AG Petrology of the Ocean Crust

Room 5070

Department of Geosciences
University of Bremen
Klagenfurter Straße 4
28359 Bremen
Germany

Phone: +49 421 218 65408
Fax: +49 421 218 65429
Email: wakahl@uni-bremen.de

    Wolf-Achim Kahl

    Link zu den Publikationen


Research

Experimental investigations concerning the coupling of reaction progress and permeability
(Reinhart Koselleck Projekt)

  • combined experimental simulation and µ-CT observations

Peridotite-seawater interactions in different submarine geotectonic settings

  • investigation of rock samples from Mariana forearc and Mid-Atlantik Rigde

High-pressure Dehydration of Serpentinite and its Implications for Subduction Processes: insights from Exhumed Metamorphic Terrains
  • correlative X-ray µ-CT and EBSD analyses



Curriculum vitae


Scientific career

since Oct. 2012 Post-doctoral research fellow in a Reinhart Koselleck Project with Prof. Dr. W. Bach, University of Bremen, Germany
  • setup and management of the X-ray µ-CT laboratory
  • development and construction of an X-ray transparent flow-through apparatus to investigate water-rock interactions
2011
-2012
Post-doctoral research fellow in the Schwerpunktprogramm "Integrated Ocean Drilling Program" with Prof. Dr. W. Bach, University of Bremen, Germany
2007
-2011
Post-doctoral research fellow in the joint research project CO2-MoPa "Modelling and parameterisation of CO2-sequestration" with Prof. Dr. A. Holzheid, University of Kiel, Germany
  • setup and management of the µ-CT laboratory
2004
-2007
Post-doctoral research fellow R&D Cooperation "Automotive catalysts" with Dr. U. Klein, Umicore AG & Co. KG, Hanau; Germany and Prof. Dr. V. Schenk, University of Kiel, Germany
  • preparation of precious metal-bearing catalysts for XRF analysis
July 2000 Dr. rer. nat. in Mineralogy
1996
-2000
Doctorate studies, University of Bochum, Germany
  • setup of the High-temperature Solution-Calorimeter and DSC
  • thesis supervisor: Prof. Dr. Walter Maresch
Jan. 1996 Diploma in Mineralogy
1988
-1996
Studies in mineralogy, University of Kiel, Germany
  • supervisor of diploma thesis: Dr. John Schumacher

Synergistic activities

  • Webmaster of the International Confederation for Thermal Analysis and Calorimetry (ICTAC, http://www.ictac.org) since 2011

  • 2010: Appointment as Radiation Safety Official at the Institute for Geosciences Kiel, Germany

  • Webmaster of the German Society of Thermal Analysis (GEFTA, http://www.gefta.org) and guest of the board since 2004

  • Additional qualifications

    • 2009 Requisite qualification courses (Fachkundegruppen R2, R3, R4, R10) in radiation protection according to the German National X-Ray Ordinance at the Norddeutsches Seminar für Strahlenschutz, Kiel
    • IT skills Webdesign (HTML, PHP, mysql), application design (java, VB), databases



    Publications


    Publications (peer-reviewed)

    Türke, A., Jackson, M.S., Bach, W., Kahl, W.-A., Grzybowski, B., Marshall, B., Gudmundsson, M.T., Jørgensen, S.L. (2019) Design of the subsurface observatory at Surtsey volcano, Iceland. Sci. Dril., 25, 57-62.
    doi: 10.5194/sd-25-57-2019 |

    Dilissen, N., Hidas, K., Garrido, C. J., Kahl, W.-A., Sánchez-Vizcaíno, V. C., Padrón-Navarta, J. A. (2018) Textural evolution during high-pressure dehydration of serpentinite to peridotite and its relation to stress orientations and kinematics of subducting slabs: Insights from the Almirez ultramafic massif. Lithos, 320-321, 470-489.
    doi: 10.1016/j.lithos.2018.09.033 |

    Titschack, J., Baum, D., Matsuyama, K., Boos, K., Färber, C., Kahl, W.-A., Ehrig, K., Meinel, D., Soriano, C., Stock, S.R. (2018) Ambient occlusion – A powerful algorithm to segment shell and skeletal intrapores in computed tomography data, Computers and Geosciences, 115, 75-87.
    doi: 10.1016/j.cageo.2018.03.007 |

    Kahl, W.-A., Dilissen, N., Hidas, K., Garrido, C. J., López-Sánchez-Vicaíno, V. and Román-Alpiste, M. J. (2017): 3-D microstructure of olivine in complex geological materials reconstructed by correlative X-ray µ-CT and EBSD analyses. Journal of Microscopy 268, 193-207.
    doi:10.1111/jmi.12598 |

    Wisshak, M., Titschack, J., Kahl, W.-A., and Girod, P. (2017): Classical and new bioerosion trace fossils in Cretaceous belemnite guards characterised via micro-CT. Foss. Rec., 20, 173-199.
    doi:10.5194/fr-20-173-2017 |

    Jöns, N., Kahl, W.-A., and Bach, W. (2017): Reaction-induced porosity and onset of low-temperature carbonation in abyssal peridotites: insights from 3D high-resolution microtomography. Lithos, 268-271, 274-284.
    doi:10.1016/j.lithos.2016.11.014 |

    Kahl, W.-A., Hansen, C., and Bach, W. (2016) A new X-ray-transparent flow-through reaction cell for a μ-CT-based concomitant surveillance of the reaction progress of hydrothermal mineral–fluid interactions. Solid Earth, 7, 651-658.
    doi:10.5194/se-7-651-2016 |

    Soltan, A.M.M., Kahl, W.-A., Abd EL-Raoof, F., Abdel-Hamid El-Kaliouby, B., Abdel- Kader Serry, M., Abdel-Kader, N.A. (2016) Lightweight aggregates from mixtures of granite wastes with clay. Journal of Cleaner Production, 117, 139-149.
    doi: 10.1016/j.jclepro.2016.01.017 |

    Kahl, W.-A., Jöns, N., Bach, W., Klein, F., Alt, J.C. (2015) Ultramafic clasts from the South Chamorro serpentine mud volcano reveal a polyphase serpentinization history of the Mariana forearc mantle. Lithos, 227, 1-20.
    doi:10.1016/j.lithos.2015.03.015 |

    Klein, F., Grozeva, N.G., Seewald, J.S., McCollom, T., Humphris, S.E., Moskowitz, B., Berquó, T.S. & Kahl, W.-A. (2015) Experimental constraints on fluid-rock reactions during incipient serpentinization of harzburgite. American Mineralogist, 100, 991-1002.
    doi: 10.2138/am-2015-5112 |

    Klein, F., Bach, W., Humphris, S.E., Kahl, W.-A., Jöns, N., Moskowitz, B. & Berquó, T.S. (2014) Magnetite in seafloor serpentinite−−Some like it hot. Geology 42(2), 135-138.
    doi: 10.1130/G35068.1 |

    Kahl, W.-A., Hinkes, R., Feeser, V. & Holzheid, A. (2013) Microfabric and anisotropy of elastic waves in sandstone - An observation using high-resolution X-ray microtomography. Journal of Structural Geology, 49, 35-49.
    doi: 10.1016/j.jsg.2013.01.006 |

    Kiel, S., Kahl, W.-A. & Goedert, J. L. (2013) Traces of the bone-eating annelid Osedax in Oligocene whale teeth and fish bones. Paläontologische Zeitschrift, 87, 161-167.
    doi:10.1007/s12542-012-0158-9 |

    Kahl, W.-A. & Ramminger, B. (2012) Non-destructive fabric analysis of prehistoric pottery using high-resolution X-ray microtomography: a pilot study on the late Mesolithic to Neolithic site Hamburg-Boberg. Journal of Archaeological Science, 39, 2206-2219.
    doi:10.1016/j.jas.2012.02.029 |

    Majzlan, J., Drahota, P., Filippi, M., Grevel, K.-D., Kahl, W.-A., Plášil, J., Boerio-Goates, J. & Woodfield, B. F. (2012) Thermodynamic properties of scorodite and parascorodite (FeAsO4·2H2O), kaňkite (FeAsO4·3.5H2O), and FeAsO4. Hydrometallurgy, 117-118, 47-56.
    doi:10.1016/j.hydromet.2012.02.002 |

    Soltan, A. M. M., Kahl, W.-A., Wendschuh, M. & Hazem, M. M. (2012) Microstructure and reactivity of calcined mud supported limestones. Mineral Processing and Extractive Metallurgy (Trans. Inst. Min Metall. C), Vol. 121, 5-11.
    doi: 10.1179/1743285511Y.0000000024 |

    Soltan, A. M. M., Kahl, W.-A., Hazem, M. M., Wendschuh, M. & Fischer, R. X. (2011) Thermal microstructural changes of grain-supported limestones. Mineralogy and Petrology, Vol. 103, 9-17.
    doi: 10.1007/s00710-011-0151-0 |

    Kiel, S., Kahl, W.-A. & Goedert, J. L. (2011) Osedax borings in fossil marine bird bones. Naturwissenschaften, Vol. 98, Number 1, 51-55.
    doi: 10.1007/s00114-010-0740-5 |

    Kiel, S., Goedert, J. L., Kahl, W.-A. & Rouse, G. W. (2010) Fossil traces of the bone-eating worm Osedax in early Oligocene whale bones. PNAS, Vol. 107, No. 19, 8656-8659.
    doi: 10.1073/pnas.1002014107 |

    Grevel, K.-D., Kahl, W.-A., Majzlan, J., Navrotsky, A., Lathe, C. & Fockenberg, T. (2005) Thermodynamic properties of magnesiochloritoid. Eur. J. Mineral., 17, 587-598.
    doi: 10.1127/0935-1221/2005/0017-0587 |

    Kahl , W.-A., Maresch, W. V. & Welch, M. D. (2003) Enthalpy of formation of pargasite by high temperature solution calorimetry and heat capacity of pargasite and fluoropargasite by differential scanning calorimetry. Eur. J. Mineral., 15, 617-628.
    doi: 10.1127/0935-1221/2003/0015-0617 |

    Kahl , W.-A. & Maresch, W. V. (2001) Enthalpies of formation of tremolite and talc by high temperature solution calorimetry – a consistent picture. Amer. Mineral., 86, 1345-1357.
    link to Vol. 86, No. 11-12 |

    Grevel, K.-D., Navrotsky, A., Kahl, W.-A., Faßhauer, D. W. & Majzlan, J. (2001) Thermodynamic data of the high-pressure phase Mg5Al5Si6O21(OH)7 (Mg-sursassite). Phys. Chem. Minerals, 28, 475-487.
    doi: 10.1007/s002690100175 |

    Kahl, W.-A. & Schumacher, J.C. (2000) Multiple pyroxene and amphibole assemblages in the amphibolite facies: bulk compositional controls. Amer. Mineral., 85, 1606-1616.
    link to Vol. 85, No. 11-12 |

    Publications (non peer-reviewed)

    Wisshak, M. , Titschack, J. , Kahl, W.-A. and Girod, P. (2017) Classical and new bioerosion trace fossils in Cretaceous belemnite guards characterised via micro-CT, supplementary material. PANGAEA Documentation, Bremerhaven, PANGAEA.
    hdl:10013/epic.50826 |

    Kahl, W.-A., Ramminger, B. (2012) Zerstörungsfreie Analysen prähistorischer Keramik mittels hoch auflösender Mikro-Computertomographie am Beispiel spätmesolithischer und neolithischer Funde aus Hamburg-Boberg. In: B. Ramminger/O. Stilborg (Eds.), Naturwissenschaftliche Analysen vor- und frühgeschichtlicher Keramik II: Methoden, Anwendungsbereiche, Auswertungsmöglichkeiten. Universitätsforschungen zur prähistorischen Archäologie 216, 2012, 59-95.

    Conference Abstracts

    Kelemen, P., de Obeso, J., Manning, C., Godard, M., Bach, W., Cai, M., Choe, S., Coggon, J., Ellison, E., Eslami, A., Evans, K., Harris, M., Kahl, W.-A., Matter, J., Michibayashi, K., Okazaki, K., Pezard, P., Teagle, D., Templeton, A., and OmanDP Science Team (2019) Peridotite alteration in OmanDP cores. European Geosciences Union General Assembly 2019, Vienna, Austria, Geophysical Research Abstracts 21, EGU2019-4436-2.

    Türke, A., Jackson, M.D., Bach, W., Kahl, W.-A., Jørgensen, S.L., and Gudmundsson, M.T. (2019) Design and implementation of a submarine borehole observatory at Surtsey Volcano, Iceland. European Geosciences Union General Assembly 2019, Vienna, Austria, Geophysical Research Abstracts 21, EGU2019-18812-1.

    Benjamin M Tutolo, B.M., Eslami, A., Evans, K.A., Kahl, W.-A., Godard, M., Kelemen, P.B., Michibayashi, M., Takazawa, E., Teagle, D.A.H. (2018) A Reconnaissance Petrographic Study of Opaque Mineral Assemblages in Peridotites and Mafic Dykes from the Oman Drilling Project Holes BA1B, BA3A and BA4A. AGU Fall Meeting 2018, V13E-0137.

    Kelemen, P.B., Bach, W., Evans, K.A., Eslami, A., Farough, A., Hamada, M., Ichiyama, Y., Kahl, W.-A., Matter, J.M., Pezard, P.A., Paukert Vankeuren, A.N., Godard, M., Michibayashi, K., Choe, S., and Coggon, J.A. (2019) Correlated variation in vein type, vein frequency, pH, oxygen fugacity and depth in Oman Drilling Project Holes BA1B, BA3A and BA4A. AGU Fall Meeting 2018, V12B-03.

    Kahl, W.-A., Bach, W, Littmann S. (2018) Fluid path-dependent, hydrodynamic micro-environments govern serpentinization textures of harzburgite hydration in a flow-through reaction cell. European Geosciences Union General Assembly 2018, 9-13 April, 2018, Vienna, Austria, Geophysical Research Abstracts 20, EGU2018-13566.

    Lisker, F., Emmel, B., Hewawasam, T., Kahl, W.-A., Schlegel, A. (2018) Sri Lanka: the inverted hinge of Gondwana. European Geosciences Union General Assembly 2018, 9-13 April, 2018, Vienna, Austria, Geophysical Research Abstracts 20, EGU2018-13360.

    Dilissen, N., Hidas, K., Garrido, C.J., López Sánchez-Vizcaíno, V., Kahl, W.-A., Román-Alpiste, M.J. (2018) Fluid infiltration-driven morphological transition during prograde olivine growth formed by high-pressure Atg-serpentinite dehydration. European Geosciences Union General Assembly 2018, 9-13 April, 2018, Vienna, Austria, Geophysical Research Abstracts 20, EGU2018-4598.

    Los, C.L., Kahl, W.-A., Bach, W. (2017) Length scales of reactive transport in basalt: Hydrothermal flow-through experiments and anhydrite precipitation. AGU Fall Meeting 2017, New Orleans, USA.

    Kahl, W.-A., Bach, W., Jöns, N. (2017) Oxidative alteration of partially serpentinized harzburgite in a flow-through reaction cell: reaction of olivine to Fe-oxyhydroxide phases and serpentine at 120 °C. GeoBremen2017, A-849.

    Jöns, N., Kahl, W.-A., Bach, W. (2017) Reaction-induced porosity and low-temperature carbonation of abyssal peridotites from the Mid-Atlantic Ridge. GeoBremen2017, A-751.

    Beyer, L., Albers, E., Kahl, W.-A., Bach, W. & Exp. 366 Scientists (2017) Polyphase alteration of ultramafic clasts from a serpentinite mud volcano (Mariana forearc) unveil shallow subduction zone processes. GeoBremen2017, A-746.

    Kahl, W.-A., Türke, A., Bach, W. (2017) Assessing microbial, mineralogical, and hydrothermal processes in the ICDP borehole on Surtsey: a combined observatory and experimental approach. GeoBremen2017, A-723.

    Los, C., Kahl W.-A., Bach, W. (2017) Reactive transport in basalt: sulfate precipitation in flow-through experiments. GeoBremen2017, A-611.

    Fischer, C., Kurganskaya, I., Kahl, W.-A., Bollermann, T., Prüsse, F., Bach, W., Luttge, A. (2017) Upscaling of Dissolution Rate Contributors from the Atomic Scale to the Macroscopic Scale. Goldschmidt Abstracts, 2017.

    Bach, W., Kahl, W.-A., Türke, A. (2017): Rates and processes of tephra alteration in Surtsey volcano: a combined observational and experimental approach. IODP/ICDP Kolloquium, Braunschweig, Deutschland.

    Kahl, W.-A., Hidas, K., Dilissen, N., Garrido, C.J., Lopez-Sanchez Vizcaino, V., Roman-Alpiste, M.J. (2017) Reconstruction of the 3-D Shape and Crystal Preferred Orientation of Olivine: A Combined X–ray –CT and EBSD-SEM approach. European Geosciences Union General Assembly 2017, 23-28 April, 2017, Vienna, Austria, Geophysical Research Abstracts 17, EGU2017-8061.

    Dilissen, N., Hidas, K., Garrido, C.J., Lopez-Sanchez Vizcaino, V., Kahl, W.-A., Padron-Navarta, J.A., Roman-Alpiste, M.J. (2017) Relationship Between Far Field Stresses, Fluid Flow and High-Pressure Deserpentinization in Subducting Slabs: a Case Study From the Almirez Ultramafic Massif. European Geosciences Union General Assembly 2017, 23-28 April, 2017, Vienna, Austria, Geophysical Research Abstracts 17, EGU2017-16454.

    Dilissen, N., Hidas, K., Garrido, C.J., Lopez-Sanchez Vizcaino, V., Kahl, W.-A., Padron-Navarta, J.A., Roman-Alpiste, M.J. (2017) Couplings between far field stresses, fluid flow and high-pressure deserpentinization in subducting slabs: insight from the Almirez ultramafic massif. SIP International Conference Barcelona, 39, 45-46.

    Los, C.L., Kahl, W.-A., Plümper, O., Bach, W. (2016): Formation of replacive sulphide in anhydrite chimneys. Jährliches DMG Sektionstreffen 2016 Geochemie-Petrologie-Petrophysik, Bremen.

    Dilissen, N., Kahl, W.-A., Garrido, C.J., Sanchez-Vizcaino, V.L., Hidas, K. (2016) Deciphering the dynamics of olivine nucleation and growth during antigorite breakdown. European Geosciences Union General Assembly 2016, 17-22 April, 2016, Vienna, Austria, Geophysical Research Abstracts 16, EGU2016-5743.

    Klein, F., Bach, W., Humphris, S.E., Kahl, W.-A., Jöns, N., Moskowitz, B., Berquó, T.S. (2014) Low-Temperature Serpentinization Produces Abundant Hydrogen within the Temperature Limits of Life. Goldschmidt Abstracts, 2014, 1276.

    Türke. A., Bach, W., Kahl, W.-A., Klügel, A. (2014): Palagonitization of basalt glass in the flanks of mid-ocean ridges: impications for bioenergetics of oceanic intracrustal ecosystems. 4th Nordic Astrobiology Conference, Bergen, Norwegen.

    Türke, A., Bach, W., Kahl, W.-A., Klügel, A. (2013): Palagonitization of basalt glass in the flanks of mid-ocean ridges: impications for bioenergetics of oceanic intracrustal ecosystem. DMG/GV Meeting, Tübingen, Deutschland.

    Bach, W., Kahl, W.-A., Jöns, N., Türke, A., Plümper, O. (2013) Rocky Constraints on Catabolic Energy Supply in the Subseafloor. Mineralogical Magazine, 77(5) 638.

    Kahl, W.-A., Jöns, N., Bach, W., Klein, F. (2013) Polyphase serpentinization history of Mariana forearc mantle: observations on the microfabric of ultramafic clasts from ODP Leg 195, Site 1200. Geophysical Research Abstracts 15, EGU2013-13864.

    Klein, F., Bach, W., Kahl, W.-A., Humphris, S. (2013) Redox Controls and Reaction Pathways during Serpentinization of Abyssal Peridotite. Geophysical Research Abstracts 15, EGU2013-8752.

    Kahl, W.-A., Holzheid, A. (2013) High-resolution 3D X-ray microtomography as tool to investigate size distribution of grain phase and pore space in sandstones. Geophysical Research Abstracts 15, EGU2013-7640.

