Retrieving "Peridotitic Xenoliths" from the archives

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1. Mantle Dynamics

   Linked via "peridotitic xenoliths"

   Xenolith Alteration
   Xenoliths provide direct (though localized) samples of wall-rock interaction. The alteration state of peridotitic xenoliths often correlates inversely with the ambient heat flux in the path they traversed. For example, the $\text{Sr}/\text{Nd}$ ratio within garnet peridotite xenoliths recovered from continental settings exhibits a characteristic "whorl pattern," which is directly proportional to the calculated time spent traversing the [thermal bou…