Scientific CommitteeRomain MillotChair of the Scienti�c CommitteeBRGM, France

Ian CartwrightMonash University, Australia

Jiubin Chen Institute of Geochemistry, Chinese Academy of Sciences, China

Attila Demény Institute for Geological and Geochemical Research, Hungary

Olivier Donard IPREM, Université de Pau et des pays de l'Adour, France

Martin Elsner Helmholtz Zentrum München,Germany

CONTACTS - INFORMATIONSBRGM – French Geological Survey3 avenue Claude Guillemin - BP 3600945060 Orléans cedex 2 - France

aig11@brgm.frhttp://aig11.brgm.fr

Jean-Pierre Girard Total, France

Bernhard MayerUniversity of Calgary, Canada

Philippe NégrelBRGM, France

Neus Otero University of Barcelona, Spain

Martine Savard Geological Survey of Canada

Avner VengoshDuke University, USA

Nathalie Vigier CNRS, Laboratoire d'Océanographie de Villefranche, France

Organizing CommitteeChristophe InnocentChair of the Organizing CommitteeBRGM, France

Tom Bullen Isotope Geochemistry Forever, USA

Benoît Gayet BRGM, France

Nolwenn HervioBRGM, France

Wolfram Kloppmann BRGM, France

Romain MillotBRGM, France

Philippe Négrel BRGM, France

11thApplied Isotope

GeochemistryConference

September21st-25th 2015

Third circularSeptember 2015

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Final announcementand scientific program

Dear Colleagues,

The 11th International Symposium on Applied Isotope Geochemistry (AIG-11) will be held from 21 to 25 September 2015 at the French Geological Survey (BRGM) in Orléans, France.The purpose of this international conference is to bring together specialists in the di�erent �elds related to applied isotope geochemistry, to present state-of-the-art developments as well as key examples of application and to promote exchange of ideas between scientists.Applied Isotope Geochemistry (AIG) is a working group of the International Association of GeoChemistry (IAGC). The aim of the 11th Applied Isotope Geochemistry conference is to provide a forum where a wide range of applications of isotope analyses in geosciences and related �elds are presented. A special focus will be put on water resources, as the downstream Loire River is scheduled to become a Unesco World Heritage site and to join the Natura 2000 network.

We are looking forward to meeting you in Orléans

The Organizing Committee of AIG-11

WELCOMEADDRESS

SCIENTIFICSESSIONSIsotope Biogeochemistry

Advances in methodologial and instrumental developments

Isotope Geology: • climate change and• georesources • residence times • critical zone • groundwater �ow

Isotopes in underground Energy Resources

Environmental forensics

Isotope forensics

BRGM, OrléansFRANCE

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SCIENTIFICPROGRAM

19:30 • 22:30 ICE BREAKER PARTY Hôtel des Portes de Sologne

08:30 • 09:00 Co�ee and Registration09:00 • 09:30 WELCOME TO BRGM - OPENING CEREMONY ISOTOPE BIOGEOCHEMISTRY (chair B. Mayer)09:30 • 10:00 R.B. Wanty - keynote speaker - Isotopic insights into biological regulation of zinc in contaminated systems10:00 • 10:20 L. Dinis - Treatment protocol for using tree-ring Zn isotopes for environmental studies10:20 • 10:40 C. Grengg - Stable isotope signatures within microbial induced concrete corrosion: A �eld study10:40 • 11:20 Tea / co�ee break & posters ADVANCES IN METHODOLOGICAL AND INSTRUMENTAL DEVELOPMENTS (chairs T.D. Bullen & J. Chen)11:20 • 11:50 J. Sonke - keynote speaker - Advances in Hg stable isotope biogeochemistry11:50 • 12:10 R. Das - Mass Independent Fractionation of Mercury Isotopes as Source Tracers in Sediments12:10 • 12:30 E. Federherr - Novel tool for simultaneous carbon and nitrogen stable isotope analyses in aqueous samples12:30 • 12:50 M. Blessing - Customized injection techniques for compound-speci�c isotope analysis of natural gas samples13:00 • 14:20 Lunch14:20 • 14:40 F. Fourel - New frontiers for sulfur isotopic analyses14:40 • 15:00 G.S. Remaud - Position-Speci�c Isotope Analysis by Isotopic NMR Spectrometry: New Insights on Environmental Pollution Studies15:00 • 15:20 T. Breton - Improving precision and signal/noise ratios for MC-ICP-MS15:20 • 16:10 Tea / co�ee break & posters ISOTOPE GEOLOGY: CLIMATE CHANGE & GEORESOURCES (chair R. Wanty)16:10 • 16:30 M.R. Ghorbani - Sr isotopic ratios of two magmatic series unraveling the role of crustal contamination in NW Firoozeh, NE Iran16:30 • 16:50 S. Sarkar - Stable carbon and oxygen isotopes in red boles: A clue to understand its formation mechanism16:50 • 17:10 M. Thiry - Isotope signature of sand calcites from the Paris Basin: proxies of permafrost/ groundwater paleoconditions17:30 • 18:30 IAGC MEETINGEvening DINNER AT YOUR LEISURE

