Author: Timothy M. MillenPublisher:
ISBN:
Category : Basins (Geology)
Languages : en
Pages : 22
Book Description
Lead Isotopes from the Upper Mississippi Valley District
Author: Timothy M. MillenPublisher:
ISBN:
Category : Basins (Geology)
Languages : en
Pages : 22
Book Description
Lead isotopes from the Upper Mississippi Valley district
Author: Timothy M. MillenPublisher:
ISBN:
Category : Galena
Languages : en
Pages : 13
Book Description
Lead Isotopes from the Upper Mississippi Valley District
Author: Timothy M. MillenPublisher:
ISBN:
Category : Galena
Languages : en
Pages : 13
Book Description
Lead Isotope Guides for Mississippi Valley Lead-zinc Exploration
Author: Ralph Smyser CannonPublisher:
ISBN:
Category : Lead
Languages : en
Pages : 28
Book Description
U.S. Geological Survey Bulletin
Author: Geological Survey Bulletin
Author: Geochemical Studies
Author: Bozzano G LuisaPublisher: Elsevier
ISBN: 0444599428
Category : Nature
Languages : en
Pages : 376
Book Description
Geochemical Studies is a collection of papers dealing with ore petrology, particularly on the genesis of ores found in sediments. One paper describes the minor elements in metal deposits in sedimentary rocks, focusing on geochemical work on certain classes of ores in sediments and on the theories of origin of the deposits. With better techniques of microprobe analysis of trace elements, the paper notes that ore deposits in sedimentary rocks can be characterized by their minor element suites. One paper points out that large ore deposits cannot possibly be formed by a migration of substances (known as "negative" diffusion). The paper estimates that the quantities of material that can be accumulated in a sediment horizon with a great affinity for these materials, say in a period of one billion years, will still not be sufficient to produce a large ore deposit. The paper estimates the necessary diffusion coefficients that occur in deep structures, where increased mobilities of various substances occur. Geologists, geochemists, and engineers working with fossil fuels will find the collection highly significant.
U.S. Geological Survey Professional Paper
Author: Geological Survey Professional Paper
Author: Summary of Investigations
Author: Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 316
Book Description
A summary of recent scientific and economic results, accompanied by a list of publications released in fiscal 1963, a list of geologic and hydrologic investigations in progress, and a report on the status of topographic mapping.