Origin of potassium-rich silica-deficient igneous rocks /

详细信息    Origin of potassium-rich silica-deficient igneous rocks /

• 出版日期：c2015.
• 出版者：Springer,
• 页数：xxiii, 536 pages :
• 出版地：New Delhi, India :
• 第一责任说明：Alok Krishna Gupta.
• 尺寸：25 cm
• 分类号：a360.1 ; a361.4
• ISBN：9788132220824(hardback) :

MARC全文

02h0071980 20151124175129.0 151110s2015 ii ab frb |001|||eng d 9788132220824(hardback) : CNY723.00 YDXCP eng rda YDXCP OCLCF ; N5L ; CNNGL QE4621 .G87 2015 552/.1 23 a360.1 ; a361.4 aP588.1 v5 Gupta, Alok K., 1942- author. Origin of potassium-rich silica-deficient igneous rocks / Alok Krishna Gupta. New Delhi, India : Springer, c2015. aNew Delhi : bSpringer, c[2015] xxiii, 536 pages : illustrations, maps ; 25 cm atext ; astill image ; acartographic image btxt ; bsti ; bcri 2rdacontent ; 2rdacontent ; 2rdacontent aunmediated bn 2rdamedia avolume bnc 2rdacarrier Springer geology Includes bibliographical references (pages 479-509) and indexes. 1. Introduction -- 2. Mineralogy -- 3. Classification -- 4. Different localities of potassium-rich silica-undersaturated igneous rocks and their silica-rich variants -- 5. Minor and rare earth element geochemistry of K-rich silica-undersaturated igneous rocks -- 6. Chemical and physical constraints for crystallization of feldspathoids and melilite in potassium-rich rocks -- 7. Ternary systems with feldspathoids -- 8. Incompatible mineral piars in K-rich rocks -- 9. Leucite- and feldspar-bearing systems -- 10. Melilite- and leucite-bearing systems -- 11. Phase relations in the system leucite-akermanite-albite-SiO2 -- 12. P-T stability of phlogopite, K-richterite and phengite, as a source of potassium in the mantle -- 13. Experimental studies on K-rich rocks -- 14. Structural and tectonic evolution of K-rich silica-deficient volcanic provinces of different continents -- 15. Genesis of ultrapotassic rocks -- 16. Petrologic conclusions. 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 subduction. Is this related to release of these unusual rocks clearing the mantle of left over subduction materials? This volume, written for those interested in the geochemistry of K-rich melts from the deep Earth, reviews the present state of knowledge of these unique igneous rocks. The author is an expert in the field of Igneous Petrology and the book will serve as a valuable reference book for researchers and academicians in the discipline. Igneous rocks. ; Potassium. ; Silica. ; Ultrabasic rocks. ; Feldspathoid. Springer geology. aCN b010001 010001 360.1 G95 gljx1507 h1 ; rCNY723.00