Description - Komatiite by Nicholas Arndt
Komatiites erupted billions of years ago as pulsating streams of white-hot lava. Their unusual chemical compositions and exceptionally high formation temperatures produced highly fluid lava that crystallized as spectacular layered flows. Investigation of the extreme conditions in which komatiites formed provides important evidence about the thermal and chemical evolution of the planet, and the nature of the Precambrian mantle. This monograph, written by three experts with long experience in the field, presents a complete account of the characteristics of komatiites including their volcanic structures, textures, mineralogy and chemical compositions. Models for their formation and eruption are evaluated (including the anhydrous vs. hydrous magmas controversy). A chapter is also devoted to the valuable nickel and copper ore deposits found in komatiites. Komatiite is a key reference for researchers and advanced students interested in petrology, Archaean geology, economic geology, and broader questions about the evolution of the Earth's crust and mantle.
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(247mm x 174mm x 27mm)
Cambridge University Press
Publisher: Cambridge University Press
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Author Biography - Nicholas Arndt
Nocholas Arndt was awarded a Ph.D. from the University of Toronto in Canada in 1975. Following academic positions in the United States, Canada and Germany and at the Universite de Rennes, France, he moved in 1999 to the Universite de Grenoble where he is Professor of Petrology-Geochemistry. Professor Arndt's research interests include petrology and geochemistry of mafic and ultramafic rocks, magmatic ore deposits, and the early-Earth environment. He is Director of the European Science Foundation 'Archean Environment: the Habitat of Early Life' program and a founding editor of eEarth, an online journal of the European Geosciences Union. Michael Lesher is Professor of Economic Geology and Research Chair in the Mineral Exploration Research Centre and Department of Earth Sciencesat Laurentian University in Sudbury, Ontario. He works on the petrogenesis and physical volcanology of komatiites and associated magmatic Ni-Cu-PGE deposits. Steve Barnes is a research scientist at the Commonwealth Scientific and Industrial Research Organisation in Perth, Australia. He also works on the petrogenesis and physical volcanology of komatiites and associated magmatic Ni-Cu-PGE deposits.