This page is continuously out of date. For latest info download Lalonde CV 2019.pdf here

Dr. Stefan V. Lalonde

CNRS Researcher (CR2)

UMR 6538 Laboratoire Géosciences Océan

Institut Universitaire Européen de la Mer

Université de Bretagne Occidentale

Technopôle Brest-Iroise, Place Nicolas Copernic, Plouzané 29280 France

Tel. +33 (0) 2 98 49 86 97

Email: stefan.lalonde@univ-brest.fr

Expertise

Low-temperature aqueous and isotope geochemistry; Geobiology; Marine Chemistry; Sedimentology; Geochemical evolution of surface and marine environments in deep time; Geomicrobiology; Biomineralization.

Canadian citizen, fluent in English and French.

Responsibilities

IUEM Scientific Coordinator for the Pôle Spectrométrie Océan, 2015–present.

Principle Coordinator, LabexMER Axis 3 “Geobiological Interactions in Marine Environments”, 2015–2019.

Scientific Committee Member, Programme National de Planétologie, CNRS, 2014–present.

Editorial Advisory Board, Geobiology, 2014–present.

Reviewer for Nature, Science, Geology, Earth and Planetary Science Letters, Geobiology, Geochimica et Cosmochimica Acta, Chemical Geology, Geomicrobiology Journal, Geochemical Journal, Frontiers in Microbiology, Frontiers in Environmental Science.

Grant reviewer for the Natural Environment Research Council (UK), Deutsche Forschungsgemeinschaft (Germany).

Education

1986-1991     Sacred Heart School of Halifax (Halifax, NS, Canada)

1991-1993     Halifax Grammar School (Halifax, NS, Canada)

1994-1999     Whitefish High School (Whitefish, MT, USA)

1997-1998     1ère Scientifique, Lycée Blaise Pascal (Clermont Ferrand, France)

Bachelor of Science in Anatomy and Cell Biology

McGill University, Montreal, QC, 2005

Master of Science in Geomicrobiology

University of Alberta, Edmonton, AB, 2006

Department of Earth and Atmospheric Sciences

Thesis: Microbial Cell Surface Reactivity and Silicification

Supervisor: Dr. Kurt Konhauser

Doctor of Philosophy in Geochemistry

University of Alberta, Edmonton, AB, 2011

Department of Earth and Atmospheric Sciences

Thesis: Surface chemical reactivity and metal adsorptive properties of natural microbial mats, iron oxides, and infaunal mucus secretions

Supervisor: Dr. Kurt Konhauser

Awards

(2015) Region of Brittany support for preparation of an ERC proposal, Project INSPIRE: An Integrated Study of Earth's First Breath: Sedimentology, Geochemistry, Chronology, and Biology of Earth’s Earliest Traces of Oxygen. 10,275€ over 5 months.

(2015) Region of Brittany Strategy of Attractivity, Project S-GEOBIO: Biogeochemical cycling of sulfur at different timescales. 122,493€ over 2 years (2015-2016). Co-PI with Pierre Sans Jofre (IUEM). 18 months of Postdoctoral salary, some general operating funds, and 48,500€ for construction of an automated carbonate-associated sulfate and trace metal leach apparatus.

(2014) LabexMER Axe 3 “Interactions Géobiologiques” Exploratory Project PROXIM: Development of New Proxies to Assess the Environmental Impacts of Seafloor Hydrothermal Systems. €23,000 over 2 years (2014–2015). co-PI with Olivier Rouxel (IFREMER) with collaborators at IFREMER, Univ. Nantes, Univ. Hawaii (USA), Woods Hole Oceanographic Institution (USA).

(2014) NSF Creating New International Collaborations (CNIC), co-I with Dr. Russell Shapiro (Cal. State Univ. Chico, USA): U.S.-France Collaborative Study of the Alteration of Ancient Stromatolites: New Insights through Coupled Petrology and Isotope Geochemistry. $29,741 USD acquired.

(2013–2014) A total of 14 days synchrotron time for analysis of synthetic hydrothermal particules, beamline 18, Diamond Light Source (Oxford, UK) : 4 days in 2013 (ref. SP8624, Ni EXAFS), 4 days in spring 2014 (ref. SP9829, P EXAFS), and 6 days in fall 2014 (SP9803, Ni EXAFS). In collaboration with Caroline Peacock (Univ. Leeds, UK) and Kurt Konhauser (Univ. Alberta).

CNRS/Institut National des Sciences de l’Univers (INSU) small equipment grant (2013)

National award – 3,000€.

LABEX Mer Postdoctoral Fellowship (Nov. 2012 – Oct. 2014)

International award – 47,815 € plus 5,000 € operating funds per annum.

NSERC Postdoctoral Fellowship (Jan. 2011 – Dec. 2012)

National award - $40,000 CDN per annum.

