Duane Froese
@tephrafan.bsky.social
naturalist | professor | ualberta | northern research | permafrost | Quat Geo | working with northern communities | PACS Lab | Rett Syndrome | he/him
Pinned
Duane Froese
@tephrafan.bsky.social
· Nov 21
I'm a Quaternary/permafrost geoscientist focused on ground ice, its vulnerability, and the exceptional things found in permafrost. I work with northern govts and communities to understand permafrost change with occasional digressions into the paleo world of permafrost.
Crazy ice wedge day. 10-12 m high syngenetic ice wedge spanning the Late Pleistocene—early Holocene boundary. #klondike #permasfrost
August 4, 2025 at 3:52 AM
Crazy ice wedge day. 10-12 m high syngenetic ice wedge spanning the Late Pleistocene—early Holocene boundary. #klondike #permasfrost
Great new paper on long recurrence interval earthquakes along the Tintina Fault in central Yukon, led by @theronfinley.bsky.social. A nice merging of the rich glacial record of the Yukon with modern seismicity data to understand potential risk in northern Canada. Great work Theron!
Really pleased to share our new paper in GRL, documenting evidence of multiple Quaternary surface-rupturing earthquakes on the Tintina fault in the Yukon.
doi.org/10.1029/2025...
@faultydata.bsky.social @earthquakeguy.bsky.social @thatfaultguy.bsky.social @tephrafan.bsky.social
doi.org/10.1029/2025...
@faultydata.bsky.social @earthquakeguy.bsky.social @thatfaultguy.bsky.social @tephrafan.bsky.social
Large Surface‐Rupturing Earthquakes and a >12 kyr, Open Interseismic Interval on the Tintina Fault, Yukon
We provide the first conclusive evidence of numerous large (>Mw 7.5) surface-rupturing earthquakes in the Quaternary on the Tintina fault
Offsets to Early and Middle Pleistocene glaciofluvial ter...
doi.org
July 19, 2025 at 12:25 AM
Great new paper on long recurrence interval earthquakes along the Tintina Fault in central Yukon, led by @theronfinley.bsky.social. A nice merging of the rich glacial record of the Yukon with modern seismicity data to understand potential risk in northern Canada. Great work Theron!
Reposted by Duane Froese
Really pleased to share our new paper in GRL, documenting evidence of multiple Quaternary surface-rupturing earthquakes on the Tintina fault in the Yukon.
doi.org/10.1029/2025...
@faultydata.bsky.social @earthquakeguy.bsky.social @thatfaultguy.bsky.social @tephrafan.bsky.social
doi.org/10.1029/2025...
@faultydata.bsky.social @earthquakeguy.bsky.social @thatfaultguy.bsky.social @tephrafan.bsky.social
Large Surface‐Rupturing Earthquakes and a >12 kyr, Open Interseismic Interval on the Tintina Fault, Yukon
We provide the first conclusive evidence of numerous large (>Mw 7.5) surface-rupturing earthquakes in the Quaternary on the Tintina fault
Offsets to Early and Middle Pleistocene glaciofluvial ter...
doi.org
July 16, 2025 at 9:55 PM
Really pleased to share our new paper in GRL, documenting evidence of multiple Quaternary surface-rupturing earthquakes on the Tintina fault in the Yukon.
doi.org/10.1029/2025...
@faultydata.bsky.social @earthquakeguy.bsky.social @thatfaultguy.bsky.social @tephrafan.bsky.social
doi.org/10.1029/2025...
@faultydata.bsky.social @earthquakeguy.bsky.social @thatfaultguy.bsky.social @tephrafan.bsky.social
New paper with a large cast, but including a lot of permafrost, preserved horse fossils from the Yukon— work we did collaboratively over many years. Nice to see this out. Paper led by indigenous authors, highlighting deep connections horses and communities.
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
May 24, 2025 at 8:53 PM
New paper with a large cast, but including a lot of permafrost, preserved horse fossils from the Yukon— work we did collaboratively over many years. Nice to see this out. Paper led by indigenous authors, highlighting deep connections horses and communities.
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
The Ukrainian Sherpa UTV all conditions buggy, including amphibious. A spring fieldwork dream…not ours just interloping on their ride with some frozen materials.
