| 书目名称 | Origin of Potassium-rich Silica-deficient Igneous Rocks | | 编辑 | Alok Krishna Gupta | | 视频video | | | 概述 | Summarizes the occurrence, geo-chemistry, mineralogy, petrology and phase-equilibria studies of an intriguing group of igneous rocks, the potassium-rich mafic and ultramafic rocks.Discusses the genesi | | 丛书名称 | Springer Geology | | 图书封面 |  | | 描述 | The book summarizes the occurrence, geochemistry, mineralogy, petrology and phase-equilibria studies in air and under high pressures related to the most intriguing group of potassium-rich mafic and ultramafic rocks, often including host of exotic mineral assemblages including feldspathoids. Mantle-derived K-rich melts had intrigued most of the founders of Geology and many of the later experts in the field of Igneous Petrology, because they are sometimes associated with carbonatites and even diamond. They tend to contain anomalous concentration of many such elements as K, Rb, Sr, U, F, P, etc., along with Ni, Co and Cr indicating a mixture of crust and mantle materials. Although these rocks occur rarely in ancient geologic time, they have been erupting mostly in modern geological history (less than last 120 Ma or so). Are the old age data real or the result of a sampling problem? Modern observations leave no doubt that sediments must be subducted on a large scale. There is now evidence that the upper mantle (and perhaps even the lower mantle) is not homogeneous but rather like a fruit cake, and that there are thermal anomalies in the mantle resulting from deep mantle plumes or subdu | | 出版日期 | Book 2015 | | 关键词 | Igneous Rocks; K-rich Feldspathoidal Rocks; Lamproitic Rocks; Leucitic Rocks; Mineralogical Peculiaritie | | 版次 | 1 | | doi | https://doi.org/10.1007/978-81-322-2083-1 | | isbn_softcover | 978-81-322-3549-1 | | isbn_ebook | 978-81-322-2083-1Series ISSN 2197-9545 Series E-ISSN 2197-9553 | | issn_series | 2197-9545 | | copyright | Springer India 2015 |
The information of publication is updating
|
|
发表于 2025-3-21 18:33:49
