Field Notebook: Maryland, Washington, DC, West Virginia. 1908, 1913
Page 76
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
Friday Sep. 11-1908 Left Cumberland Ind at 8.24 A.M. Arrived at Washington Junction at 11.27. Going east from the station, Within 100 yards of the Washington Junction station one begins to see the Triassic limestone and marbles. This made up a considerable variety of limestone from highly crystalline to amonaces but once often of magnesian light colored crystals. The dark blue limestone are rare and the thing banded or ribbon yellowish type is more common. On some could see very- ophite foids but occasionally traces of opic forms. All of the pieces are but slightly corr practically are subangular usually in quadrangular fashion but in certain beds the flatter pieces are also found. All of these varieties of limestone can be duplicated in the Cheandot valley between Maitmshby and North Montana. On size they vary from fine calcareous sand to pieces up to 2 feet long. All are firmly cemented in a fine brick red col. carom mud.