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Hugo van Schrojenstein Lantman @HugoLantman

Postdoc at @NjordUiO in Oslo, working on microstructures and residual stresses in lower-crustal fault zones. Also interested in metamorphism, fluids, subduction

Joined January 2012
  • Tweets 693
  • Following 366
  • Followers 648
218 Photos and videos
Hugo van Schrojenstein Lantman retweeted
Njord Univ. of Oslo@NjordUiO
14 Apr 2024
Off to Vienna for #egu24 ! Many ECS members of our Njord family are giving presentations on glacier dynamics, molecular dynamics modelling of fractures in basalts, fracture experiments, and microstructures on fault rocks from the lower-crust. Check them out and see you in Vienna!
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Hugo van Schrojenstein Lantman retweeted
Luca Menegon@MicroLuca
21 Aug 2023
📢📢🚨🚨Hello fellow researchers, we are recruiting again ⁦@NjordUiO⁩! 👇👇 Join us for a PhD in Rock Deformation Processes to better understand the origin of the enigmatic lower-crustal earthquakes, it will be fun! 🔬⛰️⛏️📒📷💻🎥 jobbnorge.no/en/available-jo…
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Hugo van Schrojenstein Lantman retweeted
Stephen Michalchuk@glgysteve
4 Aug 2023
🚨 New JGR paper for your summer weekend reading enjoyment where we investigated micro- and nano-porosity in lower-crustal faults to derive the mechanisms that generate and rework porosity during the earthquake cycle agupubs.onlinelibrary.wiley.…
Synchrotron microCT volume of a pseudotachylyte (PST) vein and its immediate damage zone. Red are segmented garnets; blue are pores. Porosity is concentrated in the PST vein, in particular around garnets (single grain & framboidal varieties). Porosity in the vein was formed during the recrystallization of the vein, when garnet grew at the expense of the PST matrix. The density contrasts between garnet and the matrix created a net negative volume change - i.e. porosity. In the damage zone, porosity formed during the initial rupture propagation is locally preserved due to local inefficient healing of the fractures.

ALT Synchrotron microCT volume of a pseudotachylyte (PST) vein and its immediate damage zone. Red are segmented garnets; blue are pores. Porosity is concentrated in the PST vein, in particular around garnets (single grain & framboidal varieties). Porosity in the vein was formed during the recrystallization of the vein, when garnet grew at the expense of the PST matrix. The density contrasts between garnet and the matrix created a net negative volume change - i.e. porosity. In the damage zone, porosity formed during the initial rupture propagation is locally preserved due to local inefficient healing of the fractures.

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Hugo van Schrojenstein Lantman retweeted
Lorraine Tual@_garnetite_
25 Jul 2023
If you want to hear more about a female bad-ass geologist 🔨🪨from the 1910’s, hard rock and Neolithic axes 🪓 stories around today’s 🚴‍♀️ TDFF stage ⬇️ Really glad to be part of this awesome @geotdf project! @UMR_Geo_Ocean @IUEM_Brest
Geology of the Tour de France@geotdf
25 Jul 2023
Hard rocks were instrumental in the development of humans. They used them for all sorts of stone tools like hand 🪓 and 🔪 On the course we find eclogite, a beautiful green and red rock, long thought to be magmatic. Female science pioneer Yvonne Brière found out they were metamorphosed rocks, which originally formed from the magmatic, basaltic, oceanic crust. Her peers didn’t believe her then and mocked her, but we now know better! @_garnetite_ of @GeosciencesR tells you more! geo-sports.org/2023/stage-3-… #TDFF2023 #geotdf #geosports
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Hugo van Schrojenstein Lantman retweeted
Sascha Zertani@sheared_sash
11 Jun 2023
Last day of fieldwork in Kråkeneset today full of shear zones, sheared dikes, and great weather! Fantastic!
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Things got a bit igneous today! The largest K-feldspar I've seen in a long time, another feldspar with visible zoning, and mafic enclaves with skeletal scapolite (right @kristina_dunkel?)
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Cobble of the day: folds and garnets!
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Hugo van Schrojenstein Lantman retweeted
Sascha Zertani@sheared_sash
9 Jun 2023
Spent the last few days doing field work in Holsnøy looking at #eclogites and transferring to Kråkeneset today. On the way a quick stop at the famous Isdal shear zone!
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The Verpeneset eclogite locality never disappoints. This time I found a massive quartz-kyanite-phengite vein with a thick rim of omphacite.
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These garnet-orthopyroxene corona structures in the granulites of Holsnøy are already stunning by themselves, but they've also undergone spectacular deformation!
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Two localities, two different eclogites. Firstly the vibrantly coloured eclogites of Verpeneset, also containing quartz, phengite, sulfide and kyanite; secondly the orthopyroxene-bearing eclogite of Selje. #geology #garnet #omphacite #eclogite
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Bonus: alteration zone around carbonate-quartz-chlorite veins in the Selje eclogite.
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Second day of the tectonics field trip, and the scenery is incredible. Great rocks too, of course!
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Field trip time! Six days of Norwegian geology in the scope of tectonics with UiO @MicroLuca @sheared_sash @glgysteve
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The folds and related crenulation cleavage in this foliated serpentinite are highlighted beautifully in cross-polarized light. Has to be one of my favourite thin sections! #ThinSectionThursday #Geology
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Hugo van Schrojenstein Lantman retweeted
Dr. Alissa Kotowski@ajk_talcsrocks
17 Mar 2023
One week left to apply to this #PhD #position on ice sheets and glacial flow! This project will use observations from ice microstructures to calibrate a revised flow law, apply it to models, and improve uncertainties in sea level rise projections 🧊 INFO/link below 👍🏻
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Interesting thread: what does garbage from the late Stone Age look like, microscopically? What can you recognize? #ThinSectionThursday
@NL_Wetenschap@NL_Wetenschap
10 Mar 2023
Zoals beloofd: een afvalhoop onder de microscoop! Foto's zijn in PPL of XPL (wat aangeeft hoe het licht dat door de microscoop heen komt gepolariseerd is, parallel of gekruist)
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Hugo van Schrojenstein Lantman retweeted
Luca Menegon@MicroLuca
18 Jan 2023
Job alert 🚨 Join us at ⁦@NjordUiO⁩ for a #PhD on Rock Deformation Processes to better understand the origin of deep crustal #earthquakes in a project funded by ⁦@forskningsradet⁩ Please RT and DM me if you have questions 🙂 jobbnorge.no/en/available-jo…

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Hugo van Schrojenstein Lantman retweeted
Luca Dal Zilio@lucadalzilio
15 Feb 2023
Altought faults are conventionally modelled as discontinuity of zero thickness, this example from Kahramanmaraş shows that #earthquakes do not occur on infinitely thin faults, but consist of complex evolving networks with one (or more) fault core. Video credit: Muhammed Kösen
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Looking for a PhD position? Come do (literally) ground-breaking research with us at the Njord Centre in Oslo!
Luca Menegon@MicroLuca
18 Jan 2023
Job alert 🚨 Join us at ⁦@NjordUiO⁩ for a #PhD on Rock Deformation Processes to better understand the origin of deep crustal #earthquakes in a project funded by ⁦@forskningsradet⁩ Please RT and DM me if you have questions 🙂 jobbnorge.no/en/available-jo…
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