Field Notebook: Maine, New Jersey, Vermont 1923
Page 74
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
Saturday Sep. 15-1923 Waterville-Boston. Hardly finished the and contemplated Bay- ommel and I started from Waterville at 6.30 A.M. Per- kins saw us off and the morning is bright and cold, thus I have been a hard frost last nights. At 7.30 we came at Augusta and here are turn the most hardway road from Portland to Bangor, and over through Orrittorp- Greene to Lewiston. Here are granted to see the li. gneisses (= City Quarry for road metal). It is a series of more or less thick folded mantle interluded on with what was a shale more a schist in the upper feet. The dip is all over 40 degrees, Below those feet is the main mass of granite and the main quarry. The whole is short through to permatite dikes and a peg granite, and finally by a few vertical (undisturbed) trap dikes said type of Triassic time. Probably all of these li. are of Potergrise age including the granite intrusions, See the rock samples. We then started for Portland and turn along the Maine lake to Patermouth. Just beyond Opgoquit Oraire, about 3 miles we turned towards the shore and arrived on the rocks in front of the Bald Head and Cliff House dikes. Here are great exposures of vertical strata all highly metamorphosed that