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• Instructional Webinars coming soon! Vote for what you would like to see HERE!

Seds Online Webinars

At Seds Online, we host regular Webinars for the community. Recognising the incredibly broad spectrum of subject matter within our discipline, we aim to provide a structured, balanced, program that covers a range of topics.

  • To watch past Webinars, go to our Webinar Library!
  • To suggest a speaker for our Webinars, click HERE!

To access a Webinar, the link will be active 30 minutes before the start time.


Upcoming Webinars & Events

4 PM LONDON Wednesday 9th December 2020

Always a White Christmas in the Bahamas – Ocean Chemistry and Hydrodynamics Focus Winter Mud Production on Great Bahama Bank

Sam Purkis – University of Miami

Whitings, or occurrences of fine-grained carbonate within the water column, have been observed in modern environments with salinities ranging from fresh to marine conditions, and thick deposits of lime mud are described throughout the geological record. Despite their ubiquity, the trigger for whitings has been a conundrum under debate for more than eighty years. This talk will review the trigger for whitings atop the Great Bahama Bank and call upon hydrodynamic simulation and geochemical modelling to explore the diverse triggers of the lime mud factory. The results have implications for the interpretation of whitings mud in the geological record, including the geochemical signatures within it.

4 PM LONDON Wednesday 16th December 2020

An archive of glacial seawater and implications for carbonate platform sediments

Clara Blättler – University of Chicago

I will describe the unexpected discovery of pore fluids that, for the first time, appear to represent a direct archive of ancient seawater and to preserve the salinity and isotopic ratios of seawater from a past glacial period, likely the Last Glacial Maximum. These pore fluids were extracted from sediment cores from the Maldives Inner Sea, drilled in 2015 during IODP (International Ocean Discovery Program) Expedition 359 and penetrating late Oligocene to modern sediments. The composition of these fluids carries implications for glacial ocean circulation, water-rock interaction in platform systems, and preservation of carbonate sedimentary geochemistry.

19th-23rd December 2020

British Sedimentological Research Group

We are pleased to announce that Seds Online will be hosting BSRG this year! For those of you who do not know the conference, check it out here: We hope that global interest in the 59th BSRG will help to build valuable collaborations into 2021, and allow attendance for many who wouldn’t otherwise be able to come along!

4 PM LONDON Wednesday 20th January 2021

Mudstones as critical components of sub-surface energy systems: the role of multi-scale observations and novel analysis techniques in driving future research

Kevin Taylor – University of Manchester

Mudstones have for a long time been a focus in energy systems due to their critical role as source rocks for oil/gas, as caprocks/seals to oil and gas reservoirs, and more recently as important oil and gas reservoirs in themselves.    Gas will continue to be an important fuel for the energy transition but mudstones also have a critical role to play as we decarbonise the sub-surface energy system. They will continue to act as key seals, but now for geological CO2 storage as well as for hydrogen and thermal energy storage.  They may in themselves be potential CO2 storage sites and they are key radiogenic contributors to heat in sedimentary basins.  Finally, they form one of the potential targets for long-term geo-disposal of nuclear waste.  Our understanding of their multi-scale variability in properties such as porosity/permeability, susceptibility to gas migration, geomechanics and fracture propensity, as well as compositional and textural variability, will be key to maximising low-carbon energy systems.  To address these challenges we will continue to need seismic and field-scale observations, as well as high resolution 2D analysis (e.g. SEM. TEM), but will increasingly need 3D electron, X-ray, synchrotron and neutron observations, as well as 4D experiments under sub-surface realistic conditions. This presentation will highlight where some of these opportunities lie for the sedimentological/geochemical/mineralogical community.

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