Monday September 21th

Sunday September 20th

08:30 • 09:00 Co�ee and Registration09:00 • 09:30 WELCOME TO BRGM - OPENING CEREMONY ISOTOPE BIOGEOCHEMISTRY (chair B. Mayer)09:30 • 10:00 R.B. Wanty - keynote speaker - Isotopic insights into biological regulation of zinc in contaminated systems10:00 • 10:20 L. Dinis - Treatment protocol for using tree-ring Zn isotopes for environmental studies10:20 • 10:40 C. Grengg - Stable isotope signatures within microbial induced concrete corrosion: A �eld study10:40 • 11:20 Tea / co�ee break & posters ADVANCES IN METHODOLOGICAL AND INSTRUMENTAL DEVELOPMENTS (chairs T.D. Bullen & J. Chen)11:20 • 11:50 J. Sonke - keynote speaker - Advances in Hg stable isotope biogeochemistry11:50 • 12:10 R. Das - Mass Independent Fractionation of Mercury Isotopes as Source Tracers in Sediments12:10 • 12:30 E. Federherr - Novel tool for simultaneous carbon and nitrogen stable isotope analyses in aqueous samples12:30 • 12:50 M. Blessing - Customized injection techniques for compound-speci�c isotope analysis of natural gas samples13:00 • 14:20 Lunch14:20 • 14:40 F. Fourel - New frontiers for sulfur isotopic analyses14:40 • 15:00 G.S. Remaud - Position-Speci�c Isotope Analysis by Isotopic NMR Spectrometry: New Insights on Environmental Pollution Studies15:00 • 15:20 T. Breton - Improving precision and signal/noise ratios for MC-ICP-MS15:20 • 16:10 Tea / co�ee break & posters ISOTOPE GEOLOGY: CLIMATE CHANGE & GEORESOURCES (chair R. Wanty)16:10 • 16:30 M.R. Ghorbani - Sr isotopic ratios of two magmatic series unraveling the role of crustal contamination in NW Firoozeh, NE Iran16:30 • 16:50 S. Sarkar - Stable carbon and oxygen isotopes in red boles: A clue to understand its formation mechanism16:50 • 17:10 M. Thiry - Isotope signature of sand calcites from the Paris Basin: proxies of permafrost/ groundwater paleoconditions17:30 • 18:30 IAGC MEETINGEvening DINNER AT YOUR LEISURE

09:00 • 17:30 ADVANCES IN METHODOLOGICAL AND INSTRUMENTAL DEVELOPMENTS

P. Höhener - Position-speci�c carbon isotope fractionation gives insights into mechanistic models for evaporation of organic liquids in the environment W.I Ridley - Measurement of in situ sulfur isotopes by laser ablation multi-collector ICPMS: opening Pandora’s Box A.M. Desaulty - Using DGT passive samplers and MC-ICPMS to determine Pb and Zn isotopic signature of natural water A. Verney-Carron - Use of hydrogen isotopes to understand stained glass weathering N. Suto - Stable carbon isotope ratio for sugar, amino acid, and ca�eine by liquid chromato graphy/isotope ratio mass spectrometry H. Kawashima - The fractionation factors of stable hydrogen isotope ratios for VOCs 09:00 • 17:30 ISOTOPE GEOLOGY

