Georg Zellmer
@gzellmer.bsky.social
Chair in Petrology, University of Bonn, and Executive Editor, Journal of Petrology. Views are my own.
Prepare for a savannah climate in Europe: phys.org/news/2026-07...
Triassic inferno: Fires raged across Europe for millennia during past global warming
The end-Triassic mass extinction, 201 million years ago, is linked to volcanism that resulted from the break-up of Pangea and which pumped out vast amounts of CO2 into the atmosphere, causing extreme ...
phys.org
Check out our new article on Ruapehu volcano: rdcu.be/ftf2y Well done, Mustafa!
Seismic noise as a window into volcanic unrest: observations from Ruapehu, New Zealand, in 2022
rdcu.be
Now available free online - if you are interested in CSDs and the differences between 2D and 3D, this is a must read: doi.org/10.2138/am-2...
The influence of the aspect ratio in the determination of CSD slopes: comparing 2D versus 3D | American Mineralogist | GeoScienceWorld
doi.org
Congratulations to my student Silvia Moreno for acceptance by American Mineralogist of her paper on "The influence of the aspect ratio in the determination of CSD slopes: comparing 2D versus 3D". Well done, Silvia!
Congrats to Rae Sanches for her first paper of her PhD project: doi.org/10.1016/j.jv...
Redirecting
doi.org
Honoured to be this year's Coke Medallist of the Geological Society of London for my contributions to science and my service to the geosciences community. Thanking my nominator and supporters for their hard work to get me considered! www.geolsoc.org.uk/news/geologi...
Geological Society announces recipients of 2026 Medals, Awards and Funds | The Geological Society of London
geolsoc.org.uk
Congratulations to Carlos for an excellent new JPet Letter script on magma genesis in the TVZ, New Zealand, just published: academic.oup.com/petrology/ad...
Subducted sediments and deep crustal processes drive volcanism in the Taupo Volcanic Zone, New Zealand: an alternative interpretation
Abstract. The Taupo Volcanic Zone (TVZ) is a young volcanic arc producing large volumes of silicic magmas with crustal signatures that are traditionally at
academic.oup.com
Technical paper just out after many years of work: pubs.geoscienceworld.org/msa/ammin/ar...
Matrix effects on secondary ion emissions for H and OH from natural spinel-structured oxides: Implications for H2O quantification by secondary ion mass spectrometry | American Mineralogist | GeoScienc...
pubs.geoscienceworld.org
Given the roughly linear trend in global warming since 1970, what's the chance that we stay below 2 degrees warming at 2050? Pretty slim, it seems to me.
"Der Grund dafür ist die Verspätung eines vorausfahrenden Zuges" - one might ask why the prior train was delayed. So the better explanation would be that the reason is the utter incompetence of Deutsche Bahn.
It seems we may have reached a new normal here, though it is too early to tell. Almost 1 degree above the pre-2000 average.
First Global Comparison of Glacier Mass Change: They’re All Melting, and Fast eos.org/articles/fir...
First Global Comparison of Glacier Mass Change: They’re All Melting, and Fast - Eos
By systematically assessing data gathered by different methods, researchers refined estimates of global glacier melt and its contribution to sea level rise.
eos.org
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Would Adding the Anthropocene to the Geologic Time Scale Matter?
The Earth System clearly no longer operates in a ‘Holocene mode’ mainly due to fossil fuel-driven output during the mid-20th C Great Acceleration The altered state of the Earth System, without ne...
agupubs.onlinelibrary.wiley.com
"he presented findings suggest that this [AMOC] decline may be associated with an almost complete loss of stability of the AMOC over the course of the last century, and that the AMOC could be close to a critical transition to its weak circulation mode." www.nature.com/articles/s41...
Observation-based early-warning signals for a collapse of the Atlantic Meridional Overturning Circulation - Nature Climate Change
The Atlantic Meridional Overturning Circulation (AMOC) is currently strong, but transition to its weak mode could see significant changes in the climate system. This work presents an observation-based...
nature.com
Happy Lunar New Year to my friends and colleagues in East Asia! May the year be prosperous, bring happiness, and fulfill your wishes!
Still in New Zealand, but transitioning to Bonn in March. Move preparations in are going well, hope to get back to do Science again soon. See some of you at IAVCEI in Geneva and some of you at Goldschmidt in Prague, I hope.
