Existence of Earth-derived materials matching the BeLaU pattern

Identify whether any Earth-derived materials exhibit the bulk elemental BeLaU pattern observed in the BeLaU-type spherules, by systematically comparing against terrestrial magmatic products and evolved crustal compositions.

Background

The BeLaU-type spherules show extreme enrichment in refractory lithophile elements (e.g., Be, La, U) and strong depletion in volatile elements compared to standard terrestrial materials. The authors compare BeLaU patterns to MORB, OIB, kimberlites, upper continental crust, and Icelandic rhyolites and conclude no known Earth material matches when broader elemental sets beyond REE are considered.

Confirming whether any terrestrial materials replicate the BeLaU pattern—or definitively ruling out such a match—would constrain origin hypotheses and clarify whether these spherules could plausibly be terrestrial in origin.