Do you want to shape Europese biggest #geoscience conference? Consider submitting a session into the skeleton program on meetingorganizer.copernicus.org/EGU27/provis...! The best way to ensure there is some science you like 😃 @egu.eu @ts.egu.eu @egu-ere.bsky.social

So I just got the prettiest rock ever! 😍😍😍 It really is pink 😁😁😁 rocks never cease to amaze me 🤓😎 #geologyforever

Our little healing jig for salt... Given the right motivation, salt can "glue" itself back together again 🤓😁😎

New feature in our team: working also with micro fluidic set-ups to check hydrate formation, checking Fluid-Rock interaction when CO2 gets cold 🥶🥶🥶🥶

Want to figure out how carbonate rocks break and flow when fluids are present? 9 more days left to apply for our PhD position. Check it out here careers.tudelft.nl/job/Delft-Ph...

First PhD paper by @entelakane.bsky.social ! Curious how grain size affects friction in carbonate voices? Check it out here: agupubs.onlinelibrary.wiley.com/doi/abs/10.1...

Grain Size and Fluid Effects on the Frictional Behavior of Simulated Carbonate Fault Gouge

Fluids promote healing and relaxation in terms of absolute values and rates Initial mean grain size controls the PSZ-to-bulk-gouge thickness ratio, which in turn modulates relaxation Healing is ...

agupubs.onlinelibrary.wiley.com

Another field teaching season done and dusted 😎😁 always a humbling experience, seeing the chaos that is a natural fault zone - and considering our cute 6 cm samples we usually use in the lab when #breakingrocks 😅

Step 2: glueing fiber-optics on another Red Felser sandstone

Postdoc Marco and BSc student Niels are playing around with local strain gauges in the run-up to try using fiber-optics for strain measurements. First step: UCS on Red Felser, one of our go-to sandstones

This week our postdocs Marco en Zibi are, together with the Geophysics team, testing fiber optics in a small port with a high difference between low and high tide. The local newspaper told the story! www.omroepzeeland.nl/nieuws/18468...

At this year's NAC conference, the national Dutch conference on geosciences, we manned a booth with outreach examples. And I wrote my favorite hashtag on the Scrabble board: #breakingrocks #rocks!

Final paper of Debanjans postdoc is out! Wanna know how a sandstone crackles? Check it out here link.springer.com/article/10.1...

Linking Ultrasonic Velocity and Microseismic Monitoring During Laboratory Triaxial Deformation of Reservoir Sandstones from a North Sea CO2 Storage Site - Rock Mechanics and Rock Engineering

Subsurface fluid injections cause rapid thermal and stress changes near wells, potentially compromising reservoir integrity. Effective monitoring and mitigation strategies are essential to ensure safe operations. This study investigates highly porous North Sea sandstones under low confining pressures (1 and 3 MPa), replicating near-wellbore stress conditions for a saline aquifer during CO2 injection. Using triaxial deformation experiments, we analyze the evolution of ultrasonic velocities, amplitudes, and acoustic emission (AE) signals to track deformation processes. Our results demonstrate that combined ultrasonic and AE monitoring effectively captures and forecasts the transition from elastic to inelastic deformation. An empirical relationship is proposed demonstrating a proof-of-concept correlation between microseismic event counts and ultrasonic velocity during irreversible deformation, which, upon calibration can be used for site-specific stress state monitoring. Higher confinement leads to increased AE activity due to intensified grain crushing and interparticle locking. At constant confinement, more porous samples also show greater AE activity, indicating enhanced damage accumulation. Spectral analysis reveals increased attenuation at higher confining pressures and a shift toward lower frequencies near failure, suggesting dominant shear deformation. Notably, deformation patterns vary with confinement: low confinement induces frictional slip and distinct failure planes, while high confinement promotes distributed damage and porosity reduction through grain crushing. This results in a non-linear failure envelope shaped by the dominant deformation mechanisms. These findings enhance our understanding of pore fluid-induced changes in reservoir rocks and offer new strategies for monitoring CO2 storage and other subsurface injection operations, especially in heterogeneous, porous formations under varying stress regimes.

link.springer.com

Pretty proud of this one: former postdoc Kai Li, with Marc and Anne, devised a method to qualify the change in leakage rate on the wellbore-steel interface due to thermal shock. Out now: kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...

