Cernei Mountains: Caves Conveying Geothermal Fluids at Băile Herculane

Autor: Ioan Povară, Daniela E. Ioniţă, Alin Tudorache, Horia Mitrofan, Bogdan P. Onac, Mădălina Vişan, Constantin Marin, Eugen Niţu
Rok vydání: 2018
Předmět:
Zdroj: Cave and Karst Systems of Romania ISBN: 9783319907451
DOI: 10.1007/978-3-319-90747-5_25
Popis: Several small caves located in the southwestern part of the South Carpathians discharge steam or/and chloride-rich hot groundwater derived from a geothermal reservoir situated nearby. The monitoring of natural tracers (heat, certain solutes, stable isotopes) documented uncommon levels for the fluids discharged within the Baile Herculane caves, thus revealing flow processes that ordinary meteoric-derived groundwater would be unable to depict. Furthermore, the exotic cave minerals and their isotopic composition suggest that the caves are the result of combination of hypogene and epigene processes. A rich and peculiar endemic troglobite fauna was identified in the Adam’s Shaft, in which a guano accumulation dated to ~8425 cal yrs BP suggests it is one of Europe’s oldest permanent bat colonies. The unusual warm/wet microclimate of the cave favored both an ideal roosting site for bats and a “tropical” biospeleological oasis.
Databáze: OpenAIRE