NERC have funded a Large Grant application to support an ICDP project on the Lower Jurassic in Wales/UK: Integrated understanding of the early Jurassic Earth system and Timescale (JET). The overall PI is Stephen Hesselbo (University of Exeter) with UK Co-Is from the BGS (Jim Riding, Melanie Leng, and Dan Condon), Oxford and Leeds.
The science objectives are to:
Achieve a high-resolution continuous cyclostratigraphy for the Early Jurassic and associated astronomical time scale leading to insights into solar system resonance, length-of-day and tidal dissipation; the first biostratigraphically-calibrated magnetostratigraphy for the entire 25 Myr long Early Jurassic based on a single section, and; a full synthesis of radio-isotopic and chronostratigraphic scales.
Provide a multi-proxy isotopic and elemental chemostratigraphy to track supercontinent break-up influence on the global Earth system and, in particular, a record of the end-Triassic and Early Toarcian mass extinctions, and subsequent recoveries of the carbon cycle, biosphere and ocean, and effects from volatile releases from coeval LIPs.
Deliver insights into Early Jurassic sea-level change and the greenhouse-icehouse transitions; an understanding of interdependencies between primary productivity, nutrient flux, and ocean redox state; and an integrated record of changes in atmospheric and marine composition understood in the context of quantitative whole-Earth system models.
This project has also received US$1.5M from ICDP towards the drilling costs.