Fred Gaidies
@fredgaidies.bsky.social
Professor of mineralogy and metamorphic petrology | Department of Earth Sciences | Carleton University (Ottawa, Canada) | 🇩🇪🇨🇦🏳️🌈 | he/him/his
https://www.teamgar.net/fred-gaidies
https://www.teamgar.net/fred-gaidies
Reposted by Fred Gaidies
One more week to apply for a 2-yr postdoc job to work with @sumikotsuka.bsky.social (LIAG Hannover) and me @uni-jena.de to understand exhumation rates in the splendid #mountains of #Albania using #thermoluminescence #thermochronology on #carbonate #minerals in a new collaborative research program.
@sumikotsuka.bsky.social and I are looking for a postdoc (2 yrs) to work w/ us at @uni-jena.de and LIAG Hannover on constraining exhumation rates in #Albania using calcite/dolomite thermoluminescence thermochronology. www.structures.uni-jena.de/en/1012/open.... @paleoseismicity.bsky.social @dfg.de
Open Postdoc position
two-years full-time postdoc position open in our team, starting 1 January, 2026.
www.structures.uni-jena.de
October 24, 2025 at 8:30 PM
One more week to apply for a 2-yr postdoc job to work with @sumikotsuka.bsky.social (LIAG Hannover) and me @uni-jena.de to understand exhumation rates in the splendid #mountains of #Albania using #thermoluminescence #thermochronology on #carbonate #minerals in a new collaborative research program.
Reposted by Fred Gaidies
Reposted by Fred Gaidies
I’m happy and proud to announce the publication of @mtyogi.bsky.social new paper in JMG! It discusses the transport properties of the intergranular medium, as well as the mechanisms and kinetics of metamorphic crystallization, in rocks from Arctic Norway.
onlinelibrary.wiley.com/doi/full/10....
onlinelibrary.wiley.com/doi/full/10....
The Distribution of Major and Trace Elements Across a Garnet Population From the Kalak Nappe Complex (Finnmark, Scandinavian Caledonides): Evidence for Size‐Dependent Growth and Compositional Equilibration in the Garnet Zone
A garnet population from the lower Kalak Nappe Complex in Finnmark (Arctic Norway) was characterized using high-resolution X-ray micro-computed tomography, electron probe micro-analysis and laser abl...
onlinelibrary.wiley.com
April 30, 2025 at 2:02 PM
I’m happy and proud to announce the publication of @mtyogi.bsky.social new paper in JMG! It discusses the transport properties of the intergranular medium, as well as the mechanisms and kinetics of metamorphic crystallization, in rocks from Arctic Norway.
onlinelibrary.wiley.com/doi/full/10....
onlinelibrary.wiley.com/doi/full/10....
Reposted by Fred Gaidies
Join us at the University of Göttingen as a Research Assistant in Metamorphic Petrology and explore the mobilization and fractionation of REE, Th, and U during crustal melting.
📌 Find the full job posting at domsorger.eu
#metamorphicpetrology #monazite #garnet #rareearthelements #unigöttingen
📌 Find the full job posting at domsorger.eu
#metamorphicpetrology #monazite #garnet #rareearthelements #unigöttingen
April 9, 2025 at 2:10 PM
Join us at the University of Göttingen as a Research Assistant in Metamorphic Petrology and explore the mobilization and fractionation of REE, Th, and U during crustal melting.
📌 Find the full job posting at domsorger.eu
#metamorphicpetrology #monazite #garnet #rareearthelements #unigöttingen
📌 Find the full job posting at domsorger.eu
#metamorphicpetrology #monazite #garnet #rareearthelements #unigöttingen
Interested in the chemical transport properties of metamorphic rocks, particularly of its intergranular medium? Then our new paper may be something for you:
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Probing chemical transport through a rock using a porphyroblast population: Insights from the distributions of major, minor, and trace elements in garnet from the Danba dome (SW China)
A population of garnet porphyroblasts, spaced apart between c. 6 mm and 40 mm, in a metapelite of the kyanite zone from the Danba dome was investigate…
www.sciencedirect.com
March 14, 2025 at 6:42 AM
Interested in the chemical transport properties of metamorphic rocks, particularly of its intergranular medium? Then our new paper may be something for you:
www.sciencedirect.com/science/arti...
www.sciencedirect.com/science/arti...
