Hugo van Schrojenstein Lantman (@HugoLantman) header
Hugo van Schrojenstein Lantman (@HugoLantman) profile picture

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

 Norway
Joined January 2012
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Photo by Hugo van Schrojenstein Lantman (@HugoLantman)Photo by Hugo van Schrojenstein Lantman (@HugoLantman)Photo by Hugo van Schrojenstein Lantman (@HugoLantman)Photo by Hugo van Schrojenstein Lantman (@HugoLantman)Photo by Hugo van Schrojenstein Lantman (@HugoLantman)Photo by Hugo van Schrojenstein Lantman (@HugoLantman)Photo by Hugo van Schrojenstein Lantman (@HugoLantman)Photo by Hugo van Schrojenstein Lantman (@HugoLantman)Photo by Hugo van Schrojenstein Lantman (@HugoLantman)Photo by Hugo van Schrojenstein Lantman (@HugoLantman)
Hugo van Schrojenstein Lantman retweeted
Njord Univ. of Oslo (@NjordUiO) profile picture
Njord Univ. of Oslo@NjordUiO14 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!
Image from Njord Univ. of Oslo (@NjordUiO)
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Hugo van Schrojenstein Lantman retweeted
Luca Menegon (@MicroLuca) profile picture
Luca Menegon@MicroLuca21 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) profile picture
Stephen Michalchuk@glgysteve4 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.… – at Oslo, Norway
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_) profile picture
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) profile pictureGeology of the Tour de France@geotdf25 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
Image from Geology of the Tour de France (@geotdf)
Image from Geology of the Tour de France (@geotdf)
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Hugo van Schrojenstein Lantman retweeted
Sascha Zertani (@sheared_sash) profile picture
Sascha Zertani@sheared_sash11 Jun 2023
Last day of fieldwork in Kråkeneset today full of shear zones, sheared dikes, and great weather! Fantastic!
Image from Sascha Zertani (@sheared_sash)
Image from Sascha Zertani (@sheared_sash)
Image from Sascha Zertani (@sheared_sash)
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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?)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
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Cobble of the day: folds and garnets!
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
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Hugo van Schrojenstein Lantman retweeted
Sascha Zertani (@sheared_sash) profile picture
Sascha Zertani@sheared_sash9 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!
Image from Sascha Zertani (@sheared_sash)
Image from Sascha Zertani (@sheared_sash)
Image from Sascha Zertani (@sheared_sash)
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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.
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
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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!
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
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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
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
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Bonus: alteration zone around carbonate-quartz-chlorite veins in the Selje eclogite.
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
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Second day of the tectonics field trip, and the scenery is incredible. Great rocks too, of course!
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
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Field trip time! Six days of Norwegian geology in the scope of tectonics with UiO @MicroLuca @sheared_sash @glgysteve
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
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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
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
Image from Hugo van Schrojenstein Lantman (@HugoLantman)
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Hugo van Schrojenstein Lantman retweeted
Dr. Alissa Kotowski (@ajk_talcsrocks) profile picture
Dr. Alissa Kotowski@ajk_talcsrocks17 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 👍🏻 – at Utrecht, Nederland
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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) profile picture@NL_Wetenschap@NL_Wetenschap10 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)
Image from @NL_Wetenschap (@NL_Wetenschap)
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Hugo van Schrojenstein Lantman retweeted
Luca Menegon (@MicroLuca) profile picture
Luca Menegon@MicroLuca18 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) profile picture
Luca Dal Zilio@lucadalzilio15 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) profile pictureLuca Menegon@MicroLuca18 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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