J.H. Lord Travel Grant, Geoconferences Western Australia (2010)

Travel award to attend the 5th International Archean workshop and field excursion - AUD$2,000.

NSERC Doctoral Postgraduate Scholarship (2007-2009)

National award for research - $21,000 CDN per annum.

Alberta Ingenuity Graduate Scholarship (2007-2010)

Provincial award for research - $21,000 CDN per annum (or $7,000 per annum supplement in case of other major award)

Walter H. Johns Scholarship (2007 - 2010)

U of A institutional award to major award holders - $4,672 CDN per annum

John and Patricia Schlosser Environmental Scholarship (2009)

Institutional award for research relating to the Earth environment - $7,800 CDN

Andrew Stuart Memorial Prize (2009)

University of Alberta institutional award for excellence in doctoral research - $5,000 CDN

NASA Astrobiology Student Travel Grant (2007)

Travel award to attend NASA Astrobiology “Biosignatures in Ancient Rocks” meeting and field excursion (Sudbury, ON) - $1,200 CDN

Eugene Brody Graduate Scholarship (2005)

Institutional award for academic performance - $2800 CDN

Government of Alberta Graduate Scholarship (2005)

Provincial award for academic performance - $2000 CDN

Academic Employments

10/2013 - present

CNRS researcher (chargé de recherche 2ème classe)

UMR 6538 Domaines Océaniques

European Institute for Marine Studies, University of Brest

11/2012 - 09/2013

LABEX Mer Postdoctoral Fellow, metal and metalloid stable isotope geochemistry

UMR 6538 Domaines Océaniques and UMR 6539 Laboratoire des Sciences de l’Environnement Marin, European Institute for Marine Studies, University of Brest

01/2011 - 01/2013

NSERC Postdoctoral Fellow, metal and metalloid stable isotope geochemistry

UMR 6538 Domaines Océaniques, European Institute for Marine Studies, University of Brest

Teaching and Training Activities

10/2015–10/2018 – PhD co-supervisor (with Arnaud Agranier, IUEM/UBO, and Aradhna Tripati, UCLA and IUEM/UBO) of Ian Foster, École doctorale Sciences de la Mer (EDSM, IUEM): “Tracing continental emergence during the Precambrian using the geochemistry of banded iron formations”.

10/2015–10/2018 – PhD co-supervisor (with Kurt Konhauser, University of Alberta, Canada) of Marie Thoby, co-tutelle project between the École doctorale Sciences de la Mer (EDSM, IUEM). and the University of Alberta: “The stable isotope composition of Mo, Zn, and Fe in ancient stromatolites and other carbonates and their use for paleo-environmental reconstruction”.

01/2015–06/2015 – Primary supervisor of two 2nd year MSc projects, “The isotopic composition of Germanium in seawater: development of a preconcentration method and first analyses” and “The molybdenum isotope composition of modern and ancient stromatolites”. Co-financed by the University of Bristol (collaboration with Kate Hendry) and the University of Alberta (collaboration with Kurt Konhauser), respectively. Also in collaboration Pierre Sans Jofre (IUEM, second subject), Olivier Rouxel (IFREMER, both subjects), Phil Fralick (Lakehead U., second subject) and Dawn Sumner (UC Davis, second subject).

02/2014 – 8 hours of courses and exercises in geochemistry, MSc mineral resources module, UMR6538 LDO.

09/2014–09/2018 – PhD co-supervisor (with Kurt Konhauser, University of Alberta, Canada) of Leslie Robbins, NSERC Vanier scholar. “Evolution of the composition of chemical sediments in the Archean”.

09/2014–09/2017 – PhD co-supervisor (with Pierre Sans Jofre, UMR6538 LDO, and Mohamed Jebbar, UMR6197 LM2E), “METANIS : Evaluation of the effect of pression and temperature on anaerobic metabolisms, biogeochemical and isotopic approach.” École doctorale Sciences de la Mer (EDSM, IUEM). One half-funding from ARED (Région Bretagne) and the EDSM obtained 05/2014.

04/2014–04/2015 – Supervisor of LabexMER postdoc Aurelie Godrant (with Géraldine Sarthou, UMR6539 LEMAR, and Olivier Rouxel, IFREMER), “Iron and molybdenum stable isotope signatures of diazotrophic bacteria as potential tracers of nitrogen and metal limitation”. The continuation of the LabexMER postdoctoral fellowship I was attributed in 2012.

02–06/2014 – Sole supervisor of 2nd yr MSc student Etienne EMILY, thesis: “Evidence for Milankovitch cycles on Primitive Earth – A cyclostratigraphic approach”. The student’s project was classed #1 of 2nd yr MSc projects in 2014.

11–12/2013 – Four hours of courses and exercises in marine chemistry, MSc methods module, UMR6539 LEMAR.

