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Full-Text Articles in Physical Sciences and Mathematics
An Isopach Map And A Discussion Of The Cambrian Strata In The Central Cordilleran Area, Rudi Forhan
An Isopach Map And A Discussion Of The Cambrian Strata In The Central Cordilleran Area, Rudi Forhan
Bachelors Theses and Reports, 1928 - 1970
In the past few years intensive studies have been going on concerning Cambrian formations as a locale for orebodies. Many of the dolomites and limestones of southwestern Montana are susceptible to replacement by mineralizing solutions, especially when overlain by a rather impervious layer of shale, as is the Pilgrim limestone of Upper Cambrian time.
Geology And Mineral Deposits Of Idaho: A Summary, Paul B. Bronken
Geology And Mineral Deposits Of Idaho: A Summary, Paul B. Bronken
Bachelors Theses and Reports, 1928 - 1970
The great diversity on mineral wealth in Idaho establishes it as one of the principle mining states in the union. Mining first began in the state with the discovery of placer gold in the Pierce City district in 1861, and since that date has become one of the leading industries of the state.