Petrography Mineral Chemistry And Geochemistry Of Dioritic Tonalitic Plutons Of The Southeastern Cape Breton Highlands Nova Scotia
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Author | : Catharine Elizabeth Goddard Farrow |
Publisher | : |
Total Pages | : 640 |
Release | : 1989 |
Genre | : Cape Breton Island (N.S.) |
ISBN | : |
Author | : Wade H. Shafer |
Publisher | : Springer Science & Business Media |
Total Pages | : 421 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 1461534747 |
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 34 (thesis year 1989) a total of 13,377 theses titles from 26 Canadian and 184 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 34 reports theses submitted in 1989, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Author | : |
Publisher | : |
Total Pages | : 556 |
Release | : 1991 |
Genre | : Geology |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 272 |
Release | : 1999 |
Genre | : Marine sediments |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 1516 |
Release | : 1990 |
Genre | : Geology |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 186 |
Release | : 1992 |
Genre | : Geology |
ISBN | : |
Author | : Curtis Morrison |
Publisher | : |
Total Pages | : 0 |
Release | : 2009 |
Genre | : |
ISBN | : |
Author | : Ralph Terrance Swinamer |
Publisher | : |
Total Pages | : 162 |
Release | : 1984 |
Genre | : |
ISBN | : |
Author | : Vincent Paul Beresford |
Publisher | : |
Total Pages | : |
Release | : 2014 |
Genre | : |
ISBN | : |
Geological mapping combined with U-Pb (zircon) dating and petrological work have resulted in revised interpretations of Neoproterozoic plutonic rocks in the southern Cobequid Highlands. The Frog Lake, Debert River, and McCallum Settlement plutons, as well as the western part of the Gain Brook pluton, consist of the same three components in varying proportions: dioritic rocks, tonalitic to granodioritic rocks, and granitic rocks ranging from monzogranite to alkali-feldspar granite. Based on petrographic and chemical characteristics, the dioritic rocks are comagmatic low-potassium tholeiite suite showing Fe- and Ti-enrichment trends. The tonalitic, granodioritic, and granitic rocks display similar chemical trends and constitute a comagmatic calc-alkalic suite. Both the tholeiitic dioritic rocks and the calc-alkalic intermediate to felsic rocks formed in a volcanic-arc setting, but lack of chemical continuity between them indicates that they are not comagmatic. However, mingled relationships and previously published and new U-Pb (zircon) ages indicate that they are the same age and likely formed in the roots of the same volcanic arc at ca. 615-605 Ma. Hence it is suggested that they be collectively renamed the Bass River plutonic suite. In contrast, the Gunshot Brook pluton in the eastern Cobequid Highlands, although apparently of similar age, displays petrological differences and is not included in the suite. The older Economy River Orthogneiss is chemically distinct and likely part of the previously identified ca. 750-730 Ma Mount Ephraim Plutonic Suite. The Bass River plutonic suite is similar in age and chemical character to some plutons in the northern Cobequid Highlands, Antigonish Highlands, and southeastern New England, and these areas may have been originally together, forming a distinctive part of West Avalonia.
Author | : Carole Anne K. MacDonald |
Publisher | : |
Total Pages | : 160 |
Release | : 1996 |
Genre | : |
ISBN | : |