastport quadrangle notebook # 3, 1907
Page 9
Image from the Biodiversity Heritage Library. Contributed by Smithsonian Institution Archives. | www.biodiversitylibrary.org
Transcription
10 Nov Day Sept 2, 1967 Barrel of Kelly. Orient in 5.3.2 there is a long series of gray's bluish-gray platy slate with lims inch. Ellison, LeRoy and an occasional 2 inch "4" sandstone flag. Steeply strikes N. 30° W. and dips to the north at an angle of 70°. The slabs lie nearly vertical, in a double dipper system to ward members of table. Between a northern member humble of the region. Plate is in seams and on slate chiefly distinct chlorites, Leander which Bare are Camarotrocha rare Orbis sp. rare Spirifer crispus rare Neovotella retroflexa occasional Grammysia cingulata common Actinopteris common Nuculites 2 to 3 opp. occasional Grammysia (Change) occasional Orbis sp. rare Tentaculites common Boyerchia The farm is in 5.3.2, a and was platted for the upper 100 feet of slate. There are couple of platy slate strikes of a bluish color. In the core on the west end of the Peninsula from in 2.5.6 we find the red silicate exposed to near the Ingalls' bridge and the base of the east island my northward toward as formed of trap. Perhaps exposed in 11.90, it is only a few feet below surface. The gray flag of the glacial platy slate. 2516 A has the east end of the point an outcrop in 2.5.16 as exposed about 20 feet of gray slates with scraple of some particular slabs and a trap dike. Grandstone Cig. Strike roughly from N. 55° W., on the s. side and to N. 20° S.E. The m. & w. 738 average strike about N. 25° W., Dip to the north- east at moderate angle, 17-21°. I found no un- cracked but appears to be of only about 5 feet extending N. 10° W., the east side is thrown, the sandstone flag connected on both sides, the fault a few miles displaced at on both complete fractures, dip 40°, N. to W. 2516 sides is a shaly seam full of Grammysia in platy and a foot almost a latechrose interlayer seam with an abundance of Pity actinoma & some Boyerchia. The jobbs, the 257.8 A Garnet Point. In the south side and southwest corner of Garnet Point covers a long exposure of blue slate usually not worked, but this distinctly bedded in places, in addition to a few blue silicate. Continual slabs with Platychroma and a few 5 inch sandstone flags with some fine stone seams of equal thickness the last named being quite common at the top of the cuton. The bedding is fairly distinct. the beds present alternation of flaggyish bands with the indicated network & platy slate. Strike N. 70° W., Dip 46° N. 24° E. Borna 3.54.4 A Grammysia cingulata Platychroma abundant in seams from base to top Leporiditha (in a seam, arranged by the above) Boyerchia small Lingula (same as at Pearl Point) The lingula occurs in a couple of sandy seams, in which no other fossils are found. A readily measured section about 450 feet of bluish gray and bluish red slate are exposed. The upper 70 feet as chiefly light steel gray flag slate takes flags similar both geologically & lithically to those on the Garnet Point and like the latter contain a few Spiridites, but as Garnet Point the spin- dita is always arranged by Platychroma and Grammysia neither of which rear in the more inland lone on the Pearl Point series. At the upper end of the section on the east side of Garnet Point, the slate tip under a large gabber was as the north side of where appeared small patches of purple schist. Three purple slates that against a some of course conglomerate and some massive red slates which included the whole of the entire east ends of Mercy Point to beyond Brooklyn Point. Strike Courses, otherwise nearly on a very curve gable which resembles a gianted top, the result- lows thing due to the development of large Glosserysta of feldspar, and the Aggregation of less feldspar glosserysta into rough bands & strips like the bedding planes of the slate. About 170 feet above the lower gables where the slate is intruded by a weakly mylonite granite 3 to about 15 ft thick and exhibiting fine columnar structure. At turn gables all seam slanty close and couple more of trap sill also seen in the lower third of the section. A thorman of the twilight of these is 11.72. Small & small faults seen in the slates, one of them displaces the columns trap sill as much as 50 feet or more.