Sascha Zertani's Avatar

Sascha Zertani

@sheared-sash.bsky.social

Postdoc in structural geology/metamorphic petrology @ The Njord Centre, University of Oslo. Interested in deformation of the deep crust, brittle and/or ductile, and metamorphic reactions. Views and opinions my own. he/his

404 Followers  |  165 Following  |  31 Posts  |  Joined: 16.11.2023  |  2.3372

Latest posts by sheared-sash.bsky.social on Bluesky

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πŸ”Ž New insights on #fault growth in inverted rift basins!
πŸŽ“ The second chapter of my #PhD recently published in Journal of #StructuralGeology 😊
🌍 We studied #extensional & #inverted faults and their development through #multiphase #rifting and basin #inversion
πŸ”— doi.org/10.1016/j.js...

07.03.2025 09:33 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

⏳ Reminder! There’s still time to nominate a colleague for an EGU TS Division Medal πŸ…

πŸ—“ Deadline: 15 June 2025
πŸ”— Nominate here: www.egu.eu/awards-medals/nominations/

#Geoscience #Tectonics #StructuralGeology

05.06.2025 07:35 β€” πŸ‘ 3    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
Photograph of pristine pseudotachylyte (fossil earthquake) in a rock. A coin is shown for scale.

Photograph of pristine pseudotachylyte (fossil earthquake) in a rock. A coin is shown for scale.

Photograph of a shear zone in a rock. A coin is shown for scale.

Photograph of a shear zone in a rock. A coin is shown for scale.

Photograph brighter, more felsic former melts interacting with a dark, mafic rock. A coin is shown for scale.

Photograph brighter, more felsic former melts interacting with a dark, mafic rock. A coin is shown for scale.

Two reseachers taking notes while being filmed by two camera men in the scenic background of the Lofoten islands.

Two reseachers taking notes while being filmed by two camera men in the scenic background of the Lofoten islands.

Having a great time studying fossil lower-crustal earthquakes, mylonites, and lower-crustal processes in Lofoten. This time with some extra excitement. We are joined by a camera team that produces short videos about the CONTINENT project lead by Luca Menegon @ UiO. Very interesting experience! πŸ§ͺβš’οΈ

06.06.2025 19:06 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

βš’οΈπŸ§ͺ

24.04.2025 13:37 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Jobs on Friday!
Research Fellow in Structural Geology!
The study will provide a review of the timing and nature of Jurassic sequence development and structural evolution of the Mid Norway region.
Salary Β£38,249 per annum.
Info = a.hartley@abdn.ac.uk
www.abdn.ac.uk/jobs
Closing date = 22 April 2025

11.04.2025 06:43 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Queer Quarterly: What does queer visibility mean in academia? Queer Quarterly is the blog series of the EGU pride group, a LGBTQIA+ team of geoscientists engaged to uphold and improve the rights of the community in the EGU organization. This week’s post is dedic...

🌈 New on the #EGU TS blog!

Queer Quarterly, a blog series about being LGBT in academia:
We asked three openly queer researchers for their thoughts on being visibly or openly queer as researchers.

✨ Read their insights: blogs.egu.eu/divisions/ts...

16.04.2025 09:02 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Great overview of all things #ECS at #EGU25 πŸ‘‡

Stay tuned for more on the ECS TS events!

21.04.2025 10:37 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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#ecsmonday on BlueSky #2🀩

Check out the model and how Marina Galindos-Alfarache et al. (NOR) differentiate between pre- and syn-collisional structures during Caledonian orogeny⛰️:

doi.org/10.1016/j.te...

#paperalert #isotopes #geochemistry #tectonics

31.03.2025 07:20 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Jobs on Friday! πŸŽ‰πŸŽ‰
Research Associate in Tectonics and Tectonophysics, a permanent position at the University of Berlin
www.earthworks-jobs.com/jobs/fuberli...

28.03.2025 17:42 β€” πŸ‘ 1    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
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#ecsmonday on BlueSky #1

LetΒ΄s start with Claudia Elijas-Parra et al. (UK) and her #cracking insights of #porousrocks. Check out their improved statistical #method to distinguish between different phases of initiating a microcrack network:
www.sciencedirect.com/science/arti...

#myfault #shearband

24.03.2025 18:49 β€” πŸ‘ 1    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

@egu.eu Early Career Scientists (ECS) from Tectonics and Structural Geology are posting now on BlueSky:
#ecsMonday papers,
#tectonicModellingTuesday and
#jobsonFriday.

Follow us! Support us! 🀩

Do you now recent ECS papers or tectonic models?
Share it with us, to share it with all! πŸš€

24.03.2025 18:40 β€” πŸ‘ 3    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
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Jobs on Friday! (we're back)

The Department of Earth Sciences (Utrecht University) is seeking an Assistant or Associate Professor in Electron Microscopy of Earth Materials

Deadline 31 March 2025

www.uu.nl/en/organisat...

21.03.2025 08:11 β€” πŸ‘ 0    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

The #EGU25 programme is online! πŸ”Ž

Explore sessions, abstracts, and all TS-related content β€” and start planning your week.

See what’s coming up: egu.eu/1806BR

18.03.2025 08:47 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Nah it's all you dude!

12.03.2025 10:24 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Check out Stephen's latest accomplishment! Super proud of him! πŸ§ͺβš’οΈ Excellent job!

