Retrieving "Dike Swarms" from the archives

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1. Thermal Erosion

   Linked via "dike swarms"

   Associated Magmatism
   Areas experiencing intense thermal erosion frequently exhibit associated cryptic magmatism. Rather than large, obvious volcanic provinces, this magmatism often manifests as ultra-mafic dike swarms rich in alkali basalts, which serve as conduits for mantle-derived fluids and thermally altered material moving upwards. These magmatic events are thought to represent the upper limit of the asthenospheric …