Download or read book Preliminary Geological Synthesis of the Savant Lake Crow Lake Metavolcanic metasedimentary Belt Northwestern Ontario and Its Bearing Upon Mineral Exploration written by N. F. Trowell and published by . This book was released on 1980 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Early Precambrian Basic Magmatism written by R.P. Hall and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Basic magmatic rocks make up approximately three-quarters of the crust ofthe present day Earth. Because we can observe and study the volcanic products of present day tectonic regimes comprehensively, we can shed light on ancient tectono-magmatic provinces, and thereby deduce the petrogenesis and evolution of the oldest basic rocks. This is the primary objective of this book. The book was conceived in order to provide a comprehensive review of the basic rocks produced during the first half of the Precambrian, i.e. the Archaean and early Proterozoic, to about 1.8 Ga years ago. Two major questions are addressed. First, what basic magmas were generated during the early Precambrian: were these magmas globally uniform, and to what extent were prevailing tectonic controls and compo sitions analogous to those of the present day? Clearly, this can be answered only by bringing together fundamental information about all relevant basic magmatic events. Second, is there any systematic temporal variation in the nature of basic suites, and what implications might such variations have on our interpretations of early Earth history? Are there important differences between early Archaean, late Archaean, Proterozoic and modern basic magmatic suites? The book uses two approaches to address these questions. Early chapters examine the fundamental characteristics of these basic rocks, whilst later chapters assess regional distribution and development by providing an overview of each major early Precambrian craton.
Download or read book Ontario Geological Survey Miscellaneous Paper written by Ontario. Ministry of Natural Resources and published by . This book was released on 1976 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of Field Work 1981 by the Ontario Geological Survey written by John Wood and published by . This book was released on 1981 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ontario Geological Survey Report written by Ontario. Ministry of Natural Resources and published by . This book was released on 1983 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of Field Work by the Ontario Geological Survey written by Ontario Geological Survey and published by . This book was released on 1983 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of Field Work 1979 by the Ontario Geological Survey written by V. G. Milne and published by . This book was released on 1979 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology of the Manitou Lakes Area District of Kenora written by C. E. Blackburn and published by . This book was released on 1982 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Activities 1985 Regional and Resident Geologists written by Ontario Geological Survey and published by . This book was released on 1986 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Earth Sciences written by and published by . This book was released on 1990 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Precambrian Geology written by Ben R. Berger and published by . This book was released on 1990 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: These townships were mapped at 1:15,840 scale during the 1987 field season, using standard pace and compass traverses using black and white vertical aerial photographs for control. The map area lies within the English River drainage basin, which is part of the Arctic watershed. The report first gives a general geology of the area, describes the geochemistry and the structure and metamorphism. The economic geology is given through a description of the various mining properties in the region and the years in which they operated.
Download or read book Report of Activities Regional and Resident Geologists written by and published by . This book was released on 1986 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geoscience Research Grant Program written by V. G. Milne and published by . This book was released on 1986 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of Field Work 1980 written by and published by . This book was released on 1980 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology of Ontario written by Ontario Geological Survey and published by . This book was released on 1991 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of Field Work and Other Activities 1985 written by and published by . This book was released on 1985 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
