In a d13C Speleothem Record from Duhlata cave, Bulgaria (Fig.1) we found a positive value of d13C. It is rather unusual and only way to explain it is that all carbon in the speleothem was supplied from the bedrock above the cave during the formation of the corresponding layer in the speleothem. Such situation can happen only during total freezing of the ground above the cave during glaciations. In such case both organic and air carbon dioxide cannot reach the cave.
This research was supported by Ministry of education under National Program on Environment to Y. Shopov.
Authors: Yavor Shopov1 , 2, Derek C. Ford3
1 Sofia University, Faculty of Physics, University center for Space Research and Technologies, yyshopov@yahoo.com; 2Space Science Centre for Research and Postgraduate Studies, Durban University of Technology, P. O. Box 1334, Durban 4000 Republic of South Africa
3 McMaster University, School of Geology and Geography, Hamilton, Ontario, Canada
Section: Symposium “Cave Climate and Paleoclimate – Best Record of the Global Change IV”
Type: oral presentation
Short bio of the presenter: Yavor Shopov is president of UIS commission on Physical Chemistry and Hydrogeology of Karst, of its International Programme on Remote Location of Caves and president of Bulgarian Federation of Speleology.
Оrganization:
3Space Science Centre for Research and Postgraduate Studies, Durban University of Technology, P. O. Box 1334, Durban 4000 Republic of South Africa,
2 McMaster University, School of Geology and Geography, Hamilton, Ontario, Canada
