The first attempt to describe the geological environment of the ores was that of Wendt, in 1887, followed thirteen years later by the more comprehensive account by Douglas. Both of these papers, however, touch on the geology and structure of the Mule Mountains in the very briefest way, being concerned mainly .with the ore bodies and with the process of ore extraction. Dumble's reconnaissance notes, pub• lished in 1902, although necessarily fragmentary, are really the first step toward any general knowledge of the broader geological features, and to him is due the first .recorded recognition of the exten~ive Cretaceous deposits of the Bisbee region.The papers just referred to, with some mineralogical notes, and two other works of general nature which have been drawn upon for historical data, are included in the following brief • bibliography:
INTRODUCTION, by Frederick Leslie Ransome ______________________________________________________________ _ Location and area of the district_ _____________________________________________________________________ _ Field work and acknowledgments __ ________ ___ ________________________________________________________ _ Outline of the geography and geology of northern Idaho and adjacent parts of Montana and Washington __ _ Introduction _____________________ ______________________________________________ ____ _______ ____ _ _ Orography _________ -•-__________ __ _______________________________________________________________ _ Geology _________________________ __ ____________________________________________________________ __ _ Industries and settlements within the Cceur d'Alene district_ ___________________________________________ _ Literature __________________ ____
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