02/2014 – Four hours of courses and exercises in geochemistry, MSc mineral resources module UMR6538 LDO

09-10/2014 – Sole supervisor of Gwenn Le Normand, 2nd year undergraduate, preparation for professional life project, “The silicon isotope composition of hydrothermal jaspers from the Løkken (0,47 Ga, Norvège) and Jerome (1,72 Ga, USA) deposits”. UBO/IUEM

09/2013–11/2013 – Ten hours of courses and exercises in geochemistry, 3rd year undergraduate geochemistry, Biologie / Science de la Terre et l’Univers program, l’UFR Sciences et Techniques, UBO.

02/2013 – Four hours of courses and exercises in geochemistry, MSc mineral resources module UMR6538 LDO

09/2009 - 04/2010

Teaching Assistant (T.A.) for SCI100, a newly-developed 27 credit comprehensive first year course

University of Alberta Earth and Atmospheric Sciences

01/2009 - 04/2009

T.A. for Geochemical Processes: Environmental Geochemistry (EAS 468/568)

University of Alberta Earth and Atmospheric Sciences

01/2008 - 04/2008

T.A. for Geochemistry II (EAS 420/520)

University of Alberta Earth and Atmospheric Sciences

09/2007 - 12/2007, 09/2006 - 12/2006, 09/2005 - 12/2005

T.A. for Geochemistry I (EAS 320)

University of Alberta Earth and Atmospheric Sciences

01/2006 - 04/2006, 01/2005 – 04/2005

T.A. for Earth and Life through Time (EAS 103)

University of Alberta Earth and Atmospheric Sciences

01/2004 - 08/2004

Research Assistant for Dr. Kurt Konhauser

Cultivation and silicification of filamentous N-fixing cyanobacteria

University of Alberta Earth and Atmospheric Sciences

05/2003 - 08/2003

Research Assistant for Dr. Kurt Konhauser (U of A) and Dr. Anna-Louise Reysenbach (PSU)

Cultivation and silicification of thermophilic chemolithoautotrophs

University of Alberta Earth and Atmospheric Sciences and Portland State University Biology

Missions and Field Experience

08/2003 – Yellowstone National Park, USA

Sampling and characterization of extant and silicified thermophilic chemolithoautotrophic communities, Lower Falls area, YNP. See other refereed contributions 1 and 2.

07/2005 – Willipa Bay Estuary, USA

Sampling and microelectrode profiling of oxygen, sulfide, and pH gradients in diverse infaunal invertebrate burrow walls in the intertidal zone. See refereed article 21.

2004 - 2006 – Cooking lake, near Edmonton, AB

Sediment coring and microelectrode profiling of oxygen, sulfide, and pH gradients in larval-burrowed sediments of seasonally euxinic Cooking lake, AB. See refereed article 20.

07/2005 – Yellowstone National Park, USA

Sampling, potentiometric titration and metal desorption assays of cyanobacterial mats, Firehole river area, YNP. See refereed article 19.

10/2005 – Yellowstone National Park, USA

Sampling, potentiometric titration and metal desorption assays of hydrous ferric oxides, red algal mats, and thermophilic chemolithoautotrophs, Norris geyser basin area, YNP. See refereed article 18.

08/2007 – Pipit Lake, Banff National Park, AB

Sediment coring, trap experiments, and on-site silicon porewater profiles investigating early diatom test dissolution in Pipet Lake, a high alpine helicopter-access-only lake in the Canadian rockies. See refereed article 9.

09/2007 – Yellowstone National Park, USA

Organized, fundraised, and lead the University of Alberta Geology graduate students’ association (ATLAS) annual field trip. Sole guide and chaperone for 25 graduate students during 5 days; visits included 2 days throughout YNP, tour of the Butte (MT) Berkley Pit copper mine/largest US EPA superfund site, and the Lewis and Clark (MT) speleothem system.

09/2007 – Archean and Paleoproterozopic sedimentary units of geobiological interest throughout northern ON and QC.

Participated in the 2007 NASA Astrobiology workshop “Biosignatures in Ancient Rocks” and subsequent 14 day sampling trip throughout the Canadian Precambrian shield. See refereed articles 4, 7, and 12.

02/2009 – Archipelago Los Roques, Caribbean Venezuela

Sampling and microelectrode profiling of microbial authigenic carbonates, extant stromatolites, associated microbial mats and porewaters in ephemeral and permanent hypersaline lagoons throughout the carbonate atoll and national park Los Roques, Venezuela. See refereed articles 3 and 5.

09/2010 – Archean and Paleoproterozoic sedimentary units of geobiological interest throughout Western Australia.

Participated in the 2010 5th International Archean Symposium in Perth, WA and subsequent 12-day sampling trip throughout Northwestern Australia. An additional week was spent collecting core samples from governmental and industry archives. See refereed article 4.

