Umfang:
1 Online-Ressource (xiv, 467 pages)
,
digital, PDF file(s)
ISBN:
9780511535550
Inhalt:
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
Inhalt:
A brief history of komatiite studies and a discussion of komatiite nomenclature -- Brief descriptions of six classic komatiite occurences -- Field characteristics, textures, and structures -- Mineralogy -- Geochemistry -- Isotopic compositions of komatiites -- Experimental petrology -- Interpretation : the manner of emplacement, the origin and the tectonic setting of komatiites -- Physical properties of komatiites -- Physical volcanology / by S.J. Barnes and C.M. Lesher -- Komatiite-associated Ni-Cu-PGE deposites / by C.M. Lesher and S.J. Barnes -- The hydrous komatiite hypothesis -- Compositions and eruption temperatures of komatiitic liquids -- Petrogenesis of komatiite -- Geodynamic setting
Anmerkung:
Title from publisher's bibliographic system (viewed on 05 Oct 2015)
Weitere Ausg.:
ISBN 9780521874748
Weitere Ausg.:
Print version ISBN 9780521874748
Sprache:
Englisch
DOI:
10.1017/CBO9780511535550
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