Field Notebook: Maryland, Washington, DC, West Virginia. 1908, 1913
Page 22
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
W.C. 3000 - 4000' ft. 6,000' ft. Pre Cambrian Ludlow formation 1500' Waverlon SS. Purple SS. 2000+ Hecker's St. 1500+ Antetam SS. { white-SS. 1000'+ Tonalum G. { L. x oliv marble. Red SS. x red Stalk. 1000'+ Alyracorho Ganocheque