12.03.2025 08:42 β€” πŸ‘ 10    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0

Excellent work, Stephen!!! πŸ₯³

12.03.2025 08:39 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

@kristinadunkel.bsky.social

12.03.2025 08:38 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

The TS division has also arrived! Follow them at @ts.egu.eu !

03.03.2025 13:45 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Wohooo!

03.03.2025 09:01 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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I just pasted this photo into a powerpoint, and the #AI-generated AIt Text is "A person drawing a fish on a rock". πŸ˜‚ Pretty accurate description!
#geology

28.02.2025 08:52 β€” πŸ‘ 17    πŸ” 2    πŸ’¬ 2    πŸ“Œ 0
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🚨 Hot off the press πŸͺ¨ βš’οΈ Where do you come from, where do you go 🎢 fluids that is… after an earthquake in the dry lower crust? We look into this and more using SEM-CL, EBSD, EMPA, STEM, and FTIR!

Hit the link below πŸ‘‡

agupubs.onlinelibrary.wiley.com/doi/full/10....

04.02.2025 14:22 β€” πŸ‘ 13    πŸ” 3    πŸ’¬ 1    πŸ“Œ 1
Backscattered electron image of plagioclase with reaction products of clinozoisite, quartz, kyanite, and white mica.

Backscattered electron image of plagioclase with reaction products of clinozoisite, quartz, kyanite, and white mica.

Caution! Reacting when wet! πŸ§ͺβš’οΈ

Plagioclase breakdown in action with plagioclase reacting to clinozoisite + kyanite + quartz + white mica. The classic reaction at high pressure conditions. I just got some TEM results from these beautiful samples, so stay tuned! #thinsectionthursday

19.12.2024 13:48 β€” πŸ‘ 18    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0

🌍🌌 AGU is thrilled to join Bluesky!

We’re here to share exciting discoveries, spotlight incredible scientists, and connect with YOU in this vibrant community.

Follow along as we explore how Earth and space sciences make the world a better place. 🌟

04.12.2024 16:30 β€” πŸ‘ 333    πŸ” 75    πŸ’¬ 11    πŸ“Œ 20
Crossed polarized light micrograph of a pseudotachylyte

Crossed polarized light micrograph of a pseudotachylyte

Plane polarized light micrograph of a pseudotachylyte

Plane polarized light micrograph of a pseudotachylyte

πŸͺ¨βš’️ #thinsectionthursday of a recrystallized quenched frictional melt (pseudotachylyte) from Lofoten, Norway. Plagioclase survivor clast retains deformation twins, reaction between garnet-amphibole. Garnet cores are full of inclusions from rapid quenching growth, then slow growth to form facet GBπŸ§ͺ πŸ”¬

05.12.2024 06:54 β€” πŸ‘ 34    πŸ” 7    πŸ’¬ 0    πŸ“Œ 1
Orientation map (IPFZ) of diopside that formed from the breakdown of omphacite, a high pressure mineral.

Orientation map (IPFZ) of diopside that formed from the breakdown of omphacite, a high pressure mineral.

This is a map showing the orientation of diopside in a deformed symplectite. This used to be an omphacite, which tells us that the rock used to be at very high pressure (great depth). βš’οΈπŸ§ͺ

If you want to read more about how such symplectites nucleate and deform:

link.springer.com/article/10.1...

29.11.2024 09:34 β€” πŸ‘ 18    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0

Also a very nice example 🀩

26.11.2024 14:35 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Yes I understand that. The goal is not to provide an exact measurement, but a context. Is the field of view the size of a coin, a car, or a house. It's probably not as clear with this image. But photos of sand dunes for example can be very misleading without such context.

26.11.2024 14:34 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Thanks @rlacassin.bsky.social ! Exactly right!

26.11.2024 14:30 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Photgraph of a weak shear zone (deformed rock) in a strong gabbro (non-deformed rock). The shear zone is a approximately 10 cm thick. A coin (5 Norwegian krone) is in the image for scale. Image was taken in western Norway.

Photgraph of a weak shear zone (deformed rock) in a strong gabbro (non-deformed rock). The shear zone is a approximately 10 cm thick. A coin (5 Norwegian krone) is in the image for scale. Image was taken in western Norway.

So strong and yet so weak: Look at this beautiful 'weak' shear zone in a 'strong' gabbro from western Norway. Can't wait to get back to the field in the summer! πŸ§ͺβš’οΈ

26.11.2024 11:52 β€” πŸ‘ 42    πŸ” 7    πŸ’¬ 3    πŸ“Œ 0
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Fluid-mediated transition from dynamic rupturing to aseismic slip at the base of the seismogenic continental crust Chemo-mechanical fluid-rock interactions are critical in controlling the frictional-viscous transition in the continental crust and the competition be…

From dynamic ruptures to aseismic slip - our new EPSL paper explores how H2O+CO2 fluids affect microstructure, slip rates, and timing of deformation in crustal fault zones. Check it out! (OA)
www.sciencedirect.com/science/arti...
#Geology #FaultMechanics #Earthquakes #SlowSlip #CO2

25.11.2024 07:46 β€” πŸ‘ 9    πŸ” 3    πŸ’¬ 1    πŸ“Œ 0

@sheared-sash is following 20 prominent accounts