Ian Clark
#81,841
Most Influential Person Now
Canadian geologist
Ian Clark 's AcademicInfluence.com Rankings
Download Badge
Earth Sciences
Ian Clark 's Degrees
- PhD Geology University of British Columbia
Why Is Ian Clark Influential?
(Suggest an Edit or Addition)According to Wikipedia, Ian D. Clark is a professor in the Department of Earth Sciences at the University of Ottawa , who has been publishing research on geoscience, groundwater and geochemistry since 1982, and is currently teaching GEO 1111 with David Schneider. His graduate work in isotope hydrogeology was at the University of Waterloo and the University of Paris.
Ian Clark 's Published Works
Published Works
- Environmental Isotopes in Hydrogeology (1997) (2961)
- Stable Isotope Geochemistry (2011) (926)
- Groundwater Geochemistry and Isotopes (2015) (197)
- Thawing of massive ground ice in mega slumps drives increases in stream sediment and solute flux across a range of watershed scales (2013) (182)
- Paleoclimatic Reconstruction in Northern Oman Based on Carbonates from Hyperalkaline Groundwaters (1990) (145)
- The origin and evolution of Canadian Shield brines: evaporation or freezing of seawater? New lithium isotope and geochemical evidence from the Slave craton (1999) (142)
- Stable isotope disequilibria in travertine from high pH waters: Laboratory investigations and field observations from Oman (1992) (126)
- Kinetic enrichment of stable isotopes in cryogenic calcites (1992) (124)
- WATER - ROCK INTERACTION (2013) (102)
- Prevalence of anaerobic ammonium-oxidizing bacteria in contaminated groundwater. (2011) (93)
- Sorption of strontium onto bacteriogenic iron oxides. (2009) (91)
- Impacts of hillslope thaw slumps on the geochemistry of permafrost catchments (Stony Creek watershed, NWT, Canada) (2013) (85)
- A natural analogue of high pH cement pore waters from the Maqarin area of northern Jordan. I: introduction to the site (1992) (81)
- Aufeis of the Firth River Basin, Northern Yukon, Canada: insights into permafrost hydrogeology and Karst (1997) (79)
- Basal ice facies and supraglacial melt-out till of the Laurentide Ice Sheet, Tuktoyaktuk Coastlands, western Arctic Canada (2005) (74)
- Microbial and geochemical features suggest iron redox cycling within bacteriogenic iron oxide-rich sediments (2011) (73)
- Groundwater mixing dynamics at a Canadian Shield mine (2000) (71)
- THE ENVIRONMENTAL ISOTOPES (2013) (71)
- Natural Attenuation of Septic System Nitrogen by Anammox (2012) (64)
- Segregated-intrusive ice of subglacial meltwater origin in retrogressive thaw flow headwalls, Richardson Mountains, NWT, Canada (2004) (63)
- The artesian thermal groundwaters of northern Jordan: insights into their recharge history and age (1997) (63)
- First Status Report on Radiocarbon Sample Preparation Techniques at the A.E. Lalonde AMS Laboratory (Ottawa, Canada) (2016) (62)
- Recharge and Preservation of Laurentide Glacial Melt Water in the Canadian Shield (2000) (61)
- Origin and Fate of Industrial Ammonium in Anoxic Ground Water—15N Evidence for Anaerobic Oxidation (Anammox) (2008) (58)
- Optical scattering properties of terrestrial varnished basalts compared with rocks and soils at the Viking Lander sites (1997) (58)
- Stable isotope geochemistry of ground and surface waters associated with undisturbed massive sulfide deposits; constraints on origin of waters and water–rock reactions (2006) (55)
- Stratigraphy and glaciotectonic structures of permafrost deformed beneath the northwest margin of the Laurentide ice sheet, Tuktoyaktuk Coastlands, Canada (2004) (53)
- Levels of tritium in soils and vegetation near Canadian nuclear facilities releasing tritium to the atmosphere: implications for environmental models. (2015) (49)
- Lithium Isotope Geochemistry and Origin of Canadian Shield Brines (2003) (48)
- Agricultural soil denitrifiers possess extensive nitrite reductase gene diversity (2017) (48)
