The VICCO talk is held by: Jack Longman (Assistant Professor, Northumbria University, Newcastle), and has this title/topic:
Carbonates in volcanic ash: From Earth's past to climate's future?
Abstract:
Authigenic carbonate minerals form in volcanic ash through water-rock interactions when reactive glass and primary minerals weather in CO₂-bearing fluids. Fresh volcanic ash releases calcium and magnesium into alkaline pore waters, which then precipitate as calcite, aragonite, or Mg-carbonates depending on environmental conditions. This natural carbonation process occurs over timescales from decades to millennia and may represent a significant CO₂ sink in the natural world.
Understanding these mechanisms has implications for both paleoclimate studies and engineered carbon capture strategies using volcanic materials. In this talk I will give examples of this process in the geological record, discuss some ongoing work into understanding the processes and consider the potential augmentation of this process for augmented carbon drawdown.
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About the VICCO+ seminar series
The seminars are open for everyone interested, and especially students are welcome. The talks in VICCO+ seminar series are offered by the The VICCO centre, Dept. of Geosciences, University of Oslo.
The VICCO+ talk seminar series are normally held in the Geology Building, at UiO's campus Blindern, see this map.
The Co-ordinator for the talks is
– Bjørgunn Heggem Dalslåen