A. Sarkar - Late Quaternary climatic record from ODP Site 705 in the Northern Indian Ocean L. Bastian - Investigating Li isotope composition of Nile deltaic sediments as paleotracer of continental alteration M. Gigoux - δ44Ca ratio in stratiform �uorite deposits in Burgundy (France): tracing �uid origin and/or fractionation processes T. Sera�movski - Sulphur isotope composition in Plesenci native sulphur mineral deposit, Republic of Macedonia P. Lach - In-situ isotopic and chemical study of pyrite from Chu-Sarysu (Kazakhstan) roll-front uranium deposit B. Orberger - Stable isotopes (Li, O, H) combined with brine chemistry: powerful tracers for Li origins in Salar deposits from the Puna region, Argentina

SCIENTIFICPROGRAM

08:30 • 09:00 Co�ee ISOTOPE HYDROLOGY: RESIDENCE TIMES (chairs E. Petelet & Ph. Négrel)09:00 • 09:30 M. Kralik - keynote speaker - How to Estimate Mean Residence Times of Groundwater 09:30 • 09:50 C. Bouchez - Investigation of 36Cl distribution: towards a new estimation of groundwater residence times in the con�ned aquifer of the LCB?09:50 • 10:20 I. Cartwright - keynote speaker - Residence times of water contributing to headwater streams determined using 3H10:20 • 11:00 Tea / co�ee break & posters ISOTOPE HYDROLOGY: CRITICAL ZONE (chairs Ph. Négrel & E. Petelet)11:00 • 11:30 F. Chabaux - keynote speaker - U activity ratios in surface waters as tracers and chronometers of water transfers in the critical zone11:30 • 11:50 T.D. Bullen - Evidence for nutrient biolifting in Hawaiian climosequence soils as revealed by stable isotope systematics of alkaline earth metals11:50 • 12:10 M. Le Gall - Tracing sediment sources using strontium isotopes in a pond draining an agricultural catchment (Loire River basin, France) 12:10 • 12:30 R.S. Harmon - Isotopic geochemistry of Panama rivers12:30 • 12:50 F. Gal - Geochemical study of a crater lake: Lake Pavin, France: a view through Li-O-H isotopes12:50 • 13:10 H. Mohammadzadeh - Investigating the Origin and Interaction between Karstic and Alluvial Aquifers in NW of Zagros Mountain Range, Iran, Using Isotopic and Geochemical Tools13:10 • 14:30 Lunch ISOTOPE HYDROLOGY: GROUNDWATER FLOW (chairs R. Harmon & A. Vengosh)14:30 • 15:00 T. Szocs - keynote speaker - Integrating hydrogeochemical and isotope data in studying regional groundwater �ow systems15:00 • 15:20 R.L. Stotler - Isotopic composition of the Ogallala-High Plains aquifer and vadose zone15:20 • 15:40 M.F. Ben Hamouda - Assessment of groundwater salinity mechanisms in the coastal aquifer of El Haouaria, Northern Tunisia15:40 • 16:00 J. Tarhourni - Modeling the recharge and the renewal rate based on 3H and 14C isotopes in the coastal aquifer of El Haouaria, Northern Tunisia16:00 • 16:50 Tea / co�ee break & posters16:50 • 17:10 W. Kloppmann - Some extreme B isotope ratios in groundwater17:10 • 17:30 M. Anees - Isotope studies and chemical investigations of Tattapani hot springs in Kotli (Kashmir, NE Pakistan): Implications on reservoir origin and temperature