- Iodine-129 constraints on residence times of deep marine brines in the Canadian Shield (2002) (45)
- Tracing Ground Water Recharge in an Agricultural Watershed with Isotopes (1999) (44)
- Paleozoic-aged brine and authigenic helium preserved in an Ordovician shale aquiclude (2013) (44)
- Groundwater Contributions to Discharge in a Permafrost Setting, Big Fish River, N.W.T., Canada (2001) (42)
- Box-Ironbark: Forests and Woodlands Investigation Resources and Issues Report (1997) (41)
- A Comparison of the Rates of Fe(III) Reduction in Synthetic and Bacteriogenic Iron Oxides by Shewanella putrefaciens CN32 (2009) (41)
- Mineralogy and origin of surficial uranium deposits hosted in travertine and calcrete from central Jordan (2014) (40)
- Timing of advance and basal condition of the Laurentide Ice Sheet during the last glacial maximum in the Richardson Mountains, NWT (2013) (39)
- Sources and circulation of water and arsenic in the Giant Mine, Yellowknife, NWT, Canada (2004) (38)
- Nature and origin of a Pleistocene-age massive ground-ice body exposed in the Chapman Lake moraine Complex, central Yukon Territory, Canada (2007) (37)
- Canadian Shield brine from the Con Mine, Yellowknife, NT, Canada: Noble gas evidence for an evaporated Palaeozoic seawater origin mixed with glacial meltwater and Holocene recharge (2008) (36)
- The André E. Lalonde AMS Laboratory – The new accelerator mass spectrometry facility at the University of Ottawa (2015) (36)
- Investigation of ice‐wedge infilling processes using stable oxygen and hydrogen isotopes, crystallography and occluded gases (O2, N2, Ar) (2011) (35)
- Seasonal isotopic imprint in moonmilk from Caverne de l’Ours (Quebec, Canada): implications for climatic reconstruction (2004) (35)
- Tritium–helium groundwater age used to constrain a groundwater flow model of a valley-fill aquifer contaminated with trichloroethylene (Quebec, Canada) (2011) (35)
- Compound Specific Isotopic Analysis (CSIA) of landfill leachate DOC components (2005) (34)
- Geochemical evolution and residence time of porewater in low-permeability rocks of the Michigan Basin, Southwest Ontario (2015) (34)
- Effect of chemical composition of water on the oxygen-18 and carbon-13 signature preserved in cryogenic carbonates, Arctic Canada: Implications in paleoclimatic studies (2006) (33)
- Can argillaceous formations isolate nuclear waste? Insights from isotopic, noble gas, and geochemical profiles (2015) (33)
- FORMATION OF SEASONAL ICE BODIES AND ASSOCIATED CRYOGENIC CARBONATES IN CAVERNE DE L'OURS, QUEBEC, CANADA: KINETIC ISOTOPE EFFECTS AND PSEUDO-BIOGENIC CRYSTAL STRUCTURES (2009) (32)
- Recarbonation of metamorphosed marls, Jordan (1993) (32)
- Acid drainage generation and seasonal recycling in disturbed permafrost near Eagle Plains, northern Yukon Territory, Canada (2007) (31)
- Retention of Iodide by Bacteriogenic Iron Oxides (2011) (31)
- Groundwater flow and geochemical evolution in the Central Flinders Ranges, South Australia. (2016) (30)
- Molar gas ratios of air entrapped in ice: A new tool to determine the origin of relict massive ground ice bodies in permafrost (2007) (30)
- Investigating Recharge Of Shallow And Paleo-Groundwaters In The Villa De Reyes Basin, SLP, Mexico, With Environmental Isotopes (1992) (29)
- Tululite, Ca14(Fe3+,Al)(Al,Zn,Fe3+,Si,P,Mn,Mg)15O36: a new Ca zincate-aluminate from combustion metamorphic marbles, central Jordan (2016) (29)
- Geochemical and isotopic evidence for a genetic link between Canadian Shield brines, dolomitization in the Western Canada Sedimentary Basin, and Devonian calcium-chloridic seawater (2005) (28)
- Geomicrobiology and occluded O2–CO2–Ar gas analyses provide evidence of microbial respiration in ancient terrestrial ground ice (2011) (28)
- Endostromatolites from permafrost karst, Yukon, Canada: paleoclimatic proxies for the Holocene hypsithermal (2004) (28)
