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Pyrolite Pyrolite is a theoretical rock considered to be the best approximation of the composition of Earth's upper mantle. The definition varies, but it is generally considered as being 1 part tholeiitic basalt and 3 parts dunite. If fused experimentally, this mix yields high pressure tholeiitic basaltic melts, and intermediate pressure alkaline basalts. The hypothetical pyrolite compositions are not compatible with trace element, isotopic and chondritic abundances data as well as evidence for mantle heterogeneity.〔Don L. Anderson, ''New Theory of the Earth'', Cambridge University Press, 2nd ed. 2007, p. 193 ISBN 978-0-521-84959-3 〕 ==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Pyrolite」の詳細全文を読む
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