April 28, 2025 at 6:31 PM
The Ukrainian Sherpa UTV all conditions buggy, including amphibious. A spring fieldwork dream…not ours just interloping on their ride with some frozen materials.
Reposted by Duane Froese
Hi geoscientists! For those who avoid journals that are profit-focussed and abuse academic free labour (e.g., Elsevier, Nature), take a look at CJES. Non-profit and a storied history. I just joined as AE - journals like this are run with heart and integrity and need your support.
#academicsky
⚒️🧪
#academicsky
⚒️🧪
We're thrilled to share that CJES, a @cdnsciencepub.com journal, will be joining the BlueSky community soon! Stay tuned for updates as we prepare to connect, share, and engage with researchers and science enthusiasts in this exciting space. See you soon! 🌟 #ScienceCommunication #BlueSky
April 8, 2025 at 5:33 PM
Hi geoscientists! For those who avoid journals that are profit-focussed and abuse academic free labour (e.g., Elsevier, Nature), take a look at CJES. Non-profit and a storied history. I just joined as AE - journals like this are run with heart and integrity and need your support.
#academicsky
⚒️🧪
#academicsky
⚒️🧪
New paper from Ben Stoker’s PhD with Martin Margold on the ice flow history of the NW Laurentide Ice Sheet. Not for the faint— clicking in at 41p. A huge effort to compile and organize into a consistent ice sheet history with contributions from many.
tc.copernicus.org/articles/19/...
tc.copernicus.org/articles/19/...
Ice flow dynamics of the northwestern Laurentide Ice Sheet during the last deglaciation
Abstract. Reconstructions of palaeo-ice-stream activity provide insight into the processes governing ice stream evolution over millennial timescales. The northwestern sector of the Laurentide Ice Shee...
tc.copernicus.org
February 26, 2025 at 11:50 PM
New paper from Ben Stoker’s PhD with Martin Margold on the ice flow history of the NW Laurentide Ice Sheet. Not for the faint— clicking in at 41p. A huge effort to compile and organize into a consistent ice sheet history with contributions from many.
tc.copernicus.org/articles/19/...
tc.copernicus.org/articles/19/...
I try to stick to work here, but the ongoing impasse between Edmonton Pub. Schools and the Educational Assistants and Support Workers has gone on for more than a month, affecting our family. More than 1000 kids are being denied access to education. I wrote an Op-Ed @edmontonjournal.bsky.social
Opinion: Edmonton students with disabilities abandoned during strike
For more than a month, approximately 1,200 Edmonton students with disabilities have been denied their fundamental right to education.
edmontonjournal.com
February 20, 2025 at 8:23 PM
I try to stick to work here, but the ongoing impasse between Edmonton Pub. Schools and the Educational Assistants and Support Workers has gone on for more than a month, affecting our family. More than 1000 kids are being denied access to education. I wrote an Op-Ed @edmontonjournal.bsky.social
Today I finished my third (and final) year of #NSERC Geosciences Eval group. It’s a lot of work, but an enjoyable and rewarding form of service. A remarkable breadth of high quality thoughtful work, and a fair and consistent evaluation process in my experience.
February 7, 2025 at 10:05 PM
Today I finished my third (and final) year of #NSERC Geosciences Eval group. It’s a lot of work, but an enjoyable and rewarding form of service. A remarkable breadth of high quality thoughtful work, and a fair and consistent evaluation process in my experience.
Reposted by Duane Froese
In autumn, 1945, American photographer Gordon Parks flew up to Yellowknife on assignment with Standard Oil to do a photo feature but bad weather kept him from his intended destination. Instead he was invited to a nearby Dene community…
January 24, 2024 at 1:11 PM
In autumn, 1945, American photographer Gordon Parks flew up to Yellowknife on assignment with Standard Oil to do a photo feature but bad weather kept him from his intended destination. Instead he was invited to a nearby Dene community…
Behind a paywall but a nice profile of Beth Shapiro. We’ve been friends and worked together for 25 or so years. Always creative and now one of the biggest critics of de-extinction is redefining what it might mean for conservation genetics. Worth a read.
www.washingtonpost.com/climate-envi...
The dodo bird is extinct. This scientist says she can bring it back.
