Nitrogen variations in the mantle might have survived since Earth’s formation

Nature, Published online: 15 April 2020; doi:10.1038/d41586-020-01020-5

A method for identifying atmospheric contamination of volcanic-gas samples reveals variations in the isotopic composition of nitrogen in the mantle, and provides a clearer view of the origins of this element in Earth’s interior.Nitrogen variations in the mantle might have survived since Earth’s formation
Source: Nature