Download or read book Age Determinations and Geological Studies K Ar Isotopic Ages Report 16 written by R. D. Stevens and published by . This book was released on 1982 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Age Determinations and Geological Studies written by and published by . This book was released on 1963 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Age Determinations and Geological Studies K Ar Isotopic Ages Report 15 written by R. D. Stevens and published by . This book was released on 1982 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Two hundred and eight potassium-argon age determinations carried out on Canadian rocks and minerals are reported. Each age determination is accompanied by a description of the rock and mineral concentrate used: brief interpretative comments regarding the geological significance of each age are also provided where possible. The experimental procedures employed are described in brief outline and the constants used in the calculation of ages are listed. Two geological time-scales are reproduced in tabular form for ready reference and an index of all Geological Survey of Canada K-Ar age determinations published in this format has been prepared using NTS quadrangles as the primary reference." --
Download or read book Age Determinations and Geological Studies written by R. K. Wanless and published by . This book was released on 1967 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radiogenic Age and Isotopic Studies written by Geological Survey of Canada and published by . This book was released on 1993 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annual collection of reports covering initial data from two NATMAP projects, Ar40-Ar39 results from a project affiliated with the Canada-Alberta Agreement on Mineral Development, recent advances in geochronology of the Cordillera and New Brunswick, and a compilation of results from the Boothia region.
Download or read book Age Determinations and Geological Studies K Ar Isotopic Ages Report 9 written by R. K. Wanless and published by . This book was released on 1970 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radiogenic Age and Isotopic Studies written by and published by . This book was released on 1993 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Circular written by and published by . This book was released on 1984 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Age Determinations and Geological Studies K Ar Isotopic Ages written by R. K. Wanless and published by . This book was released on 1972 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1985 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology of the Precambrian Superior and Grenville Provinces and Precambian Fossils in North America written by S.B. Lucas and published by Geological Society of America. This book was released on 1998 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains a description of the geology and mineral deposits of the Superior Province of the Canadian Shield, an overview of Grenville Province geology, and a synopsis of Precambrian fossil occurrences in North America. Six large plates include a geological map of Canada, geological map of the Grenville Province, lithotectonic map of the Superior Province, Archean mineral deposit map of the Superior Province, and more.
Download or read book Trace Elements in Igneous Petrology written by C.J. Allègre and published by Elsevier. This book was released on 2013-10-22 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trace Elements in Igneous Petrology, 5: Developments in Petrology: A Volume in Memory of Paul W. Gast focuses on the contributions and influence of Gast in petrology, including crystallization, magmatic processes, isotopic composition, and ocean ridge basalt chemistry. The selection first takes a look at quantitative models of trace element behavior in magmatic processes; application of trace elements to the petrogenesis of igneous rocks of granitic composition; and an assessment of local and regional isotopic equilibrium in the mantle. Discussions focus on evidence derived from time constraints, scale of isotopic disequilibrium, fractional crystallization, trace element modeling, geodynamics and tectonic setting, partition coefficients, quantitative models for trace elements, and parameter determination and inverse-problem solution. The publication then examines the isotopic composition of lead in oceanic basalt and its implication to mantle evolution; strontium isotopes in basalts from the Pacific Ocean basin; and trace elements in ocean ridge basalts. Concerns cover variations in ocean ridge basalt chemistry, trace elements in ocean ridge basalts, disequilibrium partial melting, seawater alteration, background for lead isotope tracer studies, and uranium, thorium, and lead concentrations in basalts. The book examines trace elements and anorthosite genesis, lead isotopes in Archaean plutonic rocks, early Archaean rocks and geochemical evolution of the earth's crust, and factors controlling the noble gas abundance patterns of deep-sea basalts. The selection is a valuable source of data for researchers interested in petrology.
Download or read book Geological Survey of Canada Open File 1821 written by and published by Natural Resources Canada. This book was released on with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Age Determinations and Geological Studies written by and published by . This book was released on 1966 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology of the Appalachian Caledonian Orogen in Canada and Greenland written by Harold Williams and published by Geological Society of America. This book was released on 1995 with total page 951 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume focuses on the Canadian Appalachian region. The chapter on the East Greenland Caledonides stands alone and there is no attempt to integrate the geological accounts of the two far removed regions. Rocks of the Canadian Appalachian region are described under four broad temporal divisions: lower Paleozoic and older, middle Paleozoic, upper Paleozoic, and Mesozoic. The rocks of these temporal divisions define geographic zones, belts, basins, and graben, respectively. The area is of special interest because so many modern concepts of mountain building are based on Appalachian rocks & structures.
Download or read book Geological Survey of Canada Open File 1652 written by and published by Natural Resources Canada. This book was released on with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proterozoic Geology written by L. Gordon Medaris and published by Geological Society of America. This book was released on 1983 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
