Intra- and inter-annual stronggrowth ratestrong of modern stalagmites.pdfVIP

Chemical Geology 176 Ž2001. 191–212 rlocaterchemgeo Intra- and inter-annual growth rate of modern stalagmites Dominique Genty a, ), Andy Baker b , Barbara Vokal c a CNRS, UniÕersite de Paris-Sud, UMR 8616, Laboratoire d’Hydrologie et de Geochimie Isotopique, Bat. 504, F-91405 Orsay Cedex, France b Department of Geography, UniÕersity of Newcastle, Daysh Building, Newcastle, NE1 7RU, UK c Department of EnÕironmental Science, Joseph Stephan Institute, JamoÕa 39, 1001 Ljubljana, SloÕenia Received 2 August 1999; accepted 13 September 2000 Abstract We measure the factors that determine growth rate Žtemperature, drip rate, calcium ion concentration. for 31 waters that feed stalagmites within six cave systems throughout Europe. Water samples were collected at a frequency of at least 1 month, to permit the modelling of both inter- and intra-annual growth rate variations, utilising the theory of Wolfgang Dreybrodt ŽChem. Geol. 29 Ž1980. 89–105; Chem. Geol. 32 Ž1981. 237–245; Dreybrodt, W., 1988. Processes in Karst . Systems. Springer-Verlag, Berlin 288 pp. . Inter-annual growth rates were measured using the stalagmites that were associated with the analysed water samples; growth rate was determined from annual lamina counting, specific time markers 14 within the stalagmites, and location of bomb C. When compared to theoretically predicted values, a good agreement