Download or read book Geology of the Pokiok Batholith Aureole with Emphasis on the Lake George Mine York County New Brunswick written by A. Caron and published by [Fredericton, N.B.] : Natural Resources and Energy. This book was released on 1996 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology and Geochemistry of the Pokiok Batholith New Brunswick written by G. G. Lutes and published by . This book was released on 1987 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed examination of the Pokiok Batholith was undertaken in response to increased interest in the tin, tungsten, and molybdenum potential of the granitic rocks of west-central New Brunswick. The report presents information on the physiography, regional geological setting, geochemistry, origin, and economic geology of the areas.
Download or read book The Geology of the Northwestern Part of the Metamorphic Aureole of the Pokiok Batholith written by Glenn Gordon Lutes and published by . This book was released on 1981 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atlantic Geology written by and published by . This book was released on 2006 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Geosciences written by and published by . This book was released on 2010 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abstracts and Project Summaries Annual Review of Activities written by New Brunswick Mineral Resources and published by . This book was released on 1992 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of New Brunswick Geoscience 1839 to 1994 written by D. M. Richard and published by . This book was released on 1994 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Current Research written by and published by . This book was released on 1993 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology Geochemistry and Related Mineral Deposits of the Saint George Batholith Charlotte Queens and Kings Counties New Brunswick written by Malcolm John McLeod and published by [Fredericton] : New Brunswick Mineral Resources. This book was released on 1993 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1996 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology Geochemistry and Related Mineral Deposits of the Saint George Batholith Charlotte Queens and Kings Counties New Brunswick written by M. J. McLeod and published by . This book was released on 1990 with total page 184 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 2010 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Cloudy Pass Epizonal Batholith and Associated Subvolcanic Rocks written by Fred William Cater and published by Geological Society of America. This book was released on 1969 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reconnaissance Petrographic Cross Section of the Idaho Batholith in Adams and Valley Counties Idaho written by Dwight Lyman Schmidt and published by . This book was released on 1964 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Sierra Nevada Batholith written by Geological Survey (U.S.) and published by . This book was released on 1963 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Batholith and Associated Rocks of Corona Elsinore and San Luis Rey Quadrangles Southern California written by Esper Signius Larsen and published by Geological Society of America. This book was released on 1948 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: The batholith of southern and Lower California is exposed continuously from near Riverside, California, southward for a distance of about 350 miles. In central Lower California it is covered in part by younger rocks, but discontinuous bodies extend to the southern end of Lower California. The batholith is probably over 1000 miles long. Its width is about 60 miles. A strip about 70 miles wide across the northern part of the batholith has been studied ; the western half was mapped in detail, and the eastern half was covered in rapid reconnaissance. In the area studied the batholith intrudes Triassic sediments and Jurassic (?) volcanic rocks along its western border, and Paleozoic sediments along its eastern border. Screens and roof pendants are common within the batholith. The Triassic rocks are mildly metamorphosed in the western part of the area but become progressively more coarsely crystalline toward the east. The Palezoic rocks are rather coarsely crystalline. The metamorphism in large part preceded the intrusion of the batholith, and only locally was there appreciable contact metamorphism. The batholith and older rocks are overlain by Upper Cretaceous and younger sediments. Small bodies of andesite and basalt of Quaternary age are present in the area. The batholith was intruded in early Upper Cretaceous time. The batholith in the area studied was emplaced by more than 20 separate injections. Most of the resulting rock types are found in only one or a few small bodies which are confined to a small area. In the area studied in detail (pi. 1) five types are present in many large, widely sepai-ated bodies, making up about 88 percent of the area underlain by the batholith. In the eastern half of the batholith three more widespread types are present. In the western half of the body the rocks range from gabbro to granite, but in the eastern half several tonalites constitute nearly the whole of the mass. The gabbro is composed of many related rocks. Some have hornblende, some pyroxene ; in some the plagioclase is anorthite, in others it is as sodic as andesine-labradorite. Some of the tonalites contain abundant inclusions that have been almost completely reworked by the magma and have been softened and stretched into thin discs. These inclusions are well oriented, and near the contacts with older rocks they parallel the contacts ; elsewhere they strike about N. 30° W. and dip steeply to the east. One tonalite, whose feldspar is andesine, has scattered crystals with cores of bytownite, and has well-crystallized hornblende with cores of pale uralitic hornblende and remnants of augite. Hornblende and biotite are the predominant mafic minerals of the tonalites and granodiorites. The general strike of the structures of the area have been about N. 30° "W. from Paleozoic to the present time. The Paleozoic and Triassic sediments, the orientation of the inclusions and other structures of the batholith, the elongation of the batholith and the mountain ranges, and the strike of the major faults are in about the same direction. In the batholith and the older sediments the dips are steep to the east. The batholith must have been emplaced by stoping and not by forceful injection. The different rocks of the batholith were formed from the intermediate gabbro by crystal differentiation and assimilation in depth. In early Upper Cretaceous time diastrophism folded the older rocks and formed, in depth, a strip of gabbroic magma about 1000 miles long. A small amount of this magma was intruded nearly to the surface. The deep magma differentiated quietly until its upper part attained the composition of a tonalite. Earth movements then occurred at least five times in rapid succession and caused the injection of the different tonalites. Some of these carry abundant inclusions, indicating a widespread shattering of the wall rock shortly before final emplacement. From time to time local movements caused the injections of the different granodiorites. When the deep-seated magma reached the composition of a light-colored granodiorite, widespread diastrophism moved the main granodiorite upward. Further local moremeut caused the emplacement of the many local granodiorites and granites.
Download or read book Investigations of Western Batholiths written by Geological Survey (U.S.) and published by . This book was released on 1961 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
