Brendan Duffy
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structuregeo.bsky.social
Brendan Duffy
@structuregeo.bsky.social
380 followers 330 following 240 posts
Dad, husband, brother, geologist, PhD scientist, often wrong, sometimes realizes it. Honorary researcher at unimelb.
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structuregeo.bsky.social
Lecturer or senior lecturer positions (x2) in #EngineeringGeology. Come to Christchurch in New Zealand's South Island.
May 9, 2025 at 12:14 PM
structuregeo.bsky.social
I never get tired of looking at Poplars Graben releasing bend on the Hope Fault, New Zealand. Remarkable how much detail can be seen in google maps 3D view ⚒️
www.google.com/maps/@-42.59...
February 13, 2025 at 11:31 AM
structuregeo.bsky.social
Looking for publications on the glacial geology of Glencarn Lough, Sligo, and the amazing landslides along there, which look like camber blocks ⚒️ maps.app.goo.gl/Qfj6u1Z4sKBG...
January 24, 2025 at 10:37 PM
structuregeo.bsky.social
What is the appropriate response to a review request like this... Answers on a post card please
#earthquake
review request - Advances in earthquake prevention ...
December 5, 2024 at 11:18 AM
structuregeo.bsky.social
(2) All of the streams flow within 1-2m high, broad levees. Just north of the river are a series of dunes, dated by Jamie Shulmeister at University of Canterbury.
Jocelyn Campbell realised that the ages of the dunes related very neatly to the ages of rangefront #earthquakes
November 28, 2024 at 10:58 AM
structuregeo.bsky.social
(1) This image shows a detrended lidar DEM of an area between Rangiora and the coastline, South Island of Aotearoa. I think this is a very large (c.10km) avlusion deposit (crevasse splay?), formed when the Ashley River broke out of its banks in pre-European times. ⚒️
November 28, 2024 at 10:58 AM
structuregeo.bsky.social
Was feeling a bit rough yesterday and not up for much physically, so I had a crack at trying to make a geoscience crossword. First attempt, so hopefully will improve... ⚒️
geological crossword puzzle and clues
November 15, 2024 at 11:18 PM
structuregeo.bsky.social
I just spotted this position. It looks like an exciting opportunity for an #ECR who wants to bridge the gap between academia and #industry - that is what this position seems to be all about. ⚒️

www.livehire.com/careers/universityofnewcastle/job/H44PC/J13RDVR2UH/lecturer-geoscience
The School of Environmental & Life Sciences is seeking to appoint a research-intensive academic in the field of Geology & Geoscience to undertake a special project initiative. The successful candidate will establish and sustain a research program that is engaged with industry and is complementary to their existing research strengths. We are looking for someone with significant knowledge and experience in geology with application to earth and environmental resource understanding and management. This position is based in the discipline of Earth Science at the University of Newcastle’s Callaghan Campus and is jointly funded by controlled entity, TUNRA. It is a great opportunity to work with a young, vibrant, and growing Earth Science department with recently appointed academics with expertise in hydrogeology, ocean and coastal geoscience, and remote sensing.
June 14, 2024 at 9:23 PM
structuregeo.bsky.social
I really want to see it now
May 1, 2024 at 10:06 AM
structuregeo.bsky.social
A standard day in NSW. Despite all of this, I still love geological mapping, especially in autumn
Christmas Jewel Spider Golden Orb Weaver Baby Eastern Brown snuggled up in the cleavage (rock cleavage)
April 11, 2024 at 11:05 AM
structuregeo.bsky.social
My daughter's birthday cake when she turned 6, March 2011, in Christchurch. She planned all the details, including liquefaction. Quake cake for the win ⚒️
April 4, 2024 at 8:28 AM
structuregeo.bsky.social
Is Manhattan Gneiss? No, it's mostly pretty schist. But the squirrels seem to like it any way #Manhattan #Geology ⚒️
January 22, 2024 at 2:58 PM
structuregeo.bsky.social
Try this kind of enforcement 🤣
January 14, 2024 at 9:11 PM
structuregeo.bsky.social
Edinburgh castle is so beautiful but even that amazing edifice is obviously prone to geotech issues. I was unsurprised to see the extent of rockfall mesh but I bet it was a controversial solution ⚒️
View of the castle from the moat, showing the rock face with a vast expanse of rockfall netting on the right side
January 14, 2024 at 7:31 PM
structuregeo.bsky.social
Changi Airport has the loveliest floor tiles. These migmatites and foliate granitoids are at Emirates check-in ⚒️
December 29, 2023 at 11:22 PM
structuregeo.bsky.social
Over the course of a week I rescued a turtle , a frog and a stick insect. This earned me some serious accolades from my daughter!!
