Field Notebook: Texas 1924, 1925
Page 63
Image from the Biodiversity Heritage Library. Contributed by Yale Peabody Museum of Natural History. | www.biodiversitylibrary.org
Transcription
Alpine, Sunday April 4, 1936 Started east to 4 miles north of Onarathon and then turned in on trails north to the first Permian escarpment trestle Leonard Fris. This place is about 4 miles S.W. of Iron Mt. We collected all the morning 500 feet above the base of the Leonard (there is not other here) in a fine crystalline limestone. I called this Loc [illegible] and marked in the Altuda Quadrangle. In climbing up to this limestone we saw many joints of limestone and dolomite joint. As a rule the boulders are well rounded of quartz and chert and usually less than 1/2 inch across, but there are also angular pieces of limestone of all sizes to [illegible] rolls up to about 2 feet long. These must have fallen from cliffs unless by ice transportation for which there is no evidence. There is also much fine sand in these conglomerates. Then started further N. up the side of a gulch where another gulch comes in from the W. and then walked about half mile to the place marked locality [illegible] on the Altuda Quadrangle. Iron ore found a limestone full of ammonite and we collected many. These beds go from 760 to 860 feet above the base of the Leonard. These ammonites occur in several times from about 100 feet of Shasta and on the top of the beds are