- Amending woodchip bioreactors with water treatment plant residuals to treat nitrogen, phosphorus, and veterinary antibiotic compounds in tile drainage (2016) (28)
- Potassium and boron co-depletion in Canadian Shield brines: evidence for diagenetic interactions between marine brines and basin sediments (2004) (27)
- Burial and preservation of a 30,000 year old perennial snowbank in Red Creek valley, Ogilvie Mountains, central Yukon, Canada (2009) (26)
- An approach to determine the origin and age of massive ice blockages in two arctic caves (1993) (26)
- TRACING THE HYDROLOGICAL CYCLE (2013) (24)
- Noble gas and isotope geochemistry in western Canadian Arctic watersheds: tracing groundwater recharge in permafrost terrain (2013) (24)
- Strontium desorption from bacteriogenic iron oxides (BIOS) subjected to microbial Fe(III) reduction (2009) (24)
- An ice-marginal δ 18O record from Barnes Ice Cap, Baffin Island, Canada (2002) (24)
- CALCIUM URANIUM OXIDE MINERALS FROM CENTRAL JORDAN: ASSEMBLAGES, CHEMISTRY, AND ALTERATION PRODUCTS (2015) (24)
- Oxygen and hydrogen isotopes in deep thermal waters from the south meager creek geothermal area, british columbia, canada (1993) (23)
- Fissure calcretes in the arctic: a paleohydrologic indicator (1999) (22)
- Seasonal Changes In Mineralogy, Geochemistry and Microbial Community of Bacteriogenic Iron Oxides (BIOS) Deposited in a Circumneutral Wetland (2012) (22)
- Late Pleistocene and Holocene ice-wedge activity on the Blackstone Plateau, central Yukon, Canada (2018) (21)
- Intermediate members of the lime-monteponite solid solutions (Ca1–xCdxO, x = 0.36–0.55): Discovery in natural occurrence (2016) (21)
- Tritium dynamics in soils and plants grown under three irrigation regimes at a tritium processing facility in Canada. (2016) (21)
- Weathering regime and geochemical conditions in a polar desert environment, Haughton impact structure region, Devon Island, Canada (2008) (21)
- Legacy of Holocene Landscape Changes on Soil Biogeochemistry: A Perspective From Paleo‐Active Layers in Northwestern Canada (2019) (21)
- The Maqarin (Jordan) natural analogue for 14C attenuation in cementitious barriers (1994) (19)
- Water Resources in Arid Areas: The Way Forward (2017) (19)
- CO2 isotopes as tracers of firn air diffusion and age in an Arctic ice cap with summer melting, Devon Island, Canada (2007) (19)
- Origin and Flow Dynamics of Perennial Groundwater in Continuous Permafrost Terrain using Isotopes and Noble Gases: Case Study of the Fishing Branch River, Northern Yukon, Canada (2012) (19)
- Degradation pathways of dissolved carbon in landfill leachate traced with compound-specific 13C analysis of DOC (2008) (19)
- Geochemical and 3 He/ 4 He evidence for mantle and crustal contributions to geothermal fluids in the western Canadian continental margin (2000) (18)
- Paleozoic-aged microbial methane in an Ordovician shale and carbonate aquiclude of the Michigan Basin, southwestern Ontario (2015) (18)
- Origin and stability of a permafrost methane hydrate occurrence in the Canadian Shield (2010) (18)
- The atmospheric transport of iodine‐129 from Fukushima to British Columbia, Canada and its deposition and transport into groundwater (2015) (16)
- Sedimentology of gas hydrate host strata from the JAPEX/JNOC/GSC Mallik 2L-38 gas hydrate research well (1999) (16)
- ESR and TL dating of travertine from Jordan: Complications in paleodose assessment (1993) (15)
- Sulphur isotopes in carbonatites and associated silicate rocks from the Superior Province, Canada (2008) (15)
- Microbial diversity in endostromatolites (cf. Fissure Calcretes) and in the surrounding permafrost landscape, Haughton impact structure region, Devon Island, Canada. (2009) (15)
- Bioattenuation in Groundwater Impacted by Landfill Leachate Traced with δ13C (2011) (13)
- Late Quaternary paleoenvironments and growth of intrusive ice in eastern Beringia (Eagle River valley, northern Yukon, Canada) (2010) (12)
