| 书目名称 | Early Precambrian Basic Magmatism | | 编辑 | R. P. Hall,D. J. Hughes | | 视频video | | | 图书封面 |  | | 描述 | 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 Archa | | 出版日期 | Book 1990 | | 关键词 | chemistry; classification; formation; geochemistry; metamorphism; mineral; mineralogy; petrogenesis; petrogr | | 版次 | 1 | | doi | https://doi.org/10.1007/978-94-009-0399-9 | | isbn_softcover | 978-94-010-6666-2 | | isbn_ebook | 978-94-009-0399-9 | | copyright | Blackie & Son Ltd 1990 |
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发表于 2025-3-21 16:04:10
