Leeds Geological Association


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Leeds Geological Association

 


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The Leeds Geological Association aims to promote and further interest in the geological sciences, both amongst its members and within the wider community. Particular emphasis is placed on the geology of the region and its relationship to landscape and scenery.

Membership is open to all.

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CORONAVIRUS (COVID-19) UPDATE


In light of the continuing efforts to limit the spread of coronavirus (COVID-19) no meetings involving face to face contact will be held until further notice. Where possible they will be conducted via the Internet.


NEXT MEETING

Thursday 6th May 2021

7:15PM

This meeting will be delivered remotely via Microsoft Teams


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


Dr Jed Atkinson
Earth and Environment
University of Leeds


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.


Photo: 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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LATEST ANNOUNCEMENTS

• Free On-line Courses •


Extinctions: Past and Present

Discover the diversity of life on earth, the impacts of five past mass extinctions and the prospect of a sixth extinction today.

https://www.futurelearn.com/courses/extinctions-past-present


The Earth in My Pocket: an Introduction to Geology

Get an introduction to geology. Discover where materials that make up everyday objects come from and how to use them sustainably.

https://www.futurelearn.com/courses/geology



 

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