Leeds Geological Association


Lecture Abstract


A summary of the forthcoming lecture

 



Title: Shifting Sands and Devil's Toenails: Jurassic Stratigraphy at Redcar

Speaker: Dr Jed Atkinson, Earth and Environment, University of Leeds

Date: Thursday 6th May 2021

Time: 7:15

This talk will be delivered remotely via Microsoft Teams (details below)

Meeting Details

Hidden beneath the sands of Redcar are outcrops of the oldest Jurassic rocks on the Yorkshire-Cleveland Coast. The usually poor exposure quality of this succession has led to it being largely overlooked despite representing an interval of time significant to the recovery from the end-Triassic mass extinction event. In 2018 the Beast from the East parted the veil of sand providing a rare opportunity to study the section in detail.

These rocks belong to the Redcar Mudstone Formation, a mudstone and siltstone-dominated sequence with cycles of shell beds containing high numbers of the bivalve Grphyaea. Redcar Rocks provides a complimentary section to the famous Blue Lias of SW Britain and the Scunthorpe Mudstone Formation of the Midlands and allows themes of marine oxygenation and recovery from mass extinction to be explored in a new setting.

This talk will be delivered via Microsoft Teams. Joining instructions will be circulated to members nearer the date. Non-members are welcome to attend and should email the Secretary at [email protected] no later than 24 hours before the scheduled start time, to request joining instructions.


A thin section of one of the shell beds at Redcar

A thin section of one of the shell beds at Redcar showing a Gryphaea and a high degree of pyritisation
to the bottom of the image. The field of view is approximately 2cm across the bottom.




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