Tuesday September 22thMonday posters

09:00 • 17:30 ISOTOPE HYDROLOGY

L.P. Alexeeva - Halogen isotopes (37Cl and 81Br) in brines of the Siberian Platform K.A. Swana - Comparing the residence time of deep vs shallow groundwater in the Karoo Basin, South Africa using 3H, 14C, 36Cl and 4He isotopes Ph. Négrel - Boron isotope characterization to design a frame of hydrogeological functioning of a wetland system (Massif Central, France) C. Innocent - U isotope systematics of groundwaters from the Triassic aquifer of the northeastern Paris Basin and of the Rhine Graben, France E. Petelet-Giraud - Boron isotope variation during �ood events in a Mediterranean basin: Tracer of the water compartments (Hérault, S. France) A. Brenot - Insight from surface water-groundwater interactions in an alluvial aquifer: contributions of δ2H and δ18O of water, δ34SSO4 and δ18OSO4 of sulfates, 87Sr/86Sr ratio M. Dellinger - Testing the steady state assumption for the Earth’s surface denudation using Li isotopes in the Amazon basin

18:00 • 20:00 RECEPTION AT THE CITY HALL OF ORLÉANS20:00 DINNER AT YOUR LEISURE IN ORLEANS

08:30 • 19:30 MID CONFERENCE FIELD TRIP Quarry of Bois d'Abbesse, lunch at Barbizon and visit to Château de Fontainebleau 19:30 • 22:30 FESTIVAL DE LOIRE - DINNER AT YOUR LEISURE

SCIENTIFICPROGRAM

08:30 • 09:00 Co�ee ISOTOPES IN UNDERGROUND ENERGY RESOURCES (chairs W. Kloppmann & R. Millot) 09:00 • 09:30 B. Mayer - keynote speaker - Prospects and limitations of chemical and isotopic groundwater monitoring to assess the potential environmental impacts of unconventional oil and gas development 09:30 • 09:50 D.D. Owen - Stable isotopes of lithium as indicators of coal seam gas-bearing aquifers09:50 • 10:10 J.S. Harkness - Lithium isotope �ngerprints in coal and coal combustion residuals from the United States10:10 • 10:30 B. Sanjuan - Geochemical monitoring of the thermal manifestations located near the Bouillante geothermal power plant, in Guadeloupe (FWI)10:30 • 11:20 Tea / co�ee break & posters11:20 • 11:40 A. Vengosh - Isotopic �ngerprints for delineating the environmental e�ects of hydraulic fracturing �uids 11:40 • 12:00 G. Bordeleau - Identifying the source of methane in groundwater in a ‘virgin’ area with regards to shale gas exploitation: a multi-isotope approach12:00 • 12:20 J. Miller - EO, H, CDIC, Sr, B and 14C isotope �ngerprinting of deep groundwaters in the Karoo Basin, South Africa as a precursor to shale gas exploration12:20 • 12:40 C. Lerouge - Dissolved CO2 and alkane gas in clay formations 12:40 • 13:00 J. MacDonald - Dolomitization processes in hydrocarbon reservoirs: insight from clumped isotope geothermometry 13:00 • 14:30 Lunch ENVIRONMENTAL FORENSICS (chairs N. Otero & I. Cartwright)14:30 • 15:00 R. Aravena - keynote speaker - New Applications of Environmental Isotopes in Remediation Studies of Organic Contaminants in Groundwater15:00 • 15:20 A. Grau-Martinez - Evaluation of two carbon sources for inducing denitri�cation: Batch and column experiments15:20 • 15:40 G. De Simone - Using natural radon as a tracer of gasoline contamination15:40 • 16:00 S. Yuan - Large variation of mercury isotope composition during single precipitation event at Lhasa City, Tibetan Plateau, China16:00 • 16:50 Tea / co�ee break & posters16:50 • 17:10 C. Torrento - Evaluation of the applicability of CSIA for assessing the fate of four herbicides in an irrigated �eld cropped with corn17:10 • 17:30 D. Rodriguez-Fernandez - C and Cl-CSIA for elucidating chlorinated methanes biotic and abiotic degradation at a polluted bedrock aquifer

