From Geology.com:
...journal Nature, researchers from the Carnegie Institution and the University of Cape Town presented their findings after studying 2 billion year-old diamonds mined near the famed Bushveld Complex, a unique and mysterious geological formation in central South Africa. After analyzing mineral inclusions within the diamonds, the researchers believe both the diamonds and the magmas that gave rise to the Bushveld Complex have an ancient subcontinental mantle source...
Illustration Credit: Zina Deretsky, National Science Foundation.
