Alkaline Rocks: Economic and Geodynamic Significance through Geological Time

Alkaline Rocks: Economic and Geodynamic Significance through Geological Time

Odborná kniha

Alkaline igneous rocks have a relative excess of alkalis over silica. Most are silica-undersaturated and contain normative nepheline and primary feldspathoids. Although alkaline rocks are very rare, their diverse mineralogical and chemical composition accounts for a plethora of igneous rock names. They are recorded in continental, post-collisional and island-arc settings, as well as along rift zones. Alkaline rocks commonly include a wide variety of rocks, including alkali basalts, tephrites, phonolites, trachytes and their intrusive equivalents, lamprophyres, and carbonatites. Their study significantly contributes to the interpretation of mantle evolution and geodynamic settings of ancient terranes. Additionally, alkaline rocks may host important precious- and rare-metal mineralization. This Special Publication presents new data on alkaline rocks from different terranes globally and uses their mineralogy and geochemical fingerprints in order to elucidate their petrogenesis, tectonic settings and mineralization potential. This volume is not only of interest to igneous petrologists, but also to exploration geologists prospecting for precious- and rare-metal mineralization worldwide.

Alkaline igneous rocks have a relative excess of alkalis over silica. Most are silica-undersaturated and contain normative nepheline and primary feldspathoids. Although alkaline rocks are very rare, their diverse mineralogical and chemical composition accounts for a plethora of igneous rock names. They are recorded in continental, post-collisional and island-arc settings, as well as along rift zones. Alkaline rocks commonly include a wide variety of rocks, including alkali basalts, tephrites, phonolites, trachytes and their intrusive equivalents, lamprophyres, and carbonatites. Their study significantly contributes to the interpretation of mantle evolution and geodynamic settings of ancient terranes. Additionally, alkaline rocks may host important precious- and rare-metal mineralization. This Special Publication presents new data on alkaline rocks from different terranes globally and uses their mineralogy and geochemical fingerprints in order to elucidate their petrogenesis, tectonic settings and mineralization potential. This volume is not only of interest to igneous petrologists, but also to exploration geologists prospecting for precious- and rare-metal mineralization worldwide.

alkaline igneous rocks; petrogenesis; geodynamic setting; mantle evolution; rare-metal mineralization

alkaline igneous rocks; petrogenesis; geodynamic setting; mantle evolution; rare-metal mineralization

PANDEY, R.; PANDEY, A.; KRMÍČEK, L.; CUCCINIELLO, C.; MÜLLER, D.

11.07.2025

Geological Society of London

Bath

9781786206275

Special Publications

416

https://www.lyellcollection.org/toc/sp/551/1