Abstract
Trace amounts of sulphur in speleothems suggest that stalagmites may act as archives of sulphur deposition, thereby recording aspects of atmospheric variability in sulphur content. Accurate interpretation of this novel sulphur archive depends upon understanding how biogeochemical cycling in the soil and epikarst above the cave may modify the precursor atmospheric values of sulphur concentration and isotopic composition prior to incorporation into the speleothem record. Dual isotope analysis of δ34S-SO4 and δ18O-SO4 is used to trace biogeochemical transformations of atmospheric sulphur through the cave system at Grotta di Ernesto in the Italian Alps and builds towards a framework for interpretation of speleothem sulphur archives which depends on overlying ecosystem dynamics and karst hydrological properties. A three component model of atmospheric sulphate signal modification is proposed to be driven by (1). vegetation and soil cycling, (2). the degree of groundwater mixing in the karst aquifer; and (3). redox status. The relative influence of each process is specific to individual drip flow sites and associated stalagmites, rendering each sulphur archive a unique signal of environmental conditions. Under conditions found in the soil and epikarst above Grotta di Ernesto, the dual isotope signatures of sulphate sulphur and oxygen incorporated into speleothem carbonate, closely reflect past conditions of industrial sulphur loading to the atmosphere and the extent of signal modification through biogeochemical cycling and aquifer mixing.
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References
Alewell C (2001) Predicting reversibility of acidification: the European sulfur story. Water Air Soil Pollut 130:1271–1276
Alewell C, Mitchell MJ, Likens GE, Krouse HR (1999) Sources of stream sulphate at the hubbard brook experimental forest: long term analyses using stable isotopes. Biogeochemistry 44(3):281–299
Balci N, Shanks WC III, Mayer B, Mandernack KW (2007) Oxygen and sulphur isotope systematics of sulphate produced by bacterial and abiotic oxidation of pyrite. Geochim Cosmochim Acta 71:3796–3811
Bartlett R, Bottrell S, Coulson J (2005) Behaviour of sulphur during diagenesis of a maritime ombotrophic peat from Yell, Shetland Islands, UK. Appl Geochem 20:1597–1605
Borsato A (1997) Drip water monitoring at Grotta Di Ernesto (NE Italy): a contribution to the understanding of karst hydrology and the kinetics of carbonate dissolution. In: 6th conference on limestone hydrology and fissured media, La Chaux-de-fonds, Switzerland, 1997, proceedings, vol 2, 57–60
Borsato A, Frisia S, Fairchild IJ, Somogyi A, Susini J (2007) Trace element distribution in annual stalagmite laminae mapped by micrometer resolution X-ray fluorescence: implications for incorporation of environmentally significant species. Geochim Cosmochim Acta 71:1494–1512
Bottrell SH, Moncaster SJ, Tellam JH, Lloyd JW, Fisher QJ, Newton R (2000) Controls on bacterial sulphate reduction in a dual porosity aquifer system: the Lincolnshire limestone aquifer, England. Chem Geol 169:461–470
Bottrell SH, Hatfield D, Bartlett R, Spence MJ, Bartle KD, Mortimer RJG (2010) Concentrations, sulphur isotopic compositions and origin of organosulfur compounds in pore waters of a highly polluted raised peatland. Org Geochem 41:55–62
Bradley C, Baker A, Jex CN, Leng MJ (2010) Hydrological uncertainties in the modelling of cave drip-water δ18O and the implications for stalagmite palaeoclimate reconstructions. Quatern Sci Rev 29:2201–2214
Chapman JB, Ingraham NL, Hess JW (1992) Isotopic investigation of infiltration and unsaturated zone processes at Carslbad cavern, New Mexico. J Hydrol 133:343–363
Coulson JP, Bottrell SH, Lee JA (2005) Recreating atmospheric sulphur deposition histories from peat stratigraphy: diagenetic conditions required for signal preservation and reconstruction of past sulphur deposition in the Derbyshire Peak District, UK. Chem Geol 218:223–248
Einsiedl F, Mayer B (2005) Sources and processes affecting sulphate in a karstic groundwater system of the Franconian Alb, Southern Germany. Environ Sci Technol 39:7118–7125
Einsiedl F, Schäfer T, Northrup P (2007) Combined sulphur K-edge XANES spectroscopy and stable isotope analyses of fulvic acids and groundwater sulphate identify sulphur cycling in a karstic catchment area. Chem Geol 238:268–276
Einsiedl F, Maloszewski P, Stichler W (2009) Multiple isotope approach to the determination of the natural attenuation potential of a high-alpine karst system. J Hydrol 365:113–121
Fairchild IJ, Treble PC (2009) Trace elements in speleothems as recorders of environmental change. Quatern Sci Rev 28(5–6):449–468
Fairchild IJ, Borsato A, Tooth AF, Frisia S, Hawkesworth CJ, Huang Y, McDermott F, Spiro B (2000) Controls on trace element (Sr-Mg) compositions of carbonate cave waters: implications for speleothem climatic records. Chem Geol 166:255–269
Fairchild IJ, Smith CL, Baker A, Fuller L, Spötl C, Mattey D, McDermott F, EIMF (2006a) Modification and preservation of environmental signals in speleothems. Earth Sci Rev 75:105–153
Fairchild IJ, Tuckwell GW, Baker A, Tooth AF (2006b) Modelling of dripwater hydrology and hydrogeochemistry in a weakly karstified aquifer (Bath, UK): implications for climate change studies. J Hydrol 321:213–231
Fairchild IJ, Loader N, Wynn PM, Frisia S, Thomas PA, Lageard JGA, Momi A, Hartland A, Borsato A, LaPorta N, Susini J (2009) Sulphur fixation in wood mapped by synchrotron X-ray studies: implications for environmental archives. Environ Sci Technol 43(5):1310–1325
Frisia S, Borsato A, Preto N, McDermott F (2003) Late Holocene annual growth in three Alpine stalagmites records the influence of solar activity and the North Atlantic Oscillation on winter climate. Earth Planet Sci Lett 216:411–424
Frisia S, Borsato A, Fairchild IJ, Susini J (2005) Variations in atmospheric sulphate recorded in stalagmites by synchrotron micro-XRF and XANES analyses. Earth Planet Sci Lett 235:729–740
Frisia S, Borsato A, Susini J (2008) Synchrotron radiation applications to past volcanism archived in speleothems: an overview. J Vulcanol Geotherm Res 177(1):96–100
Frisia S, Fairchild IJ, Fohlmeister J, Miorandi R, Spötl C, Borsato A (2011) Carbon mass-balance modeling and carbon isotope exchange processes in dynamic caves. Geochim Cosmochim Acta 75:380–400
Fritz P, Basharmal GM, Drimmie RJ, Ibsen J, Qureshi RM (1989) Oxygen isotope exchange between sulphate and water during bacterial reduction of sulphate. Chem Geol (Isotope Geoscience) 79:99–105
Fry B, Silva SR, Kendall C, Anderson RK (2002) Oxygen isotope corrections for online δ34S analysis. Rapid Commun Mass Spectrom 16:854–858
Gabrielli P, Cozzi G, Torcini S, Cescon P, Barbante C (2006) Source and origin of atmospheric trace elements entrapped in winter snow of the Italian eastern Alps. Atmospheric Chemistry and Phys.Discussions 6:8781–8815
Gunn J, Bottrell SH, Lowe DJ, Worthington SRH (2006) Deep groundwater flow and geochemical processes in limestone aquifers: evidence from thermal waters in Derbyshire, England, UK. Hydrogeol J 14:868–888
Han GL, Liu CQ (2004) Water geochemistry controlled by carbonate dissolution: a study of the river waters draining karst-dominated terrain, Guizhou Province, China. Chem Geol 204:1–21
Hartland A, Fairchild IJ, Lead JR, Borsato A, Baker A, Frisia S, Baalousha M (2012) From soil to cave: transport of trace metals by natural organic matter in dripwaters. Chem Geol 304:68–82
Holt BD, Kumar R (1991) Oxygen isotope fractionation for understanding the sulphur cycle. In: Krouse HR, Grinenko VA (eds) Stable isotopes: natural and anthropogenic sulphur in the environment, vol 43. SCOPE/Wiley, New York, pp 27–41
Holt BD, Kumar R, Cunningham PT (1982) Primary sulphates in atmospheric sulphates: estimation in oxygen isotope ratio measurements. Science 217:51–53
Huang Y, Fairchild IJ, Borsato A, Frisia S, Cassidy N, McDermott F, Hawkesworth CJ (2001) Seasonal variations in Sr, Mg and P in modern speleothems (Grotta di Ernesto, Italy). Chem Geol 175:429–448
Jamieson RE, Wadleigh MA (1999) A study of the oxygen isotopic composition of precipitation sulphate in Eastern Newfoundland. Water Air Soil Pollut 110:405–420
Jenkins KA, Bao H (2006) Multiple oxygen and sulphur isotope compositions of atmospheric sulphate in Baton Rouge, LA, USA. Atmos Environ 40:4528–4537
Kluge T, Reichelmann DFC, Wieser M, Spötl C, Sültenfuß J, Schröder-Ritzrau A, Niggemann S, Aeschbach-Hertig W (2010) Dating cave dripwater by tritium. J Hydrol 394:396–406
Kohl L, Bao H (2011) Triple-oxygen-isotope determination of molecular oxygen incorporation in sulphate produced during abiotic pyrite oxidation (pH=2–11). Geochim Cosmochim Acta 75:1785–1798
Krouse HR, Stewart JWB, Grinenko VA (1991) Pedosphere and biosphere. In: Krouse HR, Grinenko VA (eds) Stable isotopes in the assessment of natural and anthropogenic sulphur in the environment. SCOPE/Wiley, New York, pp 267–306
Likens GE, Driscoll CT, Buso DC, Michell MJ, Lovett GM, Bailey SW, Siccama TG, Reiners WA, Alewell C (2002) The Biogeochemistry of sulphur at Hubbard Brook. Biogeochemistry 50:235–316
Lloyd RM (1968) Oxygen isotope behaviour in the sulphate-water system. J Geophys Res 73:6099–6110
Lukeneder A (2011) The Biancone and Rosso Ammonitico facies of the northern Trento Plateau (Dolomites, Southern Alps, Italy). Annals of the natural history museum. Wien. Series A 113:9–33
Mayer B. (1998) Potential and limitations of using sulphur isotope abundance ratios as an indicator for natural and anthropogenic induced environmental change. In: Isotope techniques in the study of environmental change. Proceedings of an international conference in Vienna, Austria. 14–18th April 1997 IAEA, Vienna, Austria, pp 423–435
Mayer B, Fritz P, Prietzel J, Krouse HR (1995) The use of stable sulphur and oxygen isotope ratios for interpreting the mobility of sulphate in aerobic forest soils. Appl Geochem 10:161–173
Miorandi R, Borsato A, Frisia S, Fairchild IJ, Richter DK (2010) Epikarst hydrology and implications for stalagmite capture of climate changes at Grotta di Ernesto (NE Italy): results from long-term monitoring. Hydrol Process 24(21):3101–3114
Mitchell MJ, Krouse HR, Mayer B, Stam AC, Zhang Y (1998) Use of stable isotopes in evaluating sulphur biogeochemistry of forest ecosystems. In: Kendall C, McDonnell JJ (eds) Isotope tracers in catchment hydrology. Elsevier, Amsterdam, pp 489–518
Mitchell MJ, Mayer B, Bailey SW, Hornbeck JW, Alewell C, Driscoll CT, Likens GE (2001) Use of stable isotope ratios for evaluating sulphur sources and losses at the Hubbard Brook experimental forest. Water Air Soil Pollut 130:75–86
Mitchell MJ, Lovett G, Bailey S, Beall F, Burns D, Buso D, Clair TA, Courchesne F, Duchesne L, Eimers C, Fernandez I, Houle D, Jeffries DS, Likens GE, Moran MD, Rogers C, Schwede D, Shanley J, Weathers KC, Vet R (2011) Comparisons of watershed sulphur budgets in southeast Canada and northeast US: new approaches and implications. Biogeochemistry 103:181–207
Nodvin SC, Driscoll CT, Likens GE (1986) The effect of pH on sulfate adsorption by a forest soil. Soil Sci 142:69–75
Novak M, Mitchell MJ, Jackova I, Buzek F, Schweigstillova J, Erbanova L, Prikryl R, Fottova D (2007) Processes affecting oxygen isotope ratios of atmospheric and ecopsystem sulphate in two contrasting forest catchments in central Europe. Environ Sci Technol 41:703–709
Nriagu JO, Holdway DA, Coker RD (1987) Biogenic sulfur and the acidity of rainfall in remote areas of Canada. Science 237:1189–1192
Prechtel A, Alewell C, Armbruster M, Bittersohl J, Cullen JM, Evans CD, Helliwell R, Kopácek J, Marchetto A, Matzner E, Meesenburg H, Moldan F, Moritz K, Veselý J, Wright RF (2001) Response of sulphur dynamics in European catchments to decreasing sulphate deposition. Hydrol Earth Syst Sci 5(3):311–325
Rees CE, Jenkins WJ, Monster J (1978) The sulphur isotopic composition of ocean water sulphate. Geochim Cosmochim Acta 42(4):377–381
Shanley JB, Mayer B, Mitchell MJ, Michel RL, Bailey SW, Kendall C (2005) Tracing sources of streamwater sulphate using S and O isotope ratios of sulphate and 35S activity. Biogeochemistry 76:161–185
Skrzypek G, Jezierski P, Szynkiewicz A (2010) Preservation of primary isotope signatures of peat-forming plants during early decomposition–observation along an altitudinal transect. Chem Geol 273:238–249
Spence MJ, Bottrell SH, Thornton SF, Lerner DN (2001) Isotopic modelling of the significance of sulphate reduction for phenol attenuation in a polluted aquifer. J Contam Hydrol 53:285–304
Strebel O, Böttcher J, Fritz P (1990) Use of isotope fractionation of sulfate-sulfur and sulfate-oxygen to assess bacterial desulfurication in a sandy aquifer. J Hydrol 121:155–172
Thode HG (1991) Sulphur isotopes in nature and the environment: an overview. In: Krouse HR, Grinenko VA (eds) Stable isotopes in the assessment of natural and anthropogenic sulphur in the environment. SCOPE/Wiley, New York, pp 267–306
Toran L, Harris RF (1989) Interpretation of sulphur and oxygen isotopes in biological and abiological sulfide oxidation. Geochim Cosmochim Acta 53:2341–2348
Van Stempvoort DR, Reardon EJ, Fritz P (1990) Fractionation of sulphur and oxygen isotopes in sulphate by soil sorption. Geochim Cosmochim Acta 54:2817–2826
Williams PW (2008) The role of the epikarst in karst and cave hydrogeology: a review. Int J Speleol 37(1):1–10
Wynn PM, Fairchild IJ, Baker A, Frisia S, Borsato A, Baldini J, McDermott F (2008) Isotopic archives of sulphur in speleothems. Geochim Cosmochim Acta 72:2465–2477
Wynn PM, Fairchild IJ, Frisia S, Spötl C, Baker A, Borsato A, EIMF (2010) High-resolution sulphur isotope analysis of speleothem carbonate by secondary ionisation mass spectrometry. Chem Geol 271:101–107
Zhang Y, Mitchell MJ, Christ M, Likens GE, Krouse RH (1998) Stable sulphur isotopic biogeochemistry of the Hubbard Brook Experimental Forest, New Hampshire. Biogeochemistry 41:259–275
Acknowledgments
The authors would like to thank the UK Natural Environment Research Council (NERC) for funding this work (Grant NE/C511805/1). Isotope analysis was undertaken at the University of Birmingham stable isotope facility. Thanks are also expressed to Michele Zandonati (Museo delle Scienze, Trento) for support in cave monitoring. Thanks are also expressed to Drs. K. Jarvis and K. Linge at the NERC ICP-MS facility, Kingston University for assistance with sulphur analysis in carbonate materials. We are also grateful to the two anonymous reviewers and Prof. Simon Bottrell whose suggestions helped to improve this manuscript.
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Wynn, P.M., Borsato, A., Baker, A. et al. Biogeochemical cycling of sulphur in karst and transfer into speleothem archives at Grotta di Ernesto, Italy. Biogeochemistry 114, 255–267 (2013). https://doi.org/10.1007/s10533-012-9807-z
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DOI: https://doi.org/10.1007/s10533-012-9807-z