08/2013 – 4 days of beamtime at the Diamond Light Source, Oxfordshire, UK (beamtime reference SP8624). Preparation and Ni K-edge EXAFS analyses of Si-doped ferrihydrite for better understanding of trace metal uptake in ancient and modern hydrothermal particles.

05/2014 – 4 days of beamtime at the Diamond Light Source, Oxfordshire, UK (beamtime reference SP9828). P K-edge EXAFS analyses of P- and Si-doped ferrihydrite for better understanding of phosphorus uptake in ancient and modern hydrothermal particles.

06/2015 – 6 days of beamtime at the Diamond Light Source, Oxfordshire, UK (beamtime reference SP11705). Ni K-edge EXAFS analyses of diagenesis of Si-doped ferrihydrite for better understanding of trace element retention during diagenesis of modern and ancient hydrothermal particles.

Articles published in refereed journals

Haugaard R, Pecoits E, Lalonde SV, Rouxel OJ, and Konhauser KO. (2015) The Joffre Banded Iron Formation, Hamersley Group, Western Australia: Assessing the Palaeoenvironment through detailed Petrology and Chemostratigraphy. Precambrian Research, in press.

Konhauser KO, Robbins LJ, Pecoits E, Peacock C, Kappler A, and Lalonde SV. (2015) The Archean nickel famine revisited. Astrobiology, in press.

Dekov VM, Lalonde SV, Kamenov GD, Bayon G, Shanks III WC, Fortin D, Fouquet Y, and Moscati RJ. (2015) Geochemistry and mineralogy of a silica chimney from an inactive seafloor hydrothermal field (East Pacific Rise, 18°S). Chemical Geology 415, 126–140.

Lalonde SV and Konhauser KO (2015) Benthic perspective on Earth’s oldest evidence for oxygenic photosynthesis. Proceedings of the National Academy of Sciences 112, 995–1000.

Robbins LJ, Swanner ED, Lalonde SV, Eickhoff M, Paranich ML, Reinhard CT, Peacock CL, Kappler A, and Konhauser KO (2015) Limited Zn and Ni mobility during simulated iron formation diagenesis. Chemical Geology 402, 30–39.

Liu Y, Petrash DA, Mloszewska AM, Owttrim, GW, Alessi D, Lalonde SV, Zhou QX, and Konhauser KO (2015) Characterization and implications of the cell surface reactivity of Synechococcus sp. PCC 7002: Implications for metal sorption from seawater. Geochimica et Cosmochimica Acta 169, 30–44.

Petrash DA, Lalonde SV, González-Arismendi G, Gordon RA, Méndez JA, Gingras MK and Konhauser KO (2015) Can Mn–S redox cycling drive sedimentary dolomite formation? A hypothesis. Chemical Geology 404, 27–40.

Dekov VM, Egueh NM, Kamenov GD, Bayon G, Lalonde SV, Schmidt M, Liebetrau V, Munnik F, Fouquet Y, Tanimizu M, Awaleh MO, Guirreh I, and Le Gall B (2014) Hydrothermal carbonate chimneys from a continental rift (Afar Rift): Mineralogy, geochemistry, and mode of formation. Chemical Geology 387, 87-100.

Planavsky N, Asael D, Hofmann A, Reinhard CT, Lalonde SV, Ossa Ossa F, Knudsen A, Wang X, Pecoits E, Smith B, Beukes N, Bekker A, Johnson T, Konhauser KO, Lyons TW, and Rouxel OJ (2014) Evidence for Oxygenic Photosynthesis Half a Billion Years Before the Great Oxidation Event. Nature Geoscience 7, 283-286.

Swanner ED, Planavsky N, Lalonde SV, Robbins LJ, Bekker A, Rouxel O, Kappler A, Mojzsis SJ, and Konhauser KO (2014) Cobalt and marine redox evolution. Earth and Planetary Science Letters 390, 253-263.

Reinhard CT, Lalonde SV, and Lyons TW (2013) Oxidative sulfide dissolution on the early Earth. Chemical Geology 362, 44-55.

Partin CA, Lalonde SV, Planavsky NJ, Bekker A, Rouxel OJ, Lyons TW, and Konhauser KO (2013) Uranium in iron formations and the rise of atmospheric oxygen. Chemical Geology, in press.

Robbins LJ, Lalonde SV, Saito MA, Planavsky NJ, Mloszewska AM, Pecoits E, Scott CT, Dupont CL, Kappler A, and Konhauser KO (2013) Authigenic iron oxide proxies for marine zinc over geological time and implications for eukaryotic metallome evolution. Geobiology, doi: 10.1111/gbi.12036.

Partin CA, Bekker A, Planavsky NJ, Scott CT, Gill BC, Li C, Podkovyrov V, Maslov A, Konhauser KO, Lalonde SV, Love GD, Poulton SW, and Lyons TW (2013) Large-scale fluctuations in Precambrian atmospheric and oceanic oxygen levels from the record of U in shales. Earth and Planetary Science Letters, 369-370, 284-293.

