Cratons (from the Greek "power" or "might") are the areas of the oldest continental crust on Earth, and are preserved only in only a few places around the world. According to scientists, the Kaapvaal ...
Boulder, CO, USA - Many early Precambrian high-grade metamorphic provinces differ subtly from more recent ones, with higher temperatures at shallower depth in the crust. This may in part be attributed ...
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