People at Fort Hoofddijk

Maria Tulbure
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M.A. Tulbure, MSc
Stratigraphy & Paleontology Group
Department of Earth Sciences
Utrecht University 
Budapestlaan 4, 3584 CD Utrecht 
The Netherlands 

Phone +31 30 253 1361


Research of Maria Tulbure

MEDGATE: Micropaleontological constraints on gateway exchange
Planktic foraminifera have been used as proxies for sea surface temperature and productivity [e.g. Hayes et al., 2005], as well as for the establishment of accurate chronologies through astronomical tuning of planktic bioevents [e.g. Hilgen et al., 1999]. High resolution studies of planktic foraminiferal assemblages have been performed at the westernmost end of the Moroccan Corridor [Hilgen et al., 2000; Krijgsman et al., 2004; van der Laan et al., 2005; 2006]. Studies at the eastern end of the corridor are scarce [van Assen et al., 2006].

This project will focus on the study of planktic foraminifera from exposed sections throughout the Riffian Corridor (Fig. 1). Its aim is to identify very short duration bioevents such as rapid influxes of species, changes in coiling direction and the occurrence of particular morphotypes.
This work extends on-going research in Utrecht that is significantly improving the current (sub)zonal biostratigraphic resolution available. The comparison of these records with those elaborated for the Betic Gateway and data already published for the Mediterranean will allow regional correlation of unprecedented resolution and accuracy.
Fig. 2 Cartoon cross-section of the Gibraltar Straits.  Planktic foraminifera incorporate and preserve surface  water Nd , e.g. Atlantic waters with -11.8 εNd. 
Nd isotopic analysis of benthic foraminifera provides a bottom

water signal, e.g.  Mediterranean waters with -9.4 εNd .
For this purpose, the biostratigraphic results of this study will also have to be integrated with cyclostratigraphic studies of the selected sections. The latter is important to establish an integrated magneto- bio- cyclo- stratigraphic framework for this time interval, and to understand the cyclicity and its impact on changes in net-evaporation that will affect Mediterranean water budget during the MSC. An additional topic might be species morphotype specific isotope studies to reconstruct habitat differentiation.

publicationsPublications of Maria Tulbure
  • Flecker, R., Krijgsman, W., Capella, W., de Castro Martíns, C., Dmitrieva, E., Mayser, J.P., Marzocchi, A., Modestu, S., Lozano, D.O., Simon, D., Tulbure, M., van den Berg, B., van der Schee, M., de Lange, G., Ellam, R., Govers, R., Gutjahr, M., Hilgen, F., Kouwenhoven, T., Lofi, J., Meijer, P., Sierro, F.J., Bachiri, N., Barhoun, N., Alami, A.C., Chacon, B., Flores, Jose A., Gregory, J., Howard, J., Lunt, D., Ochoa, M., Pancost, R., Vincent, S., Yousfi, M.Z. (2015). Evolution of the Late Miocene MediterraneanAtlantic gateways and their impact on regional and globalenvironmental change, Earth Science Reviews, 150, 365-392.  
  • Palcu, D.V., Tulbure, M., Bartol, M., Kouwenhoven, T.J., Krijgsman, W. (2105). The Badenian-Sarmatian Extinction Event in the Carpathian foredeep basin of Romania: paleogeographic changes in the Paratethys domain, Global and Planetary Change, 133, 346-358.