- Origin, age, and paleoenvironmental significance of carbonate precipitates from a granitic environment, Akshayuk Pass, southern Baffin Island, Canada (2007) (12)
- Groundwater geochemistry and exploration methods: Myra Falls volcanogenic massive-sulphide deposits, Vancouver Island, British Columbia, Canada (2004) (12)
- TRACING THE CARBON CYCLE (2013) (12)
- Saltwater intrusion vulnerability assessment using AHP-GALDIT model in Kashan plain aquifer as critical aquifer in a semi-arid region (2018) (12)
- Strontium isotopes as a tool for estimation of groundwater recharge and aquifer connectivity (2017) (12)
- Partitioning of 127I and 129I in an unconfined glaciofluvial aquifer on the Canadian shield (2002) (12)
- The Preparation of Water (DIC, DOC) and Gas (CO2, CH4) Samples for Radiocarbon Analysis at AEL-AMS, Ottawa, Canada (2019) (12)
- Rates of Fe(II)-Oxidation and Solubility of Bacteriogenic Iron Oxides (2016) (11)
- The seasonal fluctuations and accumulation of iodine-129 in relation to the hydrogeochemistry of the Wolf Creek Research Basin, a discontinuous permafrost watershed. (2016) (11)
- (Micro)morphological, inorganic-organic isotope geochemisty and microbial populations in endostromatolites (cf. fissure calcretes), Haughton impact structure, Devon Island, Canada: The influence of geochemical pathways on the preservation of isotope biomarkers (2009) (11)
- Isotope Constraints on the Aquatic Carbon Budget: Langat Watershed, Malaysia (2013) (10)
- Holocene fire regimes and treeline migration rates in sub-arctic Canada (2016) (10)
- Carbon isotope fractionation by circumneutral iron-oxidizing bacteria (2010) (10)
- Extraction of (129)I and (127)I via combustion from organic rich samples using (125)I as a quantitative tracer. (2014) (9)
- Soil CO2, CH4, and N2O fluxes over and between tile drains on corn, soybean, and forage fields under tile drainage management (2017) (9)
- Using a simple high-performance liquid chromatography separation and fraction collection methodology to achieve compound-specific isotopic analysis for dissolved organic compounds. (2005) (9)
- Geochemistry and isotope hydrogeology of the Mount Edziza – Mess Creek geothermal area (1989) (9)
- 129I dispersion and sources in Northwest Canada (2013) (9)
- Sources of solutes and carbon cycling in perennially ice-covered Lake Untersee, Antarctica (2020) (8)
- Regulation of Fe3+-oxide Formation Among Fe2+-oxidizing Bacteria (2012) (8)
- Using noble gas ratios to determine the origin of ground ice (2016) (7)
- Hydrology of the North Klondike River: carbon export, water balance and inter-annual climate influences within a sub-alpine permafrost catchment (2017) (7)
- The mobility of anthropogenic 129I in a shallow sand aquifer at Sturgeon Falls, Ontario, Canada (2005) (7)
- Groundwater recharge to ophiolite aquifer in North Oman: constrained by stable isotopes and geochemistry (2016) (6)
- CH4 isotopic ordering records ultra-slow hydrocarbon biodegradation in the deep subsurface (2021) (6)
- Geochemical and Isotopic Study of Bedrock Groundwater in the City of Guelph, Canada (2017) (6)
- A direct-AMS multi-isotope survey of uranium ore concentrates (2019) (6)
- Allochthonous sources of iodine and organic carbon in an eastern Ontario aquifer (2019) (6)
- Geochemical Characterization of Injected and Produced Water From Paleozoic Oil Reservoirs in Central Saudi Arabia (1997) (5)
- Isotope constraints on the origin of pore waters and salinity in the permafrost and gas hydrate core intervals of the JAPEX/JNOC/GSC Mallik 2L-38 gas hydrate research well (1999) (5)
- Distinguishing between vapor- and liquid-formed ground ice in the northern martian regolith and potential for biosignatures preserved in ice bodies (2008) (5)
- Diagenetic evolution of a sedimentary system (Michigan Basin): Insights from petrography and S-isotope micro-analysis of pyrite (2020) (5)
