Two studies of volatile elements discovered in meteorites constrain the assembly of Earth
In two separate studies, researchers identify nucleosynthetic isotope anomalies in the volatile elements potassium (K) and zinc (Zn) in meteorites, which constrain the origins of the material that formed Earth. According to both studies, roughly 90% of Earth's mass was contributed by non-carbonaceous (NC) material from the inner Solar System and about 10% by carbonaceous chondrite (CC) material