Reposted by Fred Gaidies
A serpentinite mesh texture for #ThinsectionThursday. Or is it a piece of modern art? 🖌️
Note how there are several generations of serpentine, among them a clear one that filled the first fractures, and a dark one (full of magnetite) that replaced the rest of the olivine.
Note how there are several generations of serpentine, among them a clear one that filled the first fractures, and a dark one (full of magnetite) that replaced the rest of the olivine.
March 13, 2025 at 10:32 AM
A serpentinite mesh texture for #ThinsectionThursday. Or is it a piece of modern art? 🖌️
Note how there are several generations of serpentine, among them a clear one that filled the first fractures, and a dark one (full of magnetite) that replaced the rest of the olivine.
Note how there are several generations of serpentine, among them a clear one that filled the first fractures, and a dark one (full of magnetite) that replaced the rest of the olivine.
Reposted by Fred Gaidies
There are many ways to study rocks up-close! 🔬💎 These thin section drawings and images are of feldspar-pyroxene xenoliths, brought up from beneath Fagradalsfjall, Iceland, by erupted basalts🌋 #ThinSectionTuesday #Petrology
February 25, 2025 at 9:57 AM
There are many ways to study rocks up-close! 🔬💎 These thin section drawings and images are of feldspar-pyroxene xenoliths, brought up from beneath Fagradalsfjall, Iceland, by erupted basalts🌋 #ThinSectionTuesday #Petrology
Reposted by Fred Gaidies
Announcing MinPlotX, an open-source software for mineral formula recalculation and compositional plotting with an easy-to-use stand-alone graphical user interface.
The open-access paper is here: lnkd.in/eB4im8dh
MinPlotX can be downloaded here: lnkd.in/eXMHtkkK
#geology #petrology #minerals
The open-access paper is here: lnkd.in/eB4im8dh
MinPlotX can be downloaded here: lnkd.in/eXMHtkkK
#geology #petrology #minerals
February 22, 2025 at 5:34 PM
Announcing MinPlotX, an open-source software for mineral formula recalculation and compositional plotting with an easy-to-use stand-alone graphical user interface.
The open-access paper is here: lnkd.in/eB4im8dh
MinPlotX can be downloaded here: lnkd.in/eXMHtkkK
#geology #petrology #minerals
The open-access paper is here: lnkd.in/eB4im8dh
MinPlotX can be downloaded here: lnkd.in/eXMHtkkK
#geology #petrology #minerals
Reposted by Fred Gaidies
Today I was teaching binary phase diagrams with a solvus to undergrads so here is a pretty perthite with a Carlsbad twin from the hypersolvus Tolla granite (Corsica) for #ThinSectionThursday ⚒️
February 13, 2025 at 10:19 PM
Today I was teaching binary phase diagrams with a solvus to undergrads so here is a pretty perthite with a Carlsbad twin from the hypersolvus Tolla granite (Corsica) for #ThinSectionThursday ⚒️
Reposted by Fred Gaidies
I also got some pretty exsolutions in a norite from the Bushveld complex #ThinSectionThursday ⚒️
February 13, 2025 at 10:21 PM
I also got some pretty exsolutions in a norite from the Bushveld complex #ThinSectionThursday ⚒️
Reposted by Fred Gaidies
Andesite from Bad Honnef, Germany. Some lovely wee zoned feldspars along with the augites and oxides. 1893 Krantz thin section from NMS collection. #ThinSectionThursday
February 20, 2025 at 4:10 PM
Andesite from Bad Honnef, Germany. Some lovely wee zoned feldspars along with the augites and oxides. 1893 Krantz thin section from NMS collection. #ThinSectionThursday
Reposted by Fred Gaidies
BSE images of a basalt clast from sample 2016Oden-D3, Alpha Ridge, Arctic Ocean, a volcanic breccia formed as the result of magma-water interaction 90 my ago. Think Kilauea lava bench deposit! Image B at yellow dot on A. #ThinSectionThursday #UNCLOS
February 13, 2025 at 3:35 PM
BSE images of a basalt clast from sample 2016Oden-D3, Alpha Ridge, Arctic Ocean, a volcanic breccia formed as the result of magma-water interaction 90 my ago. Think Kilauea lava bench deposit! Image B at yellow dot on A. #ThinSectionThursday #UNCLOS
Reposted by Fred Gaidies
11/ If you are interested, you can find the paper in early view, accepted on JMG!
onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com/doi/10.1111/...
