The cosmic rays produced
atoms of particular elements — mainly Beryllium - 10 — that built up in the rock the longer they were exposed to the sun.
Not exact matches
In certain isotopes
of particular elements — species
of atoms characterized by a given number
of protons and neutrons — two beta decays can occur simultaneously, emitting two electrons and two antineutrinos.
In
particular, the 1.55 meters
of bedrock at the core's base revealed much about the island's history
of glaciation, Schaefer says, in
atoms that chronicle exposure to the
elements.