Thursday September 24th

Wenesday September 23th

Tuesday posters

08:30 • 18:00 ISOTOPE FORENSICS

H. Amiri - Nitrate nitrogen and oxygen isotope characterization of the Shiraz aquifer (Iran) R. Millot - Lead isotope systematics of groundwaters: implications for source tracing in various aquifer types C. Lise - Origins of lead in an irrigated agricultural soil in Crete Y. Kikawada - Lead and lithium isotope ratios and their variation in atmospheric deposits in Fukuoka, Japan in the 1960s A.M. Tye - Using stable metal isotope dilution assays to determine metal �xation in soils M.M. Savard - Triple isotopic ratios to characterize atmospheric N compounds in Alberta – Work in progress F.J. Yue - The contribution of nitrate sources in Liao Rivers, China, basing on isotopic fractionation and Bayesian mixing model B. Lemière - O, H and Sr isotopes tracing the migration distance of mining, ore processing and metallurgical activities end-products in a river basin (Subarnarekha River, India) I. Tescione - A comparative 87Sr/86Sr study in Red and White wines to validate its use as geochemical tracer for the geographical origin of wine V. Vinciguerra - Strontium Isotope Characterization of Wines from the Quebec (Canada) terroir

08:30 • 18:00 ISOTOPES IN UNDERGROUND ENERGY RESOURCES

A. Eilers - Characterisation of radon concentrations in Karoo groundwater, South Africa, as a prelude to potential shale-gas development

18:00 • 23:00 CONFERENCE DINNER Château de La Ferté-Saint-Aubin

SCIENTIFICPROGRAM

09:00 • 09:30 Co�ee ISOTOPE FORENSICS (chairs I. Cartwright & N. Otero) 09:30 • 09:50 M. Casas-Ruiz - Dissolved versus colloidal U and Th under acid mine drainage conditions in Río Tinto area (Spain)09:50 • 10:10 F. Mittermayr - Concrete corrosion in tunnels: a stable O and H isotope study10:10 • 10:30 M. Saheb - Isotope tracers to investigate the reactive zones in stones from built cultural heritage10:30 • 10:50 P. Roubira - Pb isotopic compositions of �n whale baleen plates – A clue to unravel individual migrations between the Atlantic Ocean and the Mediterranean Sea?10:50 • 11:20 Tea / co�ee break & posters 11:20 • 12:40 AWARDS AND CONCLUDING REMARKS 12:40 • 13:00 CLOSING CEREMONY 13:00 • 14:00 Lunch

Friday September 25th

Volume 13, Pages 1-324 (2015)11th Applied Isotope GeochemistryConference AIG-11Edited by Romain Millot and Philippe Négrel

http://www.sciencedirect.com/science/journal/18785220/13

SPECIAL ISSUEPROCEDIA EARTHAND PLANETARYSCIENCE

Thursday posters

ORAL SESSIONS INSTRUCTIONS

Your presentation must be in English. Please use simple words and speak slower than normal - remember that you will be speaking to an international audience. The time allowance for each presentation is 15 minutes, plus 5 minutes for questions / discussion and change of speakers, excepting keynote lectures that will have 30 minutes in total. Careful time keeping is vital to be fair to other speakers and to ensure a smooth operation of the entire program.

POSTER SESSIONS INSTRUCTIONS

Posters are an important way of conveying scienti�c information. Poster presenters are required to attend their poster booth during the entire speci�ed Poster Session scheduled during the di�erent breaks in the hall of the auditorium. Each poster presentation will be assigned a speci�c poster booth in the display area. An ideal format would be a vertical A0: 1189 × 841 mm. The organizers will provide suitable materials to a�x posters to the booth.

OUTSTANDING STUDENT PRESENTATION AWARDS

We will be awarding 2 prizes for outstanding student presentations (oral and poster) to recognise undergraduate, Master’s and PhD students for quality research in isotope geochemistry applications.

NEW APPLICATIONS OF ENVIRONMENTAL ISOTOPESIN REMEDIATION STUDIES OF ORGANIC CONTAMINANTS IN GROUNDWATER

Petroleum hydrocarbon (PHC) contamination in shallow aquifers is a widespread environmental issue and a wide range of remediation technologies can be applied for cleanup impacted sites with PHC. The remediation studies discussed in this presentation were carried out at the Borden site in Canada and included a sequential use of in situ chemical oxidation (ISCO) and intrinsic bioremediation (IBR) and a land application of a sulfate solution into a PHC source and its plume. The notion behind a persulfate ISCO/IBR treatment train is that it could potentially combine the aggressive nature of persulfate ISCO in the source zone with the long-term e�ciency of subsequent enhanced sulfate reduction in both the source zone and downgradient plume. This presentation will focus on new application of environmental isotopes to monitor the e�ciency of the remediation technologies described above. These included CSIA to evaluate the degree of biodegradation of BTEX and sulfur and carbon isotopes in sulfate and dissolved inorganic carbon (DIC), respectively, to monitor the progress of sulfate reduction in the groundwater. The isotope data will be complemented with biomarker data including metabolites and compound-speci�c biodegradation genes (mRNA).

