Sci. Dril., 32, 1–25, 2023 https://doi.org/10.5194/sd-32-1-2023 © Author(s) 2023. This work is distributed under the Creative Commons Attribution 4.0 License. Science Reports Initial results of coring at Prees, Cheshire Basin, UK (ICDP JET project): towards an integrated stratigraphy, timescale, and Earth system understanding for the Early Jurassic Stephen P. Hesselbo 1 , Aisha Al-Suwaidi 2 , Sarah J. Baker 3 , Giorgia Ballabio 4 , Claire M. Belcher 3 , Andrew Bond 5 , Ian Boomer 6 , Remco Bos 7 , Christian J. Bjerrum 8 , Kara Bogus 1 , Richard Boyle 3 , James V. Browning 9 , Alan R. Butcher 10 , Daniel J. Condon 11 , Philip Copestake 12 , Stuart Daines 3 , Christopher Dalby 1 , Magret Damaschke 11 , Susana E. Damborenea 13 , Jean-Francois Deconinck 14 , Alexander J. Dickson 5 , Isabel M. Fendley 15 , Calum P. Fox 16 , Angela Fraguas 17 , Joost Frieling 15 , Thomas A. Gibson 1 , Tianchen He 18 , Kat Hickey 1 , Linda A. Hinnov 19 , Teuntje P. Hollaar 1,3 , Chunju Huang 20 , Alexander J. L. Hudson 1 , Hugh C. Jenkyns 15 , Erdem Idiz 15 , Mengjie Jiang 1 , Wout Krijgsman 7 , Christoph Korte 8 , Melanie J. Leng 11 , Timothy M. Lenton 3 , Katharina Leu 21 , Crispin T. S. Little 22 , Conall MacNiocaill 15 , Miguel O. Manceñido 13 , Tamsin A. Mather 15 , Emanuela Mattioli 23 , Kenneth G. Miller 9 , Robert J. Newton 23 , Kevin N. Page 1 , József Pálfy 24,25 , Gregory Pie ´ nkowski 26, , Richard J. Porter 1 , Simon W. Poulton 22 , Alberto C. Riccardi 13 , James B. Riding 11 , Ailsa Roper 22 , Micha Ruhl 27 , Ricardo L. Silva 28 , Marisa S. Storm 29 , Guillaume Suan 23 , Dominika Sz ˝ ucs 1 , Nicolas Thibault 8 , Alfred Uchman 30 , James N. Stanley 9 , Clemens V. Ullmann 1 , Bas van de Schootbrugge 7 , Madeleine L. Vickers 31 , Sonja Wadas 21 , Jessica H. Whiteside 32 , Paul B. Wignall 22 , Thomas Wonik 21 , Weimu Xu 4 , Christian Zeeden 21 , and Ke Zhao 20 1 Camborne School of Mines, Department of Earth and Environmental Sciences, University of Exeter, Penryn Campus, Penryn, Cornwall, TR10 9FE, UK 2 Department of Earth Sciences, Khalifa University of Science and Technology, P.O. Box 12333, Abu Dhabi, UAE 3 Department of Geography, Laver Building, University of Exeter, North Park Road, Exeter, EX4 4QE, UK 4 School of Earth Sciences and SFI Research Centre in Applied Geosciences (iCRAG), University College Dublin, Dublin 4, Ireland 5 Centre of Climate, Ocean and Atmosphere, Department of Earth Sciences, Royal Holloway University of London, Surrey, TW20 0EX, UK 6 Geosciences Research Group, School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK 7 Department of Earth Sciences, Utrecht University, Marine Palynology and Paleoceanography, Princetonlaan 8a, 3584, CB, Utrecht, the Netherlands 8 Department of Geosciences and Natural Resource Management, University of Copenhagen, Øster Voldgade 10, 1350 Copenhagen-K, Denmark 9 Department of Earth and Planetary Sciences, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, NJ 08854-8066, USA 10 Geological Survey of Finland, Espoo, 02151, Finland 11 British Geological Survey, Keyworth, Nottingham, NG12 5GG, UK 12 Merlin Energy Resources Ltd., Newberry House, Ledbury, Herefordshire, HR8 2EJ, UK 13 División Paleozoología Invertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Argentina, CONICET, Paseo del Bosque S/N 1900, La Plata, Argentina 14 Biogeosciences, UMR 6282, UBFC/CNRS, Université Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000 Dijon, France Published by Copernicus Publications on behalf of the IODP and the ICDP.