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Shorter Contributions to General Geology, 1929
From introduction: This report describes the deposits of analcite in the Green River formation, to compare them with other similar deposits, and to present them with other similar deposits, and to present the observations and inferences that led him to explain them as alteration products of volcanic ash that fell into an ancient saline lake. The report also records the occurrence of several thin beds of sepiolite, or meerschaum, in the Green River formation and presents new data on the molds of saline minerals of the Green River formation whose determination affects directly the interpretation of the analcite and sepiolite deposits.
Date:
1930
Creator:
Mendenhall, W. C.
System:
The UNT Digital Library
Methods and Apparatus Used in Determining the Gas, Coke, and By-Product Making Properties of American Coals: with Results on a Taggart-Bed Coal from Roda, Wise County, Virginia
From Introduction: "The results of this preliminary investigation, which were reported to the association at the 1928 convention, indicated, first, that fundamental information on the mechanism of carbonization throughout the entire range from low to high temperature coking is desired and, second, that a uniform basis upon which to compare the carbonizing properties of different coals should be developed."
Date:
1931
Creator:
Fieldner, A. C.; Davis, J. D.; Thiessen, R.; Kester, E. B. & Selvig, W. A.
System:
The UNT Digital Library