- Hydrogeochemistry of the Maqarin Area (1998) (4)
- Molecular and isotopic evaluation of the maturation history of the organic matter in an Ordovician aquiclude (Michigan Basin): Evidence for late diagenetic biodegradation (2018) (4)
- Origin and age of coastal groundwaters in Northern Oman (1988) (4)
- Anaerobic Ammonium Oxidation in Waste Water -An Isotope Hydrological Perspective (2011) (4)
- Natural Analogues of Cement: Overview of the Unique Systems in Jordan (2010) (3)
- Regulation of Fe 3+ -oxide Formation Among Fe 2+ -oxidizing Bacteria (2012) (3)
- The origin of methane in an Eastern Ontario aquifer (2019) (3)
- Environmental Isotopes in Groundwater Studies: Introduction to Environmental Isotopes in the Hydrologic Cycle (#825) (2013) (3)
- Origin and 87Rb–87Sr age of porewaters in low permeability Ordovician sediments on the eastern flank of the Michigan Basin, Tiverton, Ontario, Canada (2019) (3)
- Hydro-chemical evolution of groundwater in a sequence of Tertiary Formations in Northwest Oman (2016) (2)
- A Preliminary ion Source Background Study at Lalonde AMS (2019) (2)
- Coupling isotopic and piezometric data to infer groundwater recharge mechanisms in arid areas: example of Samail Catchment, Oman (2018) (2)
- Can‐AMS: The New Accelerator Mass Spectrometry Facility At The University Of Ottawa (2011) (2)
- High-resolution isotope geochemistry of the gas-hydrate-free gas transition in the JAPEX/JNOC/GSC et al. Mallik 5L-38 gas hydrate production research well (2005) (2)
- Chemo-isotopic tracing of the groundwater salinity in arid regions: An example of Shahrood aquifer (Iran) (2022) (2)
- Quantifying natural source zone depletion at petroleum hydrocarbon contaminated sites: A comparison of 14C methods. (2021) (2)
- Generation of high-pH groundwaters and H2 gas by groundwater–kimberlite interaction, northeastern Ontario, Canada (2021) (1)
- Stability of natural bacteriogenic iron oxides (BIOS) and their role in Sr cycling (2008) (1)
- Stardust Aerogel — A Noble Gas Experiment (2013) (1)
- Cometary Noble Gases Trapped by the Stardust Aerogel (2011) (1)
- Glacial lake outburst floods enhance benthic microbial productivity in perennially ice-covered Lake Untersee (East Antarctica) (2021) (1)
- Isotopic Analysis of Ammonium (δ15N), Nitrate (δ18O & δ15N) and Dissolved Carbon (δ13C) in Landfill Leachate Plum (2006) (1)
- Application of 13C isotope and carbon geochemistry to identify impact from landfill on surrounding groundwater (2009) (1)
- Iodine Systematics in the Ground Water of a Natural Setting (2001) (1)
- Assessment of Dissolved Organic Carbon Degradation in Landfill Leachate Using Hydrogen and Carbon Isotopes (2008) (1)
- BaCO3 targets produced from dissolved carbonate in groundwater for direct AMS measurement (2018) (1)
- "That's my country belonging to me" : aboriginal land tenure and dispossession in nineteenth century Western Victoria (2021) (1)
- Geoscientific site characterization of the proposed Deep Geologic Repository, Tiverton, Ontario (2010) (1)
- EVALUATION OF GROUNDWATER FLOW AND TRAVEL TIMES USING 14 C (2009) (1)
- ACID DRAINAGE AND ASSOCIATED SULPHATE MINERAL FORMATION NEAR EAGLE PLAINS, NORTHERN YUKON, CANADA: ANALOGUE TO THE MERIDIANI PLANUM SULPHATES ON MARS (2008) (1)
- Tracing landfill leachate impacts on groundwater using DOC geochemistry and δ13C measurements (2005) (0)
- Biogenic methane and bacterial community structure in Ordovician shales, Michigan Basin, Ontario (2012) (0)
- Crustal Noble Gas Isotopic Characteristics in Low-Permeability Ordovician Sedimentary Rock, Eastern Flank of the Michigan Basin (2021) (0)
- Applying Machine Learning to Investigate Metal Isotope Variations at the Watershed Scale: A Case Study with Lithium Isotopes Across the Yukon River Basin (2023) (0)
- A first investigation of groundwater geochemistry in the crystalline bedrock around Lake Saint-Jean, Quebec (2006) (0)
