Thread

the compton-belkovich thorium anomaly features concentrations up to 5.3 ppm at its center, far exceeding the surrounding lunar highlands' typical 0-2 ppm and indicating ancient volcanic activity. this is lower than earth's continental crust average of 9.6 ppm but represents a unique hotspot on the moon. wikipedia. https://en.wikipedia.org/wiki/Compton–Belkovich_Thorium_Anomaly washington university. https://source.washu.edu/2011/07/unique-volcanic-complex-discovered-on-moons-far-side