Plate Interface Shear Zone in the Sanbagawa Metamorphic Belt, Constrained by RSCM Thermometry, U–Pb Zircon Dating and Phase Equilibria Modelling in the Sarutagawa Region, Central Shikoku, Japan
Exhumed high-P/low-T complexes are of paramount importance to directly access rocks that experienced subduction zone processes. However, the original tectono-metamorphic fabrics are often partially o...
onlinelibrary.wiley.com
February 13, 2025 at 1:42 PM
11/ If you are interested, you can find the paper in early view, accepted on JMG!
onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com/doi/10.1111/...
Reposted by Fred Gaidies
The Metamorphic Studies Group Research in Progress (RiP) meeting and related events will be held in Liverpool, UK, on April 8-11th, 2025. Registration deadline is February 20th, 2025.; see the MSG website for more.
metamorphicstudiesgroup.wordpress.com/msg-rip-2024/
Regards
John
metamorphicstudiesgroup.wordpress.com/msg-rip-2024/
Regards
John
MSG RiP 2025
The Metamorphic Studies Group Research in Progress (RiP) meeting will be held in Liverpool, UK, on April 9-10th, 2025. Registration for the RiP meeting, the MAGEMin workshop (April 8th, 2024), and …
metamorphicstudiesgroup.wordpress.com
February 5, 2025 at 8:58 AM
The Metamorphic Studies Group Research in Progress (RiP) meeting and related events will be held in Liverpool, UK, on April 8-11th, 2025. Registration deadline is February 20th, 2025.; see the MSG website for more.
metamorphicstudiesgroup.wordpress.com/msg-rip-2024/
Regards
John
metamorphicstudiesgroup.wordpress.com/msg-rip-2024/
Regards
John
Reposted by Fred Gaidies
🚨 Hot off the press 🪨 ⚒️ 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 👇
agupubs.onlinelibrary.wiley.com/doi/full/10....
Hit the link below 👇
agupubs.onlinelibrary.wiley.com/doi/full/10....
February 4, 2025 at 2:22 PM
🚨 Hot off the press 🪨 ⚒️ 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 👇
agupubs.onlinelibrary.wiley.com/doi/full/10....
Hit the link below 👇
agupubs.onlinelibrary.wiley.com/doi/full/10....
Reposted by Fred Gaidies
Faculty and staff at Sonoma State University were just notified of the closing of the Geology Department - they are organizing an email letter writing campaign for Monday 1/27 to rally support - see below🧪⚒️
It’s awful to see the closing of another Geology department and big loss for the community.
It’s awful to see the closing of another Geology department and big loss for the community.
January 25, 2025 at 6:52 PM
Faculty and staff at Sonoma State University were just notified of the closing of the Geology Department - they are organizing an email letter writing campaign for Monday 1/27 to rally support - see below🧪⚒️
It’s awful to see the closing of another Geology department and big loss for the community.
It’s awful to see the closing of another Geology department and big loss for the community.
Reposted by Fred Gaidies
Looking for a PhD opportunity? Interested in #experiments and #petrology? Keen to join our team at the University of Göttingen? Then apply for a 3-year position to study #microstructures and #geochemistry of #mineral reaction fronts!
Apply here:
obp.uni-goettingen.de/de-de/OBF/In...
Apply here:
obp.uni-goettingen.de/de-de/OBF/In...
December 22, 2024 at 6:13 PM
Looking for a PhD opportunity? Interested in #experiments and #petrology? Keen to join our team at the University of Göttingen? Then apply for a 3-year position to study #microstructures and #geochemistry of #mineral reaction fronts!
Apply here:
obp.uni-goettingen.de/de-de/OBF/In...
Apply here:
obp.uni-goettingen.de/de-de/OBF/In...
Reposted by Fred Gaidies
Our deep-time emissary, Marcia Bjornerud, takes us on a metamorphic journey.