KEYNOTESPEAKERS

ABSTRACTS

Ramon ARAVENA

University of Waterloo, Canada

RESIDENCE TIMES OF WATER CONTRIBUTING TO HEADWATER STREAMS DETERMINED USING 3H

Headwater streams in the Ovens catchment, southeast Australia, have 3H activities between 1.63 and 2.45 TU that are lower than those of local rainfall (~3 TU). The variation of 3H activities and major ion concentrations with stream�ow implies that simple dilution of older groundwater with rainfall during high �ow does not occur. Rather di�erent stores of water from within the catchment (e.g. from the soil or regolith) are mobilized during rainfall events. Mean residence times estimated using an exponential-piston �ow model 12 to 36 years during summer base�ow and 6 to 14 years during recession from higher �ows. A broad correlation between 3H activities and the percentage of rainfall exported from each catchment may re�ect local di�erences in recharge and evapotranspiration; this correlation allows a broad prediction of likely residence times. These streams are bu�ered against rainfall variations on timescales of a few years; however, the impacts of changes to landuse or longer timescale changes to rainfall may take years to decades to manifest itself in changes to stream�ow or water quality.

Ian CARTWRIGHT

School of Geosciences, Monash University, Australia

INSTRUCTIONS

U ACTIVITY RATIOS IN SURFACE WATERS AS TRACERS AND CHRONOMETERS OF WATER TRANSFERS IN THE CRITICAL ZONE

The use of radioactive disequilibria as tracers and chronometers of weathering processes and related mass transfers has been recognized since the 60’. The development, over the last two decades, of analytical methods for measuring very precisely U-series nuclides (especially, 234U, 230Th and 226Ra) in environmental samples has opened up new scienti�c applications in Earth Surface Sciences. Here, we propose to present the potential of U activity ratios in surface waters as geochemical tracer and chronometer of water transfers at a watershed scale. This will be illustrated from studies performed at di�erent scales, with the analysis of U activity ratios in surface waters from small watersheds (Strengbach and Ringelbach watersheds in the Vosges Mountain, France) but also from watersheds of much more regional extension (e.g., the Upper Rhine basin or the Ganges basin).

These various studies show that variations of U activity ratios in surface waters are mainly associated with 234U-238U fractionations occurring during the water transfer within the bedrock, which intensity depends on two main parameters: the petro-physical characteristics of the aquifer, principally the geometry of water-rock interfaces and the duration of the water-rock interactions. This readily explains why di�erent U activity ratios (UAR) can be observed in the di�erent aquifers of a continental hydrosystem and hence why UAR can be used to trace the source of river waters. For a hydrological system developed on a substratum marked by fairly homogeneous petro-physical characteristics, the main parameter controlling the UAR in waters draining such a system would be the duration of the water-rock interactions. Variations of UAR in stream or spring waters of such a system can therefore be modeled using simple reactive transport model, which allows the estimation of both the dissolution rate of the bedrock and the residence time of the waters within the aquifer.

KEYNOTESPEAKERS

ABSTRACTS

François CHABAUX

Ecole et Observatoire des Sciences de la Terre, Strasbourg University, France

HOW TO ESTIMATE MEAN RESIDENCE TIMESOF GROUNDWATER

The Mean Residence Time (MRT) of groundwater is an important factor for the development of hydrogeological concepts in�uencing the origin, recharge and exchange with the aquifer rocks. In addition, contamination and risk assessment depend strongly on the estimated residence of groundwater.

