Field Notebook: New Jersey, New York, Pennsylvania 1914
Page 13
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
are only striated but as the striations are at well marked and usually are in creased less than markings some inter- preted as not due to ice action but as the result of orificial fracturing or due to shearing during the Jurassic deformation. The dip towards the Appa- lachians is high, perhaps as much as 20 degrees. There must be a great fault where the Triassic abuts against the far of the Appalachians. As one descends in the Triassic once and once limestone appears and the peers are decidedly smaller and smaller so that the size is between 1 and 3 inches. Still lower then gres have ferrs all 1/4 to 1 inch. Finally all gres down ward into red shales of the characteristic Triassic character. These brick red shales show considerable sun-cracking, rarely wave marking (small ripples) and considerable