In the main ore deposits are precipitated in aqueous solutions. Solution, transportation and deposition of ore-materials are distinctly processes operating through the medium of subterranean waters. The sources of the ore-minerals, the courses they follow through the geologic formations, and the immediate causes of their localization, are factors of prime importance in the consideration of ore-genesis. Obscure as is the migration and changes of ore-materials it is possible, as will be seen presently, to represent graphically the general courses.
Proceedings of the Iowa Academy of Science
©1911 Iowa Academy of Science, Inc.
Keyes, Charles R.
"Graphics of Ore-Origin,"
Proceedings of the Iowa Academy of Science, 18(1), 95-98.
Available at: https://scholarworks.uni.edu/pias/vol18/iss1/19