Boulila Slah

Equipe : Paléoenvironnemements Paléoclimats, Bassins

Maître de Conférences

UPMC - Campus Jussieu, Tour 56-66, 5e étage - Case courrier 117

Tél : 01 44 27 50 31- slah.boulila@upmc.fr

Thèmes de recherche

Cyclostratigraphy, climate and sea-level changes, long-term biogeochemical cycles, climatic-oceanic events.

I acquire and use high-resolution geophysical and geochemical data from the sedimentary records (from outcrops, drilling programs and subsurface data) to address three multidisciplinary, interrelated topics: (1) astronomical calibration of the Cenozoic and Mesozoic time scales, (2) the role of orbitally driven climate and sea-level changes in the hierarchy of sedimentary sequences, and (3) the potential of highly resolved sedimentary records to provide constraints on the astronomical modeling. In this latter topic, I am interested in two subjects: (a) constrain tidal-dissipation parameter (and dynamic ellipticity of the Earth) by calculation of the precession frequency (constant, p) from well-preserved sedimentary cycles, and (b) mapping the expression of Myr- to multi-Myr-long astronomical cyclicities in the Cenozoic and Mesozoic strata, for implication on the chaotic behavior of the inner solar system, as expressed in the long orbital periodicities (resonant angles).

Recherches actuelles

1. Astronomical calibration of the Eocene timescale from IODP-342 drill-cores in the North Atlantic Ocean. S. Boulila et al.
Collaborations: Jacques Laskar (IMCCE, Paris Observatory) and Heiko Pälike (MARUM, Bremen University).

2. Long-term sea-level cycles and Solar System motion in the Milky Way: A challenging match. S. Boulila et al.
Collaborations: Jacques Laskar (IMCCE, Observatoire de Paris), Bilal HAQ (U.S. National Science Foundation, Arlington, USA) and Bruno Galbrun (ISTEP, UPMC).

3. Astronomical calibration of the Eocene-Oligocene transition from a 7-Myr-long lacustrine record in the Rennes basin (NW France). S. Boulila et al.
Collaborations: Guillaume Dupont-Nivet (Géosciences de Rennes, UMR 6118) and Hugues Bauer (BRGM, Bureau de Recherches Géologiques et Minières, Orléans).

4. Carbon-cycle dynamics during the early Toarcian OAE: constraints from the High Atlas Basin (Morocco). S. Boulila et al.
Collaborations: Bruno Galbrun (ISTEP, UPMC) and Driss Sadki (Meknès University, Morroco).

5. Earth’s magnetic filed secular variations from ultra-high resolution paleoclimtic data from the North Atlantic (IODP Exp. 342). Y. Yamamo, S. Boulila, et al.
Collaborations: Yuhji Yamamoto (Kochi University, Japan).

6. Astronomical calibration of the Paleocene-Eocene Thermal Maximum (PETM) from IODP 342 Expedition, U1403-U1409 Sites (North Atlantic Ocean). S. Boulila et al.
Collaborations: Donald Penman (Yale University) and James Zachos (University of California, Santa Cruz).

Bibliographie récente

- Pellenard P., Fortwengler D., Marchand D., Thierry J., Bartolini A., Boulila S., Collin P.-Y., Enay R., Galbrun B., Gardin S., Huault S., Huret E., Martinez M., Château Smith C., 2014. Integrated stratigraphy of the Oxfordian global stratotype section and point (GSSP) candidate in the Subalpine Basin (SE France). Volumina Jurassica, XII (1), 1–44.
- Charbonnier, G., Boulila, S., Gardin, S., Duchamp-Alphonse, S., Adatte, T., Spangenberg, J.E., Föllmi, K.B., Colin, C., Galbrun, B., 2013. Astronomical calibration of the Valanginian “Weissert” episode: the Orpierre marl–limestone succession (Vocontian Basin, southeastern France). Cretaceous Research 45, 25–42.
- Boulila, S., Galbrun, B., Huret, E., Hinnov, L.A., Rouget, I., Gardin, S., Bartolini, A., 2014. Astronomical calibration of the Toarcian Stage: implications for sequence stratigraphy and duration of the early Toarcian OAE. Earth Planet. Sci. Lett. 386, 98–111.
- Boulila, S., Hinnov, L.A., 2015. Comment on “Chronology of the Early Toarcian environmental crisis in the Lorraine Sub-Basin (NE Paris Basin)” by W. Ruebsam, P. Münzberger, and L. Schwark [Earth and Planetary Science Letters 404 (2014) 273–282]. Earth Planet. Sci. Lett. 416, 143–146.
- Boulila, S., Charbonnier, G., Galbrun, B., Gardin, S., 2015. Climatic precession is the main driver of Early Cretaceous sedimentation in the Vocontian Basin (France): Evidence from the Valanginian Orpierre succession. Sedimentary Geology 324, 1–11.
- Penman, D.E., Kirtland Turner, S., Sexton, P.F., Norris, R.D., Dickson, A.J., Boulila, S., Ridgwell, A., Zeebe, R.E., Zachos, J.C., Cameron, A., Westerhold, T., Röhl, U., 2016. An abyssal carbonate compensation depth overshoot in the aftermath of the Palaeocene-Eocene Thermal Maximum. Nature Geoscience 9, 575–580. doi : 10.1038/ngeo2757.
- Boulila, S., Hinnov, L., 2017. A review of tempo and scale of the early Jurassic Toarcian OAE: implications for carbon cycle and sea level variations. Newsletters on Stratigraphy 50/4, 363–389.
- Boulila, S., Vahlenkamp, M., De Vleeschouwer, D., Laskar, J., Yamamoto, Y., Pälike, H., Kirtland Turner, S., Sexton, P.F., Cameron, A., 2018. Towards a robust and consistent middle Eocene astronomical timescale. Earth Planet. Sci. Lett. in press.

Enseignement

Licence L1 :

72 heures équivalent TD (h-TD) : UE 1T001 "Géosciences 1".
54 h-TD : UE 1T002 "Géosciences 2".

Licence L2-L3) :

18 h-TD : **UE 2T043 "Stratigraphie" pour L2.
18 h-TD : UE 2T403 "Base de Sédimentologie & Pétrologie sédimentaire" pour L2.
6 h-TD : UE 3T505 "Environnements sédimentaires" pour L3.

Master 1 : 4,5 h-TD : **UE 4UG20 "Paléoclimats".

Master 1 : 4,5 h-TD : UE 4UG02 "Stratigraphie intégrée".

Master 2 : 9 h-TD : **UE 55UG56 "Paléoenvironnements-Paléoclimats-Paléogéographie" pour M2.

Master 2 : 4,5 h-TD : UE "Enregistrement des Cycles Sédimentaires" pour M2.

** Responsable ou co-responsable du module.

Responsabilités

Encadrement de Master 1 & 2, de Thésards