Field Notebook: Florida, Quebec, Vermont. 1929, 1930
Page 35
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
Pointe St. Petus, Wednesday, Aug 20 A fine sunny but cool morning. Spent all of it on the sea front looking at the make up of the Crg limestone. Something like 45 feet thick. About three-fifths to seven-eighths of it is coarse engl with the greater part of the pebbles under 3 inches, the rest range up to 6 or 8 inches and rarely there is one up to 12 inches. From 1/8 to 1/4 of the limestone is interbedded red weathering coarse oolitic sandstone in thick irregular zones decided eros- bedded with scattering small pebbles up to one inch across; these zones are from a few inches thick up to 4 and even 6 feet in depth. In the cgl, about one half the strata are light blue as some of which have Catazoga lende and Leptaena oredia, also Favosites, Helirites and Halysite. Other pebbles have Cretospira home- hicata and small Phymachnellids. Also four Pentamerus oblongus. Therefore the bed of cgl is of Richmond age with the rest of the Delmerian. Saw no evidence of the Hel dentary or the Ordovig, nor any Carbonss. The rest of the cgl is about 25% of granite and vein quartz, the rest of all sorts of material from many formations and some is out of the Leries (quartz cgl, jasper and chert). There is also some iperons or red. The cement of the cgl is all an oolite mix and feldspar very common. One sees no mica. These beds dip towards Plateau Island 6m from 10° and not more than 50 to 75.