A new subsurface record of the Pliensbachian–Toarcian, Lower Jurassic, of Yorkshire

Here, we describe the upper Pliensbachian to middle Toarcian stratigraphy of Dove's Nest borehole, which was drilled near Whitby, North Yorkshire, in 2013. The core represents a single, continuous vertical section through unweathered, immature Lower Jurassic sedimentary rocks. thickness Lias Group formations is approximately same as that exposed along Yorkshire coast between Hawsker Bottoms and Whitby. studied succession consists epeiric-neritic sediments comprises cross-laminated very fine sandstones, (oolitic) ironstones, argillaceous mudstones. Dark mudstone dominant lithology. These were deposited Cleveland Basin, more subsident area an epeiric sea, Laurasian Sea. We present set geochemical data includes organic carbon isotope ratios ( δ 13 C org ) total (TOC). record contains negative excursion across Pliensbachian–Toarcian boundary another lower corresponds Oceanic Anoxic Event (T-OAE). Below T-OAE excursion, values are less C-depleted than above it. find no evidence long-term positive excursion. TOC below Sedimentary suggests that, during much interval, seafloor Basin storm wave-base storm-driven bottom currents responsible for sediment erosion, transport, redeposition interval oceanic anoxia. abrupt shifts observed (lower Toarcian) likely reflect impact erosion by storms on morphology T-OAE. Supplementary material: stratigraphic [organic (TOC)] available at https://doi.org/10.6084/m9.figshare.c.6154436