Combinations of di�erent techniques have to be applied to estimate MRTs of groundwater depending on their time span. Recent recharge can be evaluated by the seasonal variation of 18O/2H, 35S and actively introduced tracers. Modern water with a residence time between 1 to 60 years can be measured by 3H/3He, 85Kr, CFCs and SF6. Old waters in the range of hundreds and thousands of years are frequently investigated by 39Ar and 14C. Very old groundwater up to 1.5 Myr can be investigated by 14C, 40Ar, 36Cl, 4He and 81Kr.

Mean Residence Times of groundwater in di�erent depths of the Vienna Basin is estimated by combinations of 18O/2H, 3H/3He, 85Kr, CFCs, SF6 and 14C evaluating previous hydrogeological concepts and risk assessments.

Martin KRALIK

Environment Agency Austria & University of Vienna, Vienna, Austria

PROSPECTS AND LIMITATIONS OF CHEMICAL AND ISOTOPIC GROUNDWATER MONITORING TO ASSESS THE POTENTIAL ENVIRONMENTAL IMPACTS OF UNCONVENTIONAL OIL AND GAS DEVELOPMENT

With the advent of shale oil and shale gas development facilitated by hydraulic fracturing it has become increasingly important to develop tracer tools to scienti�cally determine potential impacts of stray gases, formation �uids, or fracturing chemicals on shallow aquifers. Based on a multi-year monitoring program conducted in Alberta (Canada), we demonstrate that a multi-isotope approach (δ2HH2O; δ18OH2O; δ13CCH4; δ2HCH4; δ13CC2H6) in concert with chemical analyses is highly capable of identifying potential contamination of shallow aquifers with stray gases or saline �uids from intermediate or production zones, provided that su�cient baseline data have been collected. At baseline conditions, we found that methane in shallow groundwater in southern Alberta is ubiquitous and predominantly of biogenic origin. Novel approaches of in-situ concentration and isotope measurements for methane during drilling of a 530 m deep well yielded a mud-gas pro�le characterizing natural gas occurrences in the intermediate zone. The assembled data set provides evidence that potential stray gas contamination by isotopically distinct deeper thermogenic gases from the intermediate or from production zones can be e�ectively detected by suitable monitoring programs.

Bernhard MAYER

Department of Geoscience, University of Calgary, Canada

INTEGRATING HYDROGEOCHEMICAL AND ISOTOPE DATA IN STUDYING REGIONAL GROUNDWATER FLOW SYSTEMS IN THE GREAT HUNGARIAN PLAIN

Environmental isotopes (δ18O, δD, δ13C, 14C, 87Sr/86Sr) combined with hydrogeochemical data have been used in studying regional groundwater �ow systems in the Great Hungarian Plain part of the Pannonian Basin. Oxygen and deuterium isotope data show groundwater is of meteoric origin, with isotopic signatures indicative of petroleum producing units in the deeper part of the basin. Based on the carbon isotopes analysed on dissolved inorganic carbon, the groundwater residence times vary from a few thousand to tens of thousands of years. Strontium isotopic signatures show enrichment where carbonate dissolution is indicated by increasing bicarbonate values in Upper Miocene aquifers.

KEYNOTESPEAKERS

ABSTRACTS

Teodora SOZCS

Geological and Geophysical Institute of Hungary, Budapest, Hungary

ISOTOPIC INSIGHTS INTO BIOLOGICAL REGULATION OF ZINC IN CONTAMINATED SYSTEMS

Aquatic organisms use a variety of biogeochemical reactions to regulate essential and non-essential trace metals. Many of these mechanisms can lead to isotopic fractionation, thus measurement of metal isotopes may yield insights into the processes by which organisms respond to metal exposure. We illustrate these concepts with two case studies, one involving an intra- and the other an extra-cellular mechanism of Zn sequestration. In the �rst study, the may�y Neocloeon triangulifer was grown in the laboratory, and fed a diet of Zn-doped diatoms at Zn levels exceeding the requirements for normal may�y life functions. The N. triangulifer larvae consumed the diatoms and retained their Zn isotopic signature. Upon metamorphosis, the subimago life stage lost Zn mass either in the exuvia or by excretion, and the Zn retained was isotopically enriched. Thus, Zn uptake is non-fractionating, but Zn regulation favors the lighter isotope. Thus the Zn remaining in the subimago was isotopically heavier. In the second study, Zn was adsorbed on the cell walls and exopolysaccharide secretions of cyanobacteria, which favored the heavier Zn isotope. Continued adsorption eventually resulted in nucleation and biomineralization of hydrozincite {Zn5(CO3)2(OH)6}. These case studies demonstrate the utility of Zn isotopes to provide insights into how aquatic insects respond to metal exposure.

