People at Fort Hoofddijk

Tom Mullender
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Mr. T.A.T. Mullender
Paleomagnetic Laboratory
Fort Hoofddijk
Faculty of Earth Sciences, Utrecht University
Faculty of Earth Sciences, 
Utrecht University 
Budapestlaan 17
3584 CD Utrecht 
The Netherlands 

Phone +31 30 253 1671
Fax +31 30 243 1677


Activities of Tom Mullender

Development, improvement and maintenance
of paleomagnetic equipment

Tom Mullender, as our electronics technician, has designed, developed, built and improved numerous instruments for paleomagnetic and rock magnetic research. One of his highlights is his horizontal Curie balance design with a high sensitivity, enabling (sediment) samples to be measured without having to do magnetic extraction. 
The Curie Balance
A very sensitive Curie balance (Mullender et al., 1993)
In addition, Tom programs - in almost any computer language or, if necessary, in firmware - the instrument and interpretation programs. 

One of his recent hobbies is the interpretative FORC program which elegantly processes and plots First Order Reversal Curves measurements.


publications Publications of Tom Mullender
  • De Groot, L.V., Dekkers, M.J., Mullender, T.A.T. (2012). Exploring the potential of acquisition curves of the anhysteretic remanent magnetization as a tool to detect subtle magnetic alteration induced by heating, Phys. Earth Planet. Inter., 194-195, 71-84. 

  • Gong, Z., Dekkers, M.J., Dinarès-Turell, J. and Mullender, T.A.T. (2008). Remagnetization mechanism of Lower Cretaceous rocks from the Organyà Basin (Pyrenees, Spain), Studia Geoph. Geod., 52, 187-210. 
  • Gong, Z., Langereis, C.G. and Mullender, T.A.T. (2008). The rotation of Iberia during the Aptian and the opening of the Bay of Biscay, Earth Planet. Sci. Lett., 273, 80-93   
  • Vasiliev, I., Dekkers, M.J., Krijgsman, W., Franke, C., Langereis, C.G. and Mullender, T.A.T. (2007). Early diagenetic greigite as a recorder of the palaeomagnetic signal in Miocene–Pliocene sedimentary rocks of the Carpathian foredeep (Romania),  Geophys. J. Int., 171, 613-629 
  • Sagnotti, L., Rochette, P., Jackson, M., Vadeboin, F., Dinarès-Turell, J., Winkler, A., Maher, B., Moreno, E., Hanesch, M., Scholger, R., Jude, R., Shaw, J., McIntosh, G., Osete, M.L., Matzka, J., Petersen, N., Larrasoaña, J.C., O’Reagan, M., Roberts, A.P., Mullender, T.A.T., Peters, C., Mohamed, K.J., Rey, D., Hannam, J., Heller, F., Frederichs, T. and Bleil, U., Inter-laboratory calibration of low-field magnetic and anhysteretic susceptibility measurements, Phys. Earth Planet.  Inter., 138, 25–38.   [PDF]
  • De Boer, C.B., Mullender, T.A.T. and Dekkers, M.J. (2001). Low-temperature behaviour of haematite: susceptibility and magnetization increase on cycling through the Morin transition, Geophys. J. Int., 146, 201-216. 
  • Tauxe, L., Mullender, T.A.T. and Pick, T. (1996). Pot-bellies, wasp-waists and superparamagnetism in magnetic hysteresis. J. Geophys. Res., 101, 571-584. 
  • Mullender, T.A.T., van Velzen, A.J. and Dekkers, M.J. (1993). Continuous drift correction and separate identification of ferromagnetic and paramagnetic contributions in thermomagnetic runs. Geophys. J. Int., 114, 663-672.
  • Langereis, C.G., Linssen, J.H., Mullender, T.A.T., Zijderveld, J.D.A. (1989). Demagnetization. In: David E. James (editor), The Encyclopedia of Solid Earth Geophysics. Van Nostrand Reinhold Company, New York, 201-211.