Integrated stratigraphic, sedimentological and petrographical evaluation for CERN’s Future Circular Collider subsurface infrastructure (Geneva Basin, Switzerland-France)
نویسندگان
چکیده
Abstract The European Organization for Nuclear Research (CERN) is currently undertaking a feasibility study to build the next-generation particle accelerator, named Future Circular Collider (FCC), hosted in 90–100 km subsurface infrastructure Geneva Basin, extending across western Switzerland and adjacent France. This article represents preliminary, basin-scale stratigraphic lithotype analysis using state-of-the-art Swiss French terminology, set context with FCC. Existing information, rock cores well reports, laboratory analyses geophysical well-logs from 661 wells representative construction area have been integrated pave way multidisciplinary approach several geoscientific engineering domains guide FCC’s upcoming technical design phase. Comparisons well-log data allowed identification of formations lithotypes, as formulate preliminary assessment potential geological hazards. Regional evaluation revealed intersection 13 comprising 25 different lithotypes Basin. A lack remains south-western region FCC shown by well-density coverage modelling. main hazards are represented karstic intervals Grand Essert Formation’s Neuchâtel Member, Vallorbe Vuache formations, associated fractured limestone Cenozoic pure clayey sandstone-bearing Transition zone Siderolithic Formation. Potential swelling hazard presence anhydrite, claystone Molasse Rouge Grès et Marnes Gris à gypse yielding up 17.2% smectite formation. Hydrocarbon indices both gaseous bituminous forms encountered majority investigated wells, bear environmental deposits limestones Mesozoic Jura formations.
منابع مشابه
Lake-Basin Type, Source Potential, and Hydrocarbon Character: an Integrated Sequence-Stratigraphic–Geochemical Framework
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ژورنال
عنوان ژورنال: Swiss Journal of Geosciences
سال: 2022
ISSN: ['1661-8726', '1661-8734']
DOI: https://doi.org/10.1186/s00015-022-00407-y