December 16, 2023 at 1:28 AM
structuregeo.bsky.social
Covid and climate. More in common than their first letter #ClimateEmergency
December 6, 2023 at 12:03 PM
structuregeo.bsky.social
I'm moving so I have to give up some of my rock collection (apparently). Fortunately I can think of a few people locally who'll appreciate my #AlpineFault #mylonite ⚒️
December 6, 2023 at 9:47 AM
structuregeo.bsky.social
When my daughter was younger, she wanted a pic of her toy budgie at the beach. We sat it on top of one of the Moeraki Boulders, but when we took a close up it looked like it was actually sitting on the beach. Hilarious perspective!
November 12, 2023 at 6:51 AM
structuregeo.bsky.social
Not somewhere you would want to be in a flash flood! These cliffs in the Barique Formation basalts of #TimorLeste are one of the most impressive landforms I saw there, and that is saying something. You can see it yourself at -9.2092, 125.2400 ⚒️
In the centre of the photo, two tiny geologists are visible standing in a white bouldery river bed (predominantly Permian to Jurassic Gondwanan limestone boulders). The river flows through a gorge flanked by contrasting, towering dark grey and locally red cliffs of Paleocene, Asian-affinity basalt. In this photo, a tiny speck of MSc student can be seen at the foot of the distant cliff of basalt that is catching the light. In the foreground, the flanking cliffs are shaded. The lit cliff highlights a bend to the left in the downstream gorge.
October 25, 2023 at 1:34 PM
structuregeo.bsky.social
Ok, think you're right. Looked that up and it seems that these round masses in a different sample from about a few hundred m away are botryoidal.
October 22, 2023 at 9:34 AM
structuregeo.bsky.social
I'm keen to understand these circular textures in this vuggy calcite vein ⚒️
October 22, 2023 at 1:24 AM
structuregeo.bsky.social
Where did the mylonite in previous post come from? Right about here (-8.53623, 125.90753) where it occurs on the north side of the south-dipping Laclo Fault. The hanging wall rocks are boudinaged limestones in a thick apparent dextral shear zone. I interpret this as a folded detachment fault ⚒️
View to NE along the Laclo Fault. Left (north) wall of the fault is mylonitized amphibolite. Right (south) wall is sheared limestones. The next photo is taken from the rocks in the background, standing on the amphibolite and looking at the sheared limestone. Photograph (top to southeast) showing apparent dextral sense in a boudinaged limestone in the hanging wall shear zone of the Laclo Fault. An oriented compass is located at the bottom of the photo and shears are picked out with sharpie pen
October 21, 2023 at 1:38 PM
structuregeo.bsky.social
just feeling nostalgic going through photos from #TimorLeste, like this one of a boudin on the margin of an amphibolite mylonite, footwall of the Laclo Fault, cross-cut by a felsic dike
boulder of mylonitic amphibolite with boudins. On the left of the boudin is a small glimpse of felsic dike view from the side of same rock seen in picture 1, showing dike cutting across mylonitic foliation
October 21, 2023 at 5:51 AM
structuregeo.bsky.social
The list of parties in the New Zealand election is a horrible reminder of the rise of the right wing fringe in New Zealand
October 14, 2023 at 3:53 AM