- Environmental Isotopes in Groundwater Studies: Isotope Tools to Date Groundwater (#851) (2014) (0)
- The Holocene paleolimnologic and ecohydrologic history of a meromictic lake, Brampton, Ontario. (2014) (0)
- LITHIUM CLAY MINERALIZATION BY REVERSE WEATHERING: LITHIUM ISOTOPE INSIGHTS INTO A NEW GENESIS MODEL FOR THE LARGEST KNOWN LITHIUM DEPOSIT IN NORTH AMERICA (2022) (0)
- Environmental Isotopes in Groundwater Studies: Tracing Carbon Sources and Reactions with Carbon-13 and Carbon-14 (#835) (2014) (0)
- Speleothem calcite crystal fabrics and isotopic signatures, Northern Yukon Territory, Canada (2010) (0)
- Origin and age of pore fluids in an Ordivician aquiclude in the Michigan Basin, Ontario (2012) (0)
- (Table S2) Molar gas ratios and stable oxygen and nitrogen gas isotopes of air entrapped in glacier ice, North America (2007) (0)
- Compound-specific isotope analysis of DOC in landfill Leachate (2003) (0)
- Evidence for the Long-term Barrier Integrity of Ordovician Rocks – The Deep Geologic Repository Project, Ontario, Canada (2009) (0)
- Radio- and stable carbon isotope analysis reveals minimal assimilation of petrogenic carbon into an oligotrophic freshwater food web after experimental spills of diluted bitumen. (2023) (0)
- Characterization of a TCE-Contaminated Aquifer Using Tritium-Helium Ages and Geochemical Tracers (2009) (0)
- Environmental Isotopes in Groundwater Studies: Applications of Oxygen-18 and Deuterium in Tracing Groundwater Origin and Mixing (#829) (2013) (0)
- AGE DATING OLD GROUNDWATERS (2013) (0)
- Tritium-helium dating of a TCE-contaminated aquifer for model validation (2009) (0)
- Microbial and geochemical controls on bacteriogenic iron oxide formation and fate (2009) (0)
- Use of Natural Tracers for Understanding Porewater Residence Time and Solute Transport: Challenges Encountered in Paleozoic Rocks of the Michigan Basin (2014) (0)
- Progress in Hydrogeochemistry: G. Matthess, F.H. Frimmel, P. Hirsch, H.D. Schulz and E. Usdowski (Editors). Springer Verlag, Berlin, 1992, 544 pp., US$ 139.00 (1993) (0)
- The Importance of the Koala in Aboriginal Society in Nineteenth-Century Queensland (Australia): A Reconsideration of the Archival Record (2021) (0)
- Hydrochemical characterisation of groundwater to understand the flow dynamics of the Saint-Mathieu/Berry Esker, Abitibi, Québec (2011) (0)
- Thawing of Massive Ground Ice in MEGA Slumps Drives Emergence of a New Fluvial Regime. (2011) (0)
- Using 13C isotopic analysis to assess soil carbon pools associated with tile drainage management during drier and wetter growing seasons (2017) (0)
- Tracing Groundwater Contamination at Landfill Sites Using Stable Isotope Technique (d18O, d2H and d13C) (2009) (0)
- Environmental Isotopes in Groundwater Studies: Nitrogen Species and Reactions in Contaminated Groundwater (#836) (2014) (0)
- Paleoclimatological Assessment of the Central Northwest Territories and Implications for the Long- Term Viability of the Tibbitt to Contwoyto Winter Ice Road: A Project Overview. (2013) (0)
- Soil CO2, CH4, and N2O fluxes over and between tile drains on corn, soybean, and forage fields under tile drainage management (2017) (0)
- Characterization of CH4 production pathways and estimating the rate of CH4 production using stable isotopes (2007) (0)
- Geochemistry of Perennial Groundwater Springs in the Mackenzie Basin (2009) (0)
- Proceedings of the Fourteenth International Conference on Accelerator Mass Spectrometry Ottawa, ON Canada August 14–18, 2017 (2020) (0)
- Isotope hydrogeology and geothermometry of the Mount Meager geothermal area, final report, August 1980 (1984) (0)
- Molar gas ratios and stable oxygen and nitrogen isotopes of air entrapped in ice, North America (2007) (0)
This paper list is powered by the following services:
Other Resources About Ian Clark
What Schools Are Affiliated With Ian Clark ?
Ian Clark is affiliated with the following schools: