Dr. Sebastian Graber

Research Division 4: Dynamics of the Ocean Floor
Research Unit: Magmatic and Hydrothermal Systems
Marine Mineral Resources (MMR)

 

Office:

Raum: 8A-110
Telefon: +49 431 600-1431
E-Mail: sgraber(at)geomar.de

Address:

GEOMAR | Helmholtz-Zentrum für Ozeanforschung Kiel
Gebäude 8, Ostufer
Wischhofstr. 1-3
24148 Kiel

Education and Career

  • Since May 2016 PhD student at GEOMAR Helmholtz Centre for Ocean Research Kiel
  • 2013-2016 Marine Geosciences at the Christian-Albrechts-University Kiel
    Degree: Master of Science (Subject: Geology, Mineralogy and Geochemistry of the Irinovskoe Hydrothermal Field 13°20’N Mid-Atlantic Ridge)
  • 2010-2013 Geology at the Christian-Albrechts-University Kiel
    Degree: Bachelor of Science (Subject:  Formation of Thor’s Hammer -geochemical and bathymetric analyses of a submarine flat-top volcano on the Northern Kolbeinsey Ridge)
  • 2008-2010 Biological Science at the University of Konstanz

 

Scientific Interest

  • Formation and Geochemistry of submarine flattop volcanoes
  • Mineralogy and Geochemistry of marine massive sulfide deposits
  • Structural control of marine hydrothermal systems
  • Future of marine resource exploration and exploitation
  • Geological mapping of the Mid-Atlantic Ridge

 

Expeditions

  • SO271 INDEX2019 (BGR) - Exploration for massive sulfides in the German license area in the Indian Ocean (2019), RV Sonne
  • PE446 INDEX2018 (BGR) - Exploration for massive sulfides in the German license area in the Indian Ocean (2018), RV Pelagia
  • SO259 INDEX2017 (BGR) - Exploration for massive sulfides in the German license area in the Indian Ocean (2017), RV Sonne
  • M127 Metal fluxes and resource potential at the slow-spreading TAG mid-ocean ridge segment (2016), RV Meteor
  • KM1520  Mapping of the Kingman Reef-Palmyra Atoll (2015), RV Kilo Moana

 

Publications

  • Galley, C., Lelièvre, P., Haroon, A., Graber, S., Jamieson, J., Szitkar, F., et al. (2021). Magnetic and gravity surface geometry inverse modeling of the TAG active mound. Journal of Geophysical Research: Solid Earth, 126, e2021JB022228.
  • Graber, S., Petersen, S., Yeo, I., Szitkar, F., Klischies, M., Jamieson, J., Hannington, M.D., Rothenbeck, M., Wenzlaff, E., Augustin, N., and Stobbs, I. (2020) Structural control, evolution, and accumulation rates of massive sulfides in the TAG hydrothermal field. G3 - Geochemistry Geophysics Geosystems  doi: 10.1029/2020GC009185(Open Access)
  • Szitkar, F., Dyment, J. , Petersen, S., Bialas, J., Klischies, M., Graber, S., Klaeschen, D., Yeo, I. and Murton, B. J. (2019). Detachment tectonics at Mid-Atlantic Ridge 26°N. Scientific Reports, 9 (Article number: 11830).
  • Gehrmann, R. A. S. , North, L. A., Graber, S., Szitkar, F., Petersen, S., Minshull, T. A. and Murton, B. J. (2019). Marine mineral exploration with controlled‐source electromagnetics at the TAG hydrothermal field, 26°N Mid‐Atlantic Ridge. Geophysical Research Letters, 46 (11). pp. 5808-5816.

 

Conferences

  • Galley, C., Lelievre, P., Farquharson, C., Jamieson, J. W., Haroon, A. , Graber, S., Petersen, S.  und Szitkar, F. (2020) Modelling the geometry of the Trans-Atlantic Geotraverse seafloor massive sulphide deposit through magnetic surface geometry inversion. [Online Presentation] SEG Technical Program Expanded Abstracts, 2020 . pp. 1364-1368 
  • Graber, S., Petersen, S., Klischies, M. and Hannington, M. D. (2019) GIS - based approach to define permissive areas for SMS exploration along the slow-spreading Mid-Atlantic Ridge [Poster] At: 48. Underwater Mining Conference (UMC) 22.-26.09.2019, Sanya, Hainan, China.
  • Petersen, S., Hannington, M. D., Hölz, S. , Krätschell, A., Klischies, M., Graber, S., Anderson, M. O., Jamieson, J., Grant, H. and Murton, B. J. (2019) Same, same, but different: recent advances in our understanding of modern seafloor hydrothermal systems. [Talk] At: 15. Biennal SGA Meeting 2019., 27.-30.08.2019, Glasgow, UK.
  • Klischies, M., Petersen, S., Hannington, M. D., Graber, S. and Schwarz-Schampera, U. (2019) Assessing the regional geology of the Rodriguez Triple Junction and its influence on the location of hydrothermal activity. [Talk] At: Goldschmidt Conference 2019., 18.-23.08.2019, Barcelona, Spain.
  • Szitkar, F., Petersen, S., Murton, B., Yeo, I., Klischies, M., Graber, S., Schroeder, H., Bialas, J. and Dyment, J. (2018) Magnetic, acoustic and seismic data unveil the TAG Segment tectonic evolution (26°N, Mid-Atlantic Ridge). [Poster] At: AGU Fall Meeting 2018., 10.-14.12.2018, Washington, D.C., USA .
  • Gehrmann, R., Morton, M., Haroon, A., North, L., Tan, Y., Graber, S., Szitkar, F., Hölz, S., Petersen, S., Minshull, T., and Murton, B. (2018) Massive sulphide exploration with controlled source electromagnetics at the Mid-Atlantic Ridge [Talk] At:  Marine Minerals: A New Resource for the 21st Century?, 31.10.-1.11.2018. The Geological Society, London, England.
  • Graber, S., Petersen, S., Klischies, M., Szitkar, F. and Yeo, I. (2018) Development of exploration criteria for massive sulfides on slow-spreading ridges – lessons learned from the TAG hydrothermal field [Talk] At: Underwater Mining Conference (UMC) 11.09.2018, Bergen, Norway.
  • Gehrmann, R., Graber, S., Szitkar, F., Petersen, S., Hölz. S., Morton, M., Haroon, A., Ollington, B., Minshull, T. A. and Murton, B. (2018) Massive sulphide exploration at the Mid-Atlantic Ridge 26°N: an interdisciplinary geophysical study [Talk] At: Geological Society of London - William Smith Meeting, 03.07. 2018, London, England.
  • Gehrmann, R., Graber, S., Szitkar, F., Petersen, S., Hölz. S., North, L., Jegen, M., Gil, A., Vardy, M., Schröder, H., Bialas, J., Tan, Y., Attias, E., Sommer, M., Minshull, T. and Murton, B. (2017) Massive sulphide exploration at the Mid-Atlantic Ridge 26°N: an interdisciplinary geophysical study [Talk] At: AGU Fall Meeting 2017, 11.12. - 15.12.2017, New Orleans, USA.
  • Gehrmann, R., Hölz, S., North, L., Szitkar, F., Graber, S., Yeo, I., Petersen, S., Jegen, M., Gil, A., Vardy, M., Schröder, H., Bialas, J., Tan, Y., Attias, E., Sommer, M., Minshull, T. and Murton, B. (2017) Results from CSEM experiments at the Mid-Atlantic Ridge (TAG area, 26°N) and integration with geophysical data. [Talk] At: EMTF Conference., 25.-29.09.2017, Breklum, Germany.
  • Petersen, S., Szitkar, F., Graber, S., Augustin, N., Rothenbeck, M., Yeo, I. and Jamieson, J. (2017) The resource potential of the slow-spreading TAG segment at 26°N, Mid-Atlantic Ridge: evidence from AUV-based exploration [Talk] At: Proceedings of the 46. Underwater Mining Conference, 24.-26.09.2017, Berlin, Germany.
  • Petersen, S., Yeo, I., Jamieson, J., Szitkar, F., Graber, S., Augustin, N. and Rothenbeck, M. (2017) AUV-based exploration of the TAG segment at 26°N, Mid-Atlantic Ridge: implications for resource assessment and metal fluxes [Talk] At: Golschmidt Conference 2017, 13.-18.08.2017, Paris, France.
  • Gehrmann, R., Tan, I., Minshull, T., Ollington, B., Attias, E., North, L., Hölz, S., Sommer, M., Jegen, M., Szitkar, F., Graber, S., Petersen, S., Schröder, H., Bialas, J., Gill, A., Vardy, M. and Murton, B. (2017) Massive sulphide exploration with controlled source electromagnetics at the Mid-Atlantic Ridge [Talk] At: MARLEC 2017, 27.-30.06.2017, Liverpool, UK.