    Jöns, N., Kahl, W.-A., Bach, W. (2013) Reaction-induced porosity and onset of carbonation in abyssal peridotites: insights from 3D high-resolution microtomography. Geophysical Research Abstracts 15, EGU2013-5412.

    Kahl, W.-A., Ramminger, B., and Helfert, M. (2012) X-ray microtomography: a non-destructive tool to visualise different links in the production chain of ancient pottery. European Mineralogical Conference, Vol. 1, EMC2012-280, 2012.

    Kahl, W.-A., Jöns, N. (2012) X-ray microtomography as a visualization tool for fluid-rock interaction in the oceanic crust: insights into serpentinisation and low-temperature seawater alteration. SkyScan Usermeeting 2012, 03.-05.04.2012, Brussels, Belgium. Micro-CT User Meeting Abstract Book ISBN 9789081678100, p. 21-26.

    Kahl, W., Helfert, M., Ramminger, B. (2012) Potsherds of late Mesolithic/Neolithic age shed light on prehistoric ceramicist's workshop. SkyScan Usermeeting 2012, 03.-05.04.2012, Brussels, Belgium. Micro-CT User Meeting Abstract Book ISBN 9789081678100, p. 218-223.

    Kahl, W.-A., Jöns, N., Bach, W., & Klein, F. (2012) Polyphase serpentinization history of Mariana forearc mantle: observations on ultramafic clasts from ODP Leg 195, Site 1200. IODP-ICDP Kolloquium Kiel, p.84.

    Grevel, K.-D., Majzlan, J., Kahl, W.-A., Woodfield, B.F., & Boerio-Goates, J. (2012) Thermodynamics of scorodite, FeAsO4*2 H2O. EMPG 2012 – Abstract volume, p. 70.

    Kahl, W.-A., Jöns, N., Bach, W., & Klein, F. (2011) Polyphase serpentinization history of Mariana forearc mantle: observations on ultramafic clasts from ODP Leg 195, Site 1200. Mineralogical Magazine 75, p.1134.

    Kahl, W.-A., Feeser, V., Hinkes, R., Holzheid, A. (2011) Anisotropy of elastic waves in sandstone: correlation with microstructural observations. SkyScan Usermeeting 2011, 13.-15.04.2011, Leuven, Belgium. Micro-CT User Meeting Abstract Book ISBN 9789081678100, p. 196.

    Kahl, W., Ramminger, B. (2011) Potsherds of late Mesolithic/Neolithic age shed light on prehistoric ceramicist's workshop. SkyScan Usermeeting 2011, 13.-15.04.2011, Leuven, Belgium. Micro-CT User Meeting Abstract Book ISBN 9789081678100, p. 248.

    Kiel, S., Kahl, W.-A., Godert, J. L., Rouse, G. W. (2011) Osedax borings in fossil early Oligocene marine bird bones. SkyScan Usermeeting 2011, 13.-15.04.2011, Leuven, Belgium. Micro-CT User Meeting Abstract Book ISBN 9789081678100, p. 244.

    Beier, K., Kahl, W.-A., Holzheid, A. (2011) Dissolution experiments of potential reservoir materials in CO2-bearing saline fluids. IOPD workshop GEOLOGICAL CARBON CAPTURE & STORAGE IN MAFIC AND ULTRAMAFIC ROCKS. Muscat, Sultanate of Oman 8-10 January, 2011.

    Kahl, W.-A., Holzheid, A. (2010) Estimated and "true" geometric surfaces and their possible impact on experimentally and thermodynamically derived mineral dissolution and precipitation rates in CO2-brine-mineral reactions. DMG Tagung, Münster 19.09.-22.09.2010, Presentation S04-T02, p. 43.

    Beier, K., Kahl, W.-A., Holzheid, A. (2010) Dissolution rates of calcite in CO2-bearing brines - a comparison of experimental and literature data. DMG Tagung, Münster 19.09.-22.09.2010, Presentation S04-T08, p. 52.

    Soltan, A. M., Kahl, W.-A., Wendschuh, M., Hazem, M. (2010) Impact of thermal microstructural changes of Egyptian limestones on quicklime reactivity: mud-supported limestones. DMG Tagung, Münster 19.09.-22.09.2010, Poster P4-07, p. 242.

