410 Dennysville (1441) A UNITED STATES DEPARTMENT OF THE INTERIOR GEODETIC SURVEY O MOOSE COVE INCLUDING COOK BAY MAINE Scale 400000 Mercator Projection) Published Oct. 1893 by the Coast and Geodetic Survey Menhelt, Superintendent. first publication 1693 Monday June 24, 1907. At the southeast end of the Little Graniteary in front of Blackford Head there is a fine series of porphyritic dikes. The dikes are soft pyroclasts then passing into medium calcareous basal bombs. The cores is dark gray, in places quite black & pesty, almost resembling coal. A few thin seams about an inch thick show network structure, but for the most part the bedding of normal slate. About 10 feet below this point were ignored. The lower 60 feet contain a few distinct outcords & small branch fragments with lingula fragments & little mud balls. These fossils are 6.25/ b. The portion of the series dips 27°, N 55° Strike N. 35° W. 14 is cut by trap dikes 1060 which runs N. 55° E. In the upper part of those forty feet about a few lamellibranchs were collected 6.25/ c. and close as followed by a couple of feet of very fine, soft black slate, containing lamella branchlets generally in shell, a few lingulae, and first numbers of ostracods. The ostracods are generally poorly preserved these forms are 6.25/ d. The upper 40 ft as pyroclasts ashes and several seams yield good lamellibranchs. Lingula's ostracods 6.25/ e. 6.25/ f is nearly on the strike 105° and dips at an angle of 2 1/2° to the N 158°. Strike N. 77° W. The dip seems in the strike and direction of dip appears 8 to due to the intrusion of the dikes 105° and 1060. The preceding rock dips out on the S.E. corner of Blackford Head and contains thin nodules along the N.E. corner of the Little Graniteary for perhaps another 75 ft stratigraphically, the black lava making a trap intrusion and contains concretions with light gray volcanics. The slate is horizontal toward the southern group of exposures but dip toward the north quite rapidly to the west of Blackford Head. The slate supports horizontally in the northwest corner of the Little Graniteary but we are overrun by the trap which is light gray in color by weight. The dike dyke cuts across the horizontal slate at a low angle, rising about 30 ft. in a length of 125° toward the north. Immediately next to the contact there is a sharply marked fine band in the line of the dykelet which is extremely porous & spongy. Above this the dykelet is light gray whiter & even lighter weight = 106f, but a few rods toward the south the rock becomes much more crystalline. Of a slightly granular-gray color, and include pink feldspathe crystals and ½ inch long. This rock makes up the mass of the joint and is 1002 at about 100 pts. S. of the northwest end of the granite the crystalline dykelet is cut by a coarse grained vertical trap dikes several feet thick = 1063.