Reinhard CT, Planavsky NJ, Robbins LJ, Partin CA, Gill BC, Lalonde SV, Bekker A, Konhauser KO, and Lyons TW (2013) Proterozoic ocean redox and biogeochemical stasis. Proceedings of the National Academy of Sciences, 110, 5357-5362.

Orange F, Lalonde SV, and Konhauser KO (2013) Experimental simulation of evaporation-driven siliceous sinter formation and microbial silicification in hot spring systems. Astrobiology 13, 163-176.

Orange F, Lalonde SV, and Konhauser KO (2013) The formation and preservation of Synechococcus elongatus cell moulds in simulated silica sinter: implications for the identification of microfossils. Geomicrobiology Journal 30, 327-336.

Petrash DA, Gingras MK, Lalonde SV, Orange F, Pecoits E, and Konhauser KO (2012) Dynamic controls on accretion and lithification of modern gypsum-dominated thrombolites, Los Roques, Venezuela. Sedimentary Geology 245-256, 29-47.

Konhauser KO*, Lalonde SV*, Planavsky NJ, Pecoits E, Lyons TW, Mojzsis SJ, Rouxel OJ, Barley ME, Rosìere C, Fralick PW, Kump LR, and Bekker A (2011) Aerobic bacterial pyrite oxidation and acid rock drainage during the Great Oxidation Event. Nature 478, 369-373. *Authors contributed equally.

Gingras M, Hagadorn JW, Seilacher A, Lalonde SV, Pecoits E, Petrash D, and Konhauser KO (2011) Possible evolution of mobile animals in association with microbial mats. Nature Geoscience 4, 372-375.

Petrash DA, Lalonde SV, Gingras MK, and Konhauser KO (2011) A surrogate approach to studying the chemical reactivity of burrow mucous linings in marine sediments. Palaios 26, 594-600.

Planavsky NJ, Rouxel OJ, Bekker A, Lalonde SV, Konhauser KO, Reinhard CT, and Lyons TW (2010). The evolution of the marine phosphate reservoir. Nature 467, 1088-1090.

Petrash DA, Lalonde SV, Raudsepp M, and Konhauser KO (2010) Assessing the importance of organic matrix materials in biofilm chemical reactivity: insights from proton and cadmium adsorption onto the commercially-available biopolymer alginate. Geomicrobiology Journal 28, 266-273.

Hobbs WO, Lalonde SV, Vinebrooke RD, Konhauser KO, Weidman RP, Graham MD, and Wolfe, AP (2010) Algal-silica cycling and pigment diagenesis in recent alpine lake sediments: mechanisms and paleoecological implications. Journal of Paleoliminology 44, 613-628.

Lalonde SV, Dafoe LT, Pemberton SG, Gingras MK, and Konhauser KO (2010) Investigating the Geochemical Impact of Burrowing Animals: Proton and Cadmium Adsorption onto the Mucus Lining of Terebellid Polychaete Worms. Chemical Geology 271, 44-51.

Baker MG, Lalonde SV, Konhauser KO, and Foght JM (2010) The role of extracellular polymeric substances in the surface chemical reactivity of Hymenobacter aerophilus, a psychrotolerant bacterium. Applied and Environmental Microbiology 76, 102-109.

Konhauser KO, Pecoits E, Lalonde SV, Papineau D, Nisbet EG, Barley ME, Arndt NT, Zahnle K, and Kamber BS (2009) Oceanic Nickel Depletion and a Methanogen Famine Before the Great Oxidation Event. Nature 458, 750-754.

Konhauser KO, Lalonde SV, and Phoenix, VR (2008) Bacterial Biomineralization: Where to from here? Geobiology 6, 298-302.

Lalonde SV, Smith DS, Owttrim GW, and Konhauser KO (2008) Acid-base properties of cyanobacterial surfaces I: influences of growth phase and nitrogen metabolism on cell surface reactivity. Geochimica et Cosmochimica Acta 72, 1257-1268.

Lalonde SV, Smith DS, Owttrim GW, and Konhauser KO (2008) Acid-base properties of cyanobacterial surfaces II: silica as a chemical stressor influencing cell surface reactivity. Geochimica et Cosmochimica Acta 722, 1269-1280.

Konhauser KO, Amskold L, Lalonde SV, Posth NR, Kappler A, and Anbar A (2007) Decoupling photooxidation from shallow-water BIF deposition. Earth and Planetary Science Letters 258, 87-100.

Konhauser KO, Lalonde SV, Amskold L, and Holland HD. (2007) Was there really an Archean phosphate crisis? Science 315, 1234.

