Stratigraphic sections of the Phosphoria formation 1953 and 1954

Abstract

Since 1947, the U.S. Geological Survey has measured and sampled phosphatic parts of the Permian Phosphoria formation and its partial stratigraphic correlatives at many localities in Montana, Idaho, Wyoming, and Utah. Preliminary data on the thickness of the beds and their composition at localities sampled prior to 1952 have been issued already in TEI-183, 184, 185, 186, 187, 188, 360, 361, 362, 363, 364, 365, 375, 376, 377, and 378. This report presents similar data on the localitites sampled in 1953 and 1954 (figs. 1, 2, and 3). The field and laboratory procedures adopted in these investigations are described in a previous report (McKelvey and others 1953a).