⚒️🧪 geology GIS
Metamorphic rocks go on deep journeys we never can | Aeon Essays
Metamorphic rocks are our emissaries from the deep, travelling to alien realms and revealing the restless nature of Earth
aeon.co
December 18, 2024 at 12:55 PM
Our deep-time emissary, Marcia Bjornerud, takes us on a metamorphic journey.
⚒️🧪 geology GIS
Reposted by Fred Gaidies
Spiral garnets are beautiful... and they record deformation processes during growth. Thomas Farrell used Sm-Nd geochronology to show these garnets from Spain grew in just a few 100,000 yrs!
@agu.org #AGU24
👇Read the full paper here
pubs.geoscienceworld.org/gsa/geology/...
@agu.org #AGU24
👇Read the full paper here
pubs.geoscienceworld.org/gsa/geology/...
December 11, 2024 at 12:41 PM
Spiral garnets are beautiful... and they record deformation processes during growth. Thomas Farrell used Sm-Nd geochronology to show these garnets from Spain grew in just a few 100,000 yrs!
@agu.org #AGU24
👇Read the full paper here
pubs.geoscienceworld.org/gsa/geology/...
@agu.org #AGU24
👇Read the full paper here
pubs.geoscienceworld.org/gsa/geology/...
Interested in the transport properties and crystallization mechanisms of metamorphic rocks? @mtyogi.bsky.social will talk about it today at #AGU24 (Session V24B, room 207 A)!
December 10, 2024 at 3:20 PM
Interested in the transport properties and crystallization mechanisms of metamorphic rocks? @mtyogi.bsky.social will talk about it today at #AGU24 (Session V24B, room 207 A)!
Reposted by Fred Gaidies
Radioactive decay is difficult to envision unless you have a cloud chamber. Here I use a piece of naturally radioactive monazite crystal (~25 cm) to produce very energetic alpha particles - a decay product - that ionize alcohol-saturated vapor. I use this in Geochron and Natural Disasters classes.
December 8, 2024 at 1:46 PM
Radioactive decay is difficult to envision unless you have a cloud chamber. Here I use a piece of naturally radioactive monazite crystal (~25 cm) to produce very energetic alpha particles - a decay product - that ionize alcohol-saturated vapor. I use this in Geochron and Natural Disasters classes.
Reposted by Fred Gaidies
Folds in metasediments on Barred Island near Englee in Newfoundland presumably related to Taconian deformation of the Hare Bay Allochthon. #FridayFold
December 6, 2024 at 12:50 PM
Folds in metasediments on Barred Island near Englee in Newfoundland presumably related to Taconian deformation of the Hare Bay Allochthon. #FridayFold
Reposted by Fred Gaidies
Volcanology- and petrology-inspired baking for the annual Oxford Earth Sciences bake-off, courtesy of Bei Bei, Rhiannon, Sofia and colleagues! ⚒️🌋🔬
December 6, 2024 at 7:46 PM
Volcanology- and petrology-inspired baking for the annual Oxford Earth Sciences bake-off, courtesy of Bei Bei, Rhiannon, Sofia and colleagues! ⚒️🌋🔬
Are you at #AGU24 next week and interested in the kinetics of metamorphic crystallization?
Come by and say hello to @mtyogi.bsky.social. Thereza will discuss the chemical mobility of trace elements in metamorphic rocks, as well as crystal growth mechanisms.
agu.confex.com/agu/agu24/me...
Come by and say hello to @mtyogi.bsky.social. Thereza will discuss the chemical mobility of trace elements in metamorphic rocks, as well as crystal growth mechanisms.
agu.confex.com/agu/agu24/me...
<em>Crystallization Mechanisms and Extent of Chemical Equilibration During Garnet Growth in the Lower Kalak Nappe Complex (Finnmark, Scandinavian Caledonides) </em>
The microstructural and chemical characterization of crystal populations provid...
agu.confex.com
December 6, 2024 at 1:54 PM
Are you at #AGU24 next week and interested in the kinetics of metamorphic crystallization?
Come by and say hello to @mtyogi.bsky.social. Thereza will discuss the chemical mobility of trace elements in metamorphic rocks, as well as crystal growth mechanisms.
agu.confex.com/agu/agu24/me...
Come by and say hello to @mtyogi.bsky.social. Thereza will discuss the chemical mobility of trace elements in metamorphic rocks, as well as crystal growth mechanisms.
agu.confex.com/agu/agu24/me...