Lalonde SV, Amskold L, McDermott TR, Inskeep WP, and Konhauser KO (2007) Chemical reactivity of microbe and mineral surfaces in hydrous ferric oxide depositing hydrothermal springs. Geobiology 5, 219-234.

Lalonde SV, Amskold L, Warren LA, and Konhauser KO (2007) Surface chemical reactivity and metal adsorptive properties of natural cyanobacterial mats from an alkaline hydrothermal spring, Yellowstone National Park. Chemical Geology 243, 36-52.

Gingras MK, Lalonde SV, Amskold L, and Konhauser KO (2007) Wintering Chironomid larvae mine oxygen. Palaios 22, 433-438.

Zorn ME, Lalonde SV, Gingras MK, Pemberton SG, and Konhauser KO (2006) Microscale distribution of oxygen in the burrow walls of seven intertidal invertebrates from Willapa Bay, Washington. Geobiology 4, 137-145.

Lalonde SV, Konhauser KO, Reysenbach AL, and Ferris FG (2005) The experimental silicification of Aquificales and their role in hot spring sinter formation. Geobiology 3, 41-52.

Other refereed contributions

Konhauser KO and Lalonde SV (2010) Microbial Silicification at Hot Springs. In Schroeder, PA (Editor), Clays of Yellowstone National Park. Clay Mineral Society Workshop Lecture Series volume 17, 94 pp.

Reysenbach A-L, Banta A, Civello S, Daly J, Mitchel K, Lalonde SV, Konhauser KO, Rustenholtz K, and Takacs-Vesbach C (2005) The Aquificales in Yellowstone National Park, In Inskeep WP and TR McDermott (Editors), Geothermal Biology and Geochemistry in Yellowstone National Park: proceedings of the Thermal Biology Institute workshop. Montana State University Publications, Bozeman, MT.

Non-refereed contributions (only 2007 – present listed)

Lalonde SV (2015) The banded iron formation (BIF) record of Precambrian seawater composition… and orbital parameters? University of Geneva, Invited Seminar.

Lalonde SV and Konhauser KO (2015) Benthic O2 Factories and Earth’s Earliest Oxidative Weathering. Goldschmidt Geochemistry Conference, Prague, CZ. Invited Oral Presentation.

Lalonde SV, Pecoits E, Beaumais A, Konhauser KO, and Philippot P (2015) A High Resolution Record of Paleoproterozoic Environmental Change: XRF Core Scan Data from the Turee Creek Drilling Project (TCDP), Hamersley and Turee Creek Groups, Western Australia. Goldschmidt Geochemistry Conference, Prague, CZ. Poster Presentation.

Robbins L, Lalonde SV, Mloszewska A, Kappler A, and Konhauser KO (2015) Testing 'Bio-Inorganic Bridges' Using the Iron Formation Record: Updates on Nickel and Zinc. Goldschmidt Geochemistry Conference, Prague, CZ. Oral Presentation.

Konhauser KO, Alessi D, Robbins L, Liu Y, Martinez R, Lalonde SV, Mloszewska A, Kappler A, and Li Y (2015) Marine Photoferrotrophs and their Trace Element Contributions to Precambrian Banded Iron Formations. Goldschmidt Geochemistry Conference, Prague, CZ. Invited Oral Presentation.

Mloszewska AM, Owttrim GW, Whitford DS, Lalonde SV, Kappler A, and Konhauser KO (2015) Silica Saved our Earliest Marine Cyanobacteria. Goldschmidt Geochemistry Conference, Prague, CZ. Oral Presentation.

Sans Jofre P, Trindade R, Tribovillard N, Lalonde SV, Nogueira A and Ader M (2015) Paleo-Redox Conditions in the Marinoan Glaciation Aftermath from Rare Earth Element, Araras Carbonate Platform (Brazil). Goldschmidt Geochemistry Conference, Prague, CZ. Poster Presentation.

Lalonde SV (2015) The chemical evolution of seawater through geological time: insights from Precambrian iron formations. Dalhousie University, Invited Seminar.

Lalonde SV (2015) Trace element evolution of seawater through geological time: insights from Precambrian iron formations. University of Bristol, Invited Seminar.

Lalonde SV (2014) How do microorganisms silicify? Experimental insights into microbial silicification mechanisms, rates, taphonomy, and physiological responses to entombment in silica. Muséum National d’Histoire Naturelle Paris, Invited Seminar.

Lalonde SV (2014) Trace element evolution of seawater through geological time as revealed by Precambrian iron formations. University of Leeds, Invited Seminar.

Lalonde SV (2014) Trace element evolution of seawater through geological time as revealed by Precambrian iron formations. Institut de Physique du Globe de Paris, Invited Seminar.

Konhauser KO and Lalonde SV (2014) Benthic Oxygenic Photosynthesis on the Archean Landmass. Goldschmidt Geochemistry Conference, Sacremento, USA. Invited Keynote.

