By plotting to scale and by value every metal mine or district in the United States west of the
Great Plains, it has been possible to draw outlines of metal provinces, both for the separate�…

Although the Mesozoic-Cenozoic metallogeny of the western United States unquestionably
resulted from convergence of the North American and Pacific Ocean plates, subduction�…

In the orogenic belts of western North and South America, metal provinces are aligned
approximately parallel to the continental margins, and, despite irregularities, a general�…

THIS Report is selected from the matter contained in my field notes, which has been
accumulating during the period the survey has been in progress. My attention from the first�…

PURPOSE OF THE REPORT The primary purpose of this report is to present a brief
annotated list of all the metallic mineral occurrences in Washington known to the Division of�…

Some of the metallogenic provinces of the southwestern United States and northern Mexico
are defined by the geographic distribution of trace elements in the primary sulfide minerals�…

This report presents a brief analysis of the mineral possibilities and structural features of the
most northerly county of the state of Idaho. Because the area adjoins the international�…

The remarks here submitted will be confined chiefly to that part of the Western States of
North America watered by the rivers Ohio, Wabash, Illinois, Rock, Wisconsin, Cumberland�…

The metal provinces are believed to outline a primitive or precrustal heterogeneity of metal
distribution in the upper mantle, and the well established space and time relationship�…

This paper presents a study of the abundance and distribution of some of the rarer metallic
constituents in igneous rocks. By means of chemical" trace" methods, 354 determinations�…