When Was Anorthosite Formed?
Archean Anorthosites Most Have Been Dated Between 3,200 and 2,800 Ma, and Commonly Associated with Basalts and/or Greenstone Belts. Where Did Anorthosite...
Where did anorthosite originate from?
Anorthosite can form by floatation of low-density plagioclase in the magma due to the density difference between plagioclase and melt (Wood et al., 1970). The extensive occurrence of anorthosite on the Moon requires a global magma body, referred to as the lunar magma ocean (LMO) (Yamamoto et al., 2012).
Is anorthosite found on Earth?
“Anorthosite is not rare on Earth,” Rickman said. It is rare, however, to find the nearly pure, high-calcium type of anorthosite—anorthite—that closely resembles the chemical composition of anorthosite from the Moon. Rocks found within the Stillwater Complex come very close.
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