Konhauser KO and Lalonde SV (2014) Oxidative Continental Weathering Before the Great Oxidation Event. 3rd International Geobiology Conference, Wuhan, China. Invited Keynote.

Mloszewska A, Lalonde SV, Whitford D, Owttrim G & Konhauser KO (2014) Archean Seawater as a Sunscreen: UV Attenuation and Cyanobacterial Growth in Fe- and Si-Rich Media.  Goldschmidt Geochemistry Conference, Sacremento, USA. Oral Presentation.

Konhauser KO and Lalonde SV (2014) Evolution of Oxidative Continental Weathering. EGU General Assembly, Vienna, Austria, Oral Presentation.

Swanner E, Planavsky N, Lalonde SV, Robbins LJ, Bekker A, Rouxel OJ, Konhauser KO, and Mojzsis SJ (2013) Sedimentary cobalt concentrations track marine redox evolution. EGU General Assembly, Vienna, Austria, Oral Presentation.

Lalonde SV, Konhauser KO, and Rouxel OJ (2012) Germanium and Silicon isotopic evolution of seawater inferred from Precambrian iron formations. Goldschmidt Geochemistry Conference, Montreal, Canada. Oral Presentation 13a/16:00.

Reinhard CT, Lalonde SV, and Lyons TW (2012) Oxidative weathering on the early Earth. Goldschmidt Geochemistry Conference, Montreal, Canada. Oral Presentation 15d/17:45.

Haugaard R, Pecoits E, Lalonde SV, Aubet N, von Kranendonk M, and Konhauser KO (2012) High-resolution chemostratigraphy of the 2.46 Ga Joffre banded iron formation, Western Australia. Goldschmidt Geochemistry Conference, Montreal, Canada. Poster Presentation 2a/6.

Robbins L, Lalonde SV, and Konhauser KO (2012) Paleo-marine trace element partitioning relationships recorded in Precambrian iron formations. Goldschmidt Geochemistry Conference, Montreal, Canada. Poster Presentation 13h/118.

Lalonde SV, Planavsky NJ, Rouxel OJ, Pecoits E, and Konhauser KO (2011) Molybdenum and Vanadium abundances in Banded Iron Formations and the onset of oxidative continental weathering. Goldschmidt Geochemistry Conference, Prague, Czech Republic. Oral Presentation 02i/11:00.

Konhauser KO, Lalonde SV, Planavsky NJ, Pecoits E, Lyons TW, Mojzsis SJ, Rouxel OJ, Barley ME, Rosìere C, Fralick PW, Kump LR, and Bekker A (2011) Chromium enrichment in iron formations record Earth’s first acid rock drainage during the Great Oxidation Event. Goldschmidt Geochemistry Conference, Prague, Czech Republic. Oral Presentation 02i/10:30.

Robbins LJ, Lalonde SV, and Konhauser KO (2011) The evolution of the marine Zn reservoir: Comparing the proteomic and sedimentary records. Goldschmidt Geochemistry Conference, Prague, Czech Republic. Poster Presentation 07b/2005.

Petrash DA, Lalonde SV, Gingras MK, and Konhauser KO (2011) Mn(IV) reduction: A driving mechanism for Mg2+-enrichment in shallow marine carbonates? Goldschmidt Geochemistry Conference, Prague, Czech Republic. Poster Presentation 07b/2004.

Rouxel OJ, Escoube R, Qi H, Lalonde SV, and Ponzevera E (2011) Germanium isotopic variations in seafloor hydrothermal systems and sedimentary rocks. EGU General Assembly, Vienna, Austria, Oral Presentation

Lalonde SV and Konhauser KO (2010) The Great Oxidation Event recorded by transition element abundances in banded iron formations. 5th International Archean Symposium, Perth, W. Australia, Oral Presentation Theme 4, 9/8/2010.

Lalonde SV, Pecoits E, and Konhauser KO (2010) Transition element abundances in Banded Iron Formations record the Great Oxidation Event. Goldschmidt Geochemistry Conference, Knoxville, Tennessee. Oral Presentation 02d/12:00.

Petrash D, Lalonde SV, Pecoits E, Gingras M and Konhauser KO (2010) Microbially-catalyzed cementation of modern gypsum-dominated thrombolites. Goldschmidt Geochemistry Conference, Knoxville, Tennessee. Oral Presentation 15j/15:15.

Petrash DA, Lalonde SV, Pecoits E, Gingras MK, and Konhauser KO (2010) Microbially-catalyzed cementation of modern gypsum-dominated thrombolites. Geocanada 2010 meeting, Calgary, AB. Poster Presentation.

Lalonde SV, Pecoits E, and Konhauser KO (2010) Shifting transition element abundances in Banded Iron Formation mark the Great Oxidation Event. Geocanada 2010 meeting, Calgary, AB. Oral Presentation.

