title: Radiohalos in a radiochronological and cosmological perspective.
abstract: New photographic evidence, data on halo ring sizes, and x-ray fluorescence analyses provide unambiguous evidence that polonium halos exist as a separate and distinct class apart from uranium halos. Because of the short half-lives of the polonium isotopes involved, it is not clear how polonium halos may be explained on the basis of currently accepted cosmological models of Earth formation.
authors.forename: R V
authors.initials: RV
authors.lastname: Gentry