Rich WANTY

USGS, Lakewood, CO, USA

ADVANCES IN HG STABLE ISOTOPE BIOGEOCHEMISTRY

Mercury (Hg) has seven stable isotopes of varying abundance. All abiotic and biotic transformations of Hg cause mass dependent fractionation (MDF) of Hg isotopes. In addition, photochemical transformations can also cause mass independent fractionation (MIF). Both MDF and MIF can be used to investigate sources and fate of Hg in the environment, and can be used to investigate the various transformations of Hg between its inorganic forms (Hg(II) and Hg(0)) to methylated Hg. Based on research to date, a large range in MDF is found in both geological, biological and man-made materials. Large MIF e�ects result from the photochemical degradation of methylmercury (MeHg) and photochemical reduction of Hg in aqueous environments. These signatures of sources can be traced through the environment and food chain into �sh consumers, providing important insights into Hg biogeochemical cycling and bioaccumulation. This keynote talk will address recent advances in using Hg isotopes to study Hg sources, fate and bioaccumulation.

Jeroen SONKE

GET, Géosciences Environnement Toulouse, France

CONFERENCE VENUEBRGM Auditorium3, av. C. Guillemin BP 3600945060 Orléans Cedex 2, Francetel (33) 2 38 64 34 34 www.brgm.eu

CONTACTAIG-11 mobile phone:

tel +33 6 43 72 29 33aig11@brgm.fr

PRACTICALINFORMATION

We are grateful to all the participants for their contributions. We also sincerely thank for the supports from the following institutions, companies and agencies.

ACKNOWLEDGMENTS

MINISTÈRE DE L'ÉDUCATION NATIONALE,DE L'ENSEIGNEMENT SUPÉRIEUR

ET DE LA RECHERCHE

MINISTÈRE DE L'ÉCOLOGIE,DU DÉVELOPPEMENT DURABLE

ET DE L'ÉNERGIE

MINISTÈRE DE L'ÉCONOMIE,DE L'INDUSTRIE ET DU NUMÉRIQUE

Scientific CommitteeRomain MillotChair of the Scienti�c CommitteeBRGM, France

Ian CartwrightMonash University, Australia

Jiubin Chen Institute of Geochemistry, Chinese Academy of Sciences, China

Attila Demény Institute for Geological and Geochemical Research, Hungary

Olivier Donard IPREM, Université de Pau et des pays de l'Adour, France

Martin Elsner Helmholtz Zentrum München,Germany

CONTACTS - INFORMATIONSBRGM – French Geological Survey3 avenue Claude Guillemin - BP 3600945060 Orléans cedex 2 - France

aig11@brgm.frhttp://aig11.brgm.fr

Jean-Pierre Girard Total, France

Bernhard MayerUniversity of Calgary, Canada

Philippe NégrelBRGM, France

Neus Otero University of Barcelona, Spain

Martine Savard Geological Survey of Canada

Avner VengoshDuke University, USA

Nathalie Vigier CNRS, Laboratoire d'Océanographie de Villefranche, France

Organizing CommitteeChristophe InnocentChair of the Organizing CommitteeBRGM, France

Tom Bullen Isotope Geochemistry Forever, USA

Benoît Gayet BRGM, France

Nolwenn HervioBRGM, France

Wolfram Kloppmann BRGM, France

Romain MillotBRGM, France

Philippe Négrel BRGM, France

11thApplied Isotope

GeochemistryConference

September21st-25th 2015

Third circularSeptember 2015

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Applied

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Isotope

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BRGM, OrléansFRANCE

Applied

ASept.

Isotope

I21-25

Geochemistry

G2015

Final announcementand scientific program