Lalonde SV, Pecoits E, and Konhauser KO (2009) Partitioning of Si, P, V, Mo, and Ni during the experimental precipitation of ferric oxyhydroxides and their use as paleo-proxies in Banded Iron Formation. Goldschmidt Geochemistry Conference, Davos, Switzerland. Oral Presentation 07a/9:45.

Pecoits E, Lalonde SV, Barley, M, Kamber BS, and Konhauser KO (2009) Precambrian nickel sources and sinks. Goldschmidt Geochemistry Conference, Davos, Switzerland. Oral Presentation 10b/14:30.

Konhauser KO, Pecoits E, Lalonde SV, Papineau D, Nisbet EG, Barley ME, Arndt NT, Zahnle K, and Kamber BS (2009) Oceanic Nickel Depletion and a Methanogen Famine before the Great Oxidation Event. Goldschmidt Geochemistry Conference, Davos, Switzerland. Oral Presentation 07a/10:00.

Petrash DA, Lalonde SV, and Konhauser KO (2009) Experimental Investigation of Proton and Cadmium adsorption by Mucin, a commercially-available extracellular polymeric substance (EPS) analog. Goldschmidt Geochemistry Conference, Davos, Switzerland. Poster Presentation 17a/277.

Lalonde SV, Pecoits E, Papineau D, Nisbet EG, Barley ME, Arndt NT, Zahnle, Kamber BS, and Konhauser, KO (2008) Do Secular Trends in the Nickel Content of Banded Iron Formation Record a Methanogen Famine? American Geophysical Union Fall Meeting, San Francisco, CA. Poster B21B-0347.

Lalonde SV and Konhauser KO (2008) Proton Adsorption and in situ Metal Sequestration by Diverse Micobial Mats from Yellowstone National Park, USA. Goldschmidt Geochemistry Conference, Vancouver, BC. Oral Presentation 19a/11:00/4.

Pecoits E, Lalonde SV, Kamber BS and Konhauser KO (2008) REE and Y Compositions of Archean and Paleoproterozoic Banded Iron-Formations. Goldschmidt Geochemistry Conference, Vancouver, BC. Poster 03e/21/1.

Konhauser KO, Pecoits E, Ballard N and Lalonde SV (2008) Partitioning of P, V, Mo, and Ni during Precipitation of Ferric Oxyhydroxides and Implications for Archean Ocean Nutrient Availability during BIF Deposition. Goldschmidt Geochemistry Conference, Vancouver, BC. Poster 03e/18/1.

Lalonde SV and Konhauser KO (2008) Was There Really an Archean Ocean Phosphate Crisis? SETI Institute Astrobiology Science Conference, Santa Clara, California. Oral presentation 15-12-O.

Lalonde SV and Konhauser KO (2008) Elemental Partitioning from Natural Waters to Mineral and Microbial Assemblages in Yellowstone National Park, USA: Can Surface Adsorption Processes Provide a Biosignature? SETI Institute Astrobiology Science Conference, Santa Clara, California. Poster 24-28-P.

Pecoits E, Lalonde SV, and Konhauser KO (2008) Ni in Banded Iron-formations: Potential Evolutionary Implications. SETI Institute Astrobiology Science Conference, Santa Clara, California. Poster 24-38-P.

Konhauser KO and Lalonde SV (2007). Partitioning of trace metals into BIF and implications for Archean ocean nutrient availability. Royal Society of London Meeting on Photosynthesis, London, England. Oral Presentation.

Konhauser KO, Lalonde SV, and Anbar A (2007) Decoupling Photochemical Fe(II) Oxidation from Shallow-Water BIF Deposition. NASA Astrobiology workshop “Biosignatures in Ancient Rocks”, Sudbury, Ontario. Poster BAR-11.

Lalonde SV, Pecoits E, Wall K, and Konhauser KO (2007) Partitioning of P, V, Mo, and Ni during Precipitation of Ferric Oxyhydroxides and Implications for Archean Ocean Nutrient Availability during BIF Deposition. NASA Astrobiology workshop “Biosignatures in Ancient Rocks”, Sudbury, Ontario. Poster BAR-12.

Pecoits E, Lalonde SV, and Konhauser KO (2007) Ni in Banded Iron Formations: Its Origin and Potential Evolutionary Implications. NASA Astrobiology workshop “Biosignatures in Ancient Rocks”, Sudbury, Ontario. Poster BAR-17.

Lalonde SV and Konhauser KO (2007) Cell surface chemistry of naturally occurring microbes: Proton adsorption and in-situ metal sequestration by diverse microbial mats from Yellowstone National Park, USA. Frontiers in Mineralogy Conference, Cambridge, UK.

Konhauser KO, Lalonde SV, Amskold L, and Holland HD (2007) Was there really an Archean phosphate crisis? Frontiers in Mineralogy Conference, Cambridge, UK. Oral Presentation.