Postdocs Marco and Milad demonstrate that #breakingrocks #rocks

Porosity-permeability practical for the first years of Earth, Climate and Technology @tudelftceg.bsky.social what's the effect of grain size?

I feel there is a crossover between toddlers playing with blocks and lab work 🤔🫠

I have a joke about rock mechanics but the punch line keeps breaking

Elizabeth V@geolizzy.bsky.social · 5mo ago

I have a core logging joke, but it’s a bit boring

Yesterday PhD candidate Parvin Kolah Kaj became Dr. Parvin! She built an extensive experimental database (multi-method analysis on 2000+ samples! 🤓🤯), and investigated wellog-to-lab correlations. Congratulations Dr. Parvin!

Cute little basalts 🥰🥰🥰

Rocks or cheese? 10 mm diameter basalt cores from Iceland, being made into 20 mm length test samples for a collaboration with Norway

Today a brand-new doctor graduated! In the middle we have Dr. Shihao Fu who wrote an amazing thesis on rock salt..he is flanked by his paranimfs (Dutch system... Long story) Jop and Entela. Congratulations Dr. Fu!

Wanna come work with us? We have a postdoctoral researcher position for 2 years to work on thermomechanics. See careers.tudelft.nl/job/Delft-Po...

Postdoc Experimental Thermo-Mechanics for Geothermal Energy

Postdoc Experimental Thermo-Mechanics for Geothermal Energy

careers.tudelft.nl

Today is the day to celebrate all the awesome #womeninscience that you know ❤️🤓😎 ladies, you rock!

An important read. You usually don't know what is going on in the lives of your colleagues, but in the recent geopolitical turmoil, nationality gives an idea about someone's state of mind

TU Delta@tudelta.bsky.social · 7mo ago

As the death toll from the bloody demonstrations continues to rise, Iranian engineering students are struggling to get in touch with their loved ones.

Anyone around #Delft interested in how materials repair themselves? We are hosting a symposium to explore a range of self healing materials, from rocks to metals, asphalt and polymer! @tudelftceg.bsky.social @tudelfttnw.bsky.social when? 27 Feb, at TU Delft, for free!

Thoroughly enjoying the Euroconference on Rock Physics and Rock Mechanics organized by the Strasbourg and EPFL team..and it turns into an awesome reunion with Debanjan Chandra and Kai Li! Awesome science so far and a great landscape for recuperating hikes in the lunch break

A rare view here in Delft! Lots of snow these days, whilst 2026 is slowly firing up. We wish you all a smashing year! May it rock 🪨😁

Christmas came early this year ! A new saw for the more fragile rocks 😍😁

More than seven thousand students, lecturers and researchers gathered in Amsterdam on Tuesday to demonstrate against the budget cuts on higher education. ‘Don't forget us,’ say representatives to the parties forming the new government. ‘Not everything is about immigration, defence or housing.’

Thousands of students and teachers rally for higher education - Delta

More than seven thousand students, lecturers and researchers gathered in Amsterdam on Tuesday to demonstrate against the budget cuts on higher education. The participants in the demonstration marched ...

delta.tudelft.nl

So what can you do when shooting with neutrons at rocks, look at this cool publication by the Norwegian team at NJORD! Mixing and precipitation can be shown in real time agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Coupling Neutron and X‐Ray Imaging of Fluid Mixing and Precipitation in Rocks: Challenges and Opportunities

We used coupled 4D neutron and X-ray imaging to study fluid mixing and calcite precipitation in basalt Neutron imaging can image the mixing of various aqueous solutions in porous basalt during fl...

agupubs.onlinelibrary.wiley.com