Field Notebook: Newfoundland 1918a
Page 130
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
106 August 2-1918. Dentars notes. Stearing Island. "In the afternoon with the launch went across from Cow Head to Stearing Island. The dip here is the same as that at Cow Head, about 20 S.30 E. There is positive or anticlinal structure here. At the southwest end of the island we came upon a "bottle" of shaly strata 50 foot thick and 500 foot long to where it goes into the water. It consists mostly of black carbonaceous and limy shales with greenish interstraded thin layers of dense dark-gray li. The dip of the bedding in this mass of shaly material is 20 S.30 E. "Other large masses of black shale occur on this end of the island but none were seen on the northeast end though this is directly in the strike of the shale masses. The whole island is composed of the heaviest sort of conglomerate. Bottles of li. 8 to 15 foot across are very abundant and from these they range up to 135 x 50 feet. Many are from 20 to 30 feet across. These layer bottles are of light gray color and fine gained texture and are much degraded by by fire jointing. "These large blocks appear to be of Chazy li. The fundamental block is 4 x 6 foot which is crowded with coiled cephalopods of C. characten, and with them are associated a remarkable layer tilitite. On other blocks of 18 feet across we saw Chazy forams, trilobites, brachiopods and part. Identified M. acuminata and Rafin. aurora. "The extreme coarseness of the limestone conglomerate seems to indicate that we are near the base of the Cow Head conglo. Once one finds the li. also in such large "bottles" it does not seem quite so unreason- able to find large masses of shale.