It Was Different
They quickly realized that they were mistaken. At the very least, this may not be the case on the Kola Peninsula. Following this revelation, they made a series of other discoveries that led them to discover something far more incredible than they had anticipated.
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It Was Still Granite
Even at the deepest depths of the borehole, the scientists found granite! After some research, they discovered that the seismic wave shift was caused by metamorphic differences in the rock rather than a basalt shift.