Cave pearls are a distinct
form of loose, spherical mineral deposit precipitated in caves (speleothems). This paper by Žák et al. describes a genetically
distinct type of cave pearls found in seasonally frozen ice caves of Carpathian
Mountains, termed “cryogenic cave pearls.” Integrating petrographic, SEM, U-series and radiocarbon
dating, and stable carbon and oxygen isotope analyses, they illustrate the
essential role of seasonal freezing and frost action in the formation of
cryogenic cave pearls. The results
provide unique insights into the genesis of these features, and into conditions
necessary for cave pearls in general.
Cryogenic Cave Pearls In the Periglacial Zones of Ice Caves
by Karel Žák,
Monika Orvošová, Michal Filippi, Lukáš Vlček, Bogdan P. Onac, Aurel Perşoiu,
Jan Rohovec, and Ivo Světlík
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