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Welcome to the National Cosmogenic Nuclides Laboratory - LN2C

The National Cosmogenic Nuclides Laboratory (LN2C in french) is a structure dedicated to the use of cosmogenic nuclides in Earth Sciences, notably via the preparation of samples and the measurements of cosmogenic isotopes. Its mission is to provide an effective access to this methodology to the French scientific community, for research projects in the following fields: natural hazards and risks, linked for example to earthquakes or landslides past climate change, for example with the dating of markers associated to glaciations landscape dynamics and the determination of current and past denudation rates dating of archaeological sites and objects. investigation of the magnetic field evolution over time The LN2C consists of a set of laboratories allowing the purification and preparation of different types of sample (rocks, soils, water, etc.) as well as the measurement of different isotopic ratios (10Be/9Be, 26Al/27Al, 36Cl/35Cl, ...) by the national 5MV AMS (Accelerator Mass Spectrometer) facility ASTER. The LN2C regroups faculty members, research scientists, engineers and technicians from Aix Marseille University, CNRS and IRD. The LN2C was founded by Didier Bourlès (AMU Professor), and is hosted by CEREGE on the Technopôle de l'Arbois domain in Aix-en-Provence since 2006.

The installation of the ASTER instrument was possible due to an initial investment by the Bouches du Rhône General Council, the European Regional Development Fund (FEDER), CNRS, IRD and the Provence-Alpes-Côte d'Azur Region council. The LN2C is a technological platform of Aix-Marseille University and is part of the REGEF network. Its operation is supported by a recurring endowment from CNRS and IRD. The LN2C benefited from the Investments for the Future Program via EQUIPEX ASTER-CEREGE, which notably enabled the installation of a high energy source for ASTER.

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Chiba composite section Active fault Quaternary Out-of-sequence thrust Terrestrial cosmogenic nuclides TCN Landscape evolution Organic matter Monsoon Cosmogenic 10Be Erosion rates Laschamp excursion Late Glacial Denudation Production rate Evolution Cosmogenic radionuclides Glaciation Datations cosmogéniques Cosmogenic burial dating Fluorescence Fault scarps Nucléides cosmogéniques 10Be Holocene Fluvial incision Radiocarbon Taiwan French Alps Cosmic ray exposure dating Beryllium-10 Dating Alluvial deposits Rio Negro river Glacier fluctuations Sub-Antarctic 21Ne Glacial geomorphology Luminescence dating Cosmogenic Surface exposure dating Pyrenees Cosmogenic nuclide dating Lava flows Himalaya Cosmogenic nuclides Lake sediment 10Be cosmogenic nuclide Mediterranea Sackung Cave deposits Denudation rates Burial dating Antarctic Cold Reversal Kerguelen Neogene Southern French Alps 26Al Scandinavian ice sheet Bhutan Paraglacial Panoply Weathering Mongolia Quadrilatero Ferrifero Little Ice Age Deglaciation Chlorine-36 Denudation rate Pleistocene Authigenic 10Be/9Be ratio Paleoclimate GSSP stratotype River incision Active tectonics Rockfalls Gabon Western Alps Climate Cosmonuclide Cosmogenic nuclide Palaeoclimates Paleoseismology Beryllium 10 Sequential ultra-filtration 36Cl CRE dating Calibration Southwestern Alps Accelerator mass spectrometry Rock glacier Tectonic Beryllium Uplift Cosmogenic dating Incision rates Helium-3 Coral reef terrace Slip rate 3He Geomorphology Paleomagnetism


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