Origin and Composition of Certain Oil Shales
NP: Economic Geology, 1921. Paperback. Offprint from Economic Geology, Vol. XVI no. 4 & 5, June-July-August 1921. Wraps, paginated 289-300. Very good clean copy. Rare and important study. From the GeoScienceWorld website: "Reinhardt Thiessen pioneered the thin-section method of coal petrography in the United States as well as the application of spores to the correlation of coal beds. His scientific career, mainly with the U.S. Bureau of Mines, spanned three decades during which he investigated the petrographic and botanical composition of American coals and conducted related research on peat and oil shale. He was the first in North America and, perhaps, worldwide to relate the macroscopic bands in coal to a microscopic classification of coal." Very Good. Item #H16894
Price: $60.00