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I am working as a PhD student (1 March 2014 - 1 March 2018) at the Geology and Geochemistry section (Department of Earth Sciences, VU Amsterdam). 

 

Aim of my PhD:

Time-stratigraphic correlations in (lignite-rank) coal repetitions in fluvial and coastal sedimentary successions of the lower Paleocene Fort Union Formation, Williston Basin (USA), to test if orbitally-forced climate changes may control phases of peat formation in fluvial systems.

Aspects:

1 - Examine the lateral extent of coal seams, the vertical scale(s) of coal repetitions and the timescale(s) involved. 
2 - Explore if this examination can be used to seperate autogenic controls (processes that arise spontaneously, inside sedimentary systems such as river-meandering and channel-avulsion) from allogenic controls (processes that act outside sedimentary systems but can invoke sedimentary change, such as orbitally forced climate change and tectonic uplift and subidence events). 
3 - Determine how orbital-scale climate changes may possibly affect peat formation in fluvial systems considering the upstream (sediment supply) and downstream (base-level) controls. 

Main methods:

1) Logging, sampling and field correlations of multiple stratigraphic sections
2) Correlations of ash layers through mineralogy, geochemistry and physical (macro-scale) characteristics
3) Magnetostratigraphy (using past reversals of Earth's magnetic field for stratigraphic correlations and age control) 

Part of NWO funded VIDI-project: Tephrostratigraphy and geochronology of the Paleocene Fort Union Formation: implications for coal deposition and the Geological Time Scale.

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Research Output 2015 2017

Conceptual models for short-eccentricity-scale climate control on peat formation in a lower Palaeocene fluvial system, north-eastern Montana (USA)

Noorbergen, L. J., Abels, H. A., Hilgen, F. J., Robson, B. E., de Jong, E., Dekkers, M. J., Krijgsman, W., Smit, J., Collinson, M. E. & Kuiper, K. F. 2017 (Accepted/In press) In : Sedimentology.

Research output: Scientific - peer-reviewArticle

Cyclische rivierkolen in Montana, USA

Noorbergen, L. J. 2015 In : Geo.brief.

Research output: PopularArticle

Stable isotope stratigraphy of the early Quaternary of borehole Noordwijk, southern North Sea

Noorbergen, L. J., Lourens, L. J., Munsterman, D. K. & Verreussel, R. M. C. H. 2015 In : Quaternary International. p. 148-157

Research output: Scientific - peer-reviewArticle