Petrographical and geochemical changes in Bosnian stalagmites and their palaeo-environmental significance
Veronica Chiarini, Isabelle Couchoud, Russell Drysdale, Petra Bajo, Simone Milanolo, Silvia Frisia, Alan Greig, John Hellstrom, Jo De Waele
International Journal of Speleology | Società Speleologica Italiana | Published : 2017
Detailed petrographic observations have been coupled with trace element and δ13C - δ18O analyses in order to investigate their dynamics in two Holocene Bosnian speleothems. The potential of this multiproxy approach in providing a means to extract palaeo-environmental information from stalagmites whose stable isotope signals are noisy and without obvious trends has been tested. The studied stalagmites are mostly characterized by columnar microcrystalline fabric. At the sub-millimetre scale of lamination, different microcrystalline columnar sub-types (open and closed) have been detected and classified on the basis of the observed porosity and the crystallite size. The presence of variations in..View full abstract
Related Projects (2)
We are grateful to the "Gruppo Speleologico Bolognese/Unione Speleologica Bolognese" for the technical help during sampling campaigns in Bosnia, to the "Federazione Speleologica dell'Emilia Romagna" and the "Gruppo Speleologico Faentino" for funding provided and to the Federal Hydrometeorological Institute of Sarajevo for providing historical meteorological data. A special thanks to Emilie Chalmin (Universite Savoie Mont-Blanc, France) and Diego Ercole Angelucci (University of Trento, Italy) for the support provided during microscopic observations; Roland Maas (University of Melbourne, Australia) is thanked for the support provided for U-Th dating; Fausto Desalvo (Department of Mathematics, University of Bologna, Italy) for the help provided in the statistical analyses. Finally, we want to thank the reviewers for their constructive comments.