    Kahl, W.-A., Hinkes, R., Feeser, V., Holzheid, A. (2010) Anisotropy of sandstones. SkyScan User Meeting 2010, 07.-09.07.2010, Mechelen, Belgium, Presentation #41.

    Kiel, S., Kahl, W.-A., Godert, J. L., Rouse, G. W. (2010) 30 Million year old traces of the bone-eating worm Osedax. SkyScan User Meeting 2010, 07.-09.07.2010, Mechelen, Belgium, Poster #2.

    Beier, K., Kahl, W.-A., Holzheid, A. (2010) Influence of temperature and reactive surface on dissolution rates of carbonates in CO2-bearing brine. Geophysical Research Abstracts, Vol. 12, EGU2010-0, EGU General Assembly 2010

    Kahl, W.-A., Holzheid, A. (2009) X-ray computed microtomography in geoscience: two case studies. DMG Tagung, Halle 13.09.-16.09.2009, Abstract #118 (CD-ROM).

    Beier, K., Kahl, W.-A., Holzheid, A. (2009) CO2-Sequestration on the laboratory scale - first results of chemical interaction processes between injected CO2, saline fluids and potential reservoir materials. DMG Tagung, Halle 13.09.-16.09.2009, Abstract #24 (CD-ROM).

    Grevel, K.-D., Kahl, W.-A. (2009) High-temperature oxide melt calorimetry: the enthalpy of formation of topaz-OH, Al2SiO4(OH)2. Micro-Analysis, Processes, Time (MAPT): Annual Meeting 2009 of the Mineralogical Society of Great Britain and Ireland, 31.08. - 02.09.2009, Edinburgh, United Kingdom.

    Kahl, W.-A., Holzheid, A. (2009) Quantifying porosities in sandstones: How to assess accuracy?. SkyScan User Meeting 2009, 22.-24.04.2009, Ghent, Belgium, Presentation #41.

    Kahl, W.-A., Beier, K., and Holzheid, A. (2008) Determination of CO2-Solubilities in Complex Brines as Part of an Experimental Study on CO2-Sequestration on the Laboratory Scale, DMG Tagung, Berlin, 14.-17.09.2008, Abstract #204 (CD-ROM).

    Grevel, K.-D., Navrotsky, A., Kahl, W.-A., Majzlan, J. & Lathe, C. (2003) Thermodynamic data of Mg-chloritoid, EGS-AGU-EUG conference, Nice, France.

    Grevel, K-D; Navrotsky, A.; Kahl, W.- A.; Majzlan, J.; Lathe, C. (2003) Thermodynamic data of Mg-chloritoid, 81. Jahrestagung der Deutschen Mineralogischen Gesellschaft (Bochum 2003), 70.

    Kahl, W.-A., Fockenberg, T., Gottschalk, M., Wolf- I. & Maresch, W. V. (2000) Crystal chemistry and enthalpy of formation of synthetic glaucophanic amphibol, Berichte der Deutschen Mineralogischen Gesellschaft, Beih. z. Eur. J. Mineral., 12, No. 1, 89.

    Kahl, W.-A. & Maresch, W.V. (1999) Tremolite: Enthalpy of formation calculated from high-temperature, drop-solution calorimetry, Berichte der Deutschen Mineralogischen Gesellschaft, Beih. z. Eur. J. Mineral., 11, 114.

    Schumacher, J.C. & Kahl, W.-A. (1999) Mineralogy and petrology of amphibole- and pyroxene-bearing assemblages from Mn-Quartzites (coticules), Southwestern New Hampshire, USA [invited], EOS supplement, 80, 359.


    Dissertation

    Kahl, W.-A. (2000) Hochtemperatur-Lösungskalorimetrie und Leistungsdifferenzkalorimetrie zur thermodynamischen Charakterisierung von Mineralen. Dissertation, Ruhr-Universität Bochum


    Diplomarbeit

    Kahl, W.-A. (1995) Mineralchemie und Phasenbeziehungen in granat-, amphibol- und erzführenden Quarziten von Südneuengland, USA, unpublished Diplom thesis, Universität Kiel, 151 pp.