%0 Conference Proceedings %T CYCLOSTRATIGRAPHY IN THE HAUTERIVIAN-BARREMIANFRIELINGEN CORE (LOWER SAXONY BASIN, GERMANY) %+ Université de Liège %+ Federal Institute for Geosciences and Natural Resources (BGR) %+ Géosciences Rennes (GR) %A Wouters, Sébastien %A Bornemann, André %A Erbacher, Jochen %A Martinez, Mathieu %A Al., Et %< avec comité de lecture %B International Meeting of Sedimentology 2017 %C Toulouse, France %3 Abstract book %P 981 %8 2017-10-10 %D 2017 %Z Sciences of the Universe [physics]/Earth Sciences/Stratigraphy %Z Sciences of the Universe [physics]/Earth Sciences/GeochemistryConference papers %X Astrochronology has proven to be a powerful method to constrain the duration of geological periods.However, in some geological periods, cyclostratigraphic studies give diverging results. For instance, theduration of the Hauterivian Stage was estimated as 3.5 myr in central Italy, and 5.9± 0.4 myr in South-EasternFrance and South-Eastern Spain. In the Lower Saxony Basin, pale marl-dark shales cycles in Hauterivian andBarremian sediments are accompanied by changes in clay mineralogy, floral and faunal communities andgeochemistry (variations in Ba, Si, Ca, Rb, Fe and Zr), which point to orbitally-forced climatic cycles. Highresolution(1 cm) scanning XRF results have been recently acquired on the Frielingen core which is situatednext to Hannover (Germany) and encompasses the Hauterivian. On these geochemical data, time-seriesanalyses will be performed to identify the orbital imprint on the alternations. This signal will then be used togive new insights on the duration of the Hauterivian. %G English %L insu-01718239 %U https://insu.hal.science/insu-01718239 %~ INSU %~ UNIV-RENNES1 %~ UR2-HB %~ CNRS %~ GR %~ OSUR %~ GIP-BE %~ UR1-HAL %~ UR1-SDLM %~ GR-PPDB %~ UNIV-RENNES2 %~ TEST-UR-CSS %~ UNIV-RENNES %~ INRAE %~ UR1-ENV %~ GR-P %~ TEST3-HALCNRS %~ TEST4-HALCNRS %~ TEST5-HALCNRS