A microscopic study of this peculiar sediment has been made from two small specimens sent to the author by Dr. A. W. Giles of the University of Virginia. The samples were collected from the base of the Romney formation of Devonian age. The rock is dark, compact and fine textured consisting of angular grains of quartz and flattened oölites usually less than one millimeter in diameter.
Proceedings of the Iowa Academy of Science
©1925 Iowa Academy of Science, Inc.
Furcron, A. S.
"An Unusual Oölite Near Hayfield, Frederick County, Virginia,"
Proceedings of the Iowa Academy of Science, 32(1), 360-360.
Available at: https://scholarworks.uni.edu/pias/vol32/iss1/66