The company she works for is betting millions it can realize a once-far-fetched idea of “de-extinction.”
www.washingtonpost.com
January 27, 2025 at 12:55 AM
Behind a paywall but a nice profile of Beth Shapiro. We’ve been friends and worked together for 25 or so years. Always creative and now one of the biggest critics of de-extinction is redefining what it might mean for conservation genetics. Worth a read.
www.washingtonpost.com/climate-envi...
#Permafrost is the most exceptional material for the preservation of past life on the planet. A gram of permafrost can have more than 10^9 fragments of DNA, representing the plants, animals and microbial communities when the material was accumulating. #Klondike #Beringia
January 7, 2025 at 5:10 AM
#Permafrost is the most exceptional material for the preservation of past life on the planet. A gram of permafrost can have more than 10^9 fragments of DNA, representing the plants, animals and microbial communities when the material was accumulating. #Klondike #Beringia
#FossilFriday appreciation of our cover of the new #Beringia AAAR collection, a fossil rich locale on the Old Crow R. in Vuntut Gwitchin Territory. A river trip with 3 (then) graduate students. More than 1000 Pleist fossils: 70+ mammoth teeth, horses, hyena, camel, giant beaver, sloth and caribou.
December 19, 2024 at 3:56 PM
#FossilFriday appreciation of our cover of the new #Beringia AAAR collection, a fossil rich locale on the Old Crow R. in Vuntut Gwitchin Territory. A river trip with 3 (then) graduate students. More than 1000 Pleist fossils: 70+ mammoth teeth, horses, hyena, camel, giant beaver, sloth and caribou.
Reposted by Duane Froese
Arctic Indigenous mapmakers are reclaiming the past, shaping their future.
A new story by Jess Howard @permafrostpathways.bsky.social highlighting our collaborative mapping efforts with Esri and native Alaskan communities.
permafrost.woodwellclimate.org/arctic-indig...
A new story by Jess Howard @permafrostpathways.bsky.social highlighting our collaborative mapping efforts with Esri and native Alaskan communities.
permafrost.woodwellclimate.org/arctic-indig...
December 5, 2024 at 3:24 PM
Arctic Indigenous mapmakers are reclaiming the past, shaping their future.
A new story by Jess Howard @permafrostpathways.bsky.social highlighting our collaborative mapping efforts with Esri and native Alaskan communities.
permafrost.woodwellclimate.org/arctic-indig...
A new story by Jess Howard @permafrostpathways.bsky.social highlighting our collaborative mapping efforts with Esri and native Alaskan communities.
permafrost.woodwellclimate.org/arctic-indig...
Congratulations Dr. Cocker on a successful PhD defence of ‘Arctic ground squirrel middens as palaeoecological archives of east Beringia’. Many thanks to Allan Ashworth for making the trip, and Beth Shapiro, Britta Jensen and JP Zonneveld for examining the dissertation. Great things ahead.
December 4, 2024 at 5:00 AM
Congratulations Dr. Cocker on a successful PhD defence of ‘Arctic ground squirrel middens as palaeoecological archives of east Beringia’. Many thanks to Allan Ashworth for making the trip, and Beth Shapiro, Britta Jensen and JP Zonneveld for examining the dissertation. Great things ahead.
Reposted by Duane Froese
Check out the #permafrost pack and let me know if you should be on it! Please share far and wide and yell into the BlueSky from the frozen mountaintops to the Arctic tundra! go.bsky.app/UhFqWzJ
November 28, 2024 at 10:27 PM
Check out the #permafrost pack and let me know if you should be on it! Please share far and wide and yell into the BlueSky from the frozen mountaintops to the Arctic tundra! go.bsky.app/UhFqWzJ
It came from the #permafrost… #FossilFriday— a juvenile horse lower leg with soft tissue from the Klondike. Distal long bones are the most common Pleistocene mummified remains recovered, having been partially scavenged. #Yukon #Beringia, Tr'ondëk Hwëch'in Territory.
November 22, 2024 at 7:07 PM
It came from the #permafrost… #FossilFriday— a juvenile horse lower leg with soft tissue from the Klondike. Distal long bones are the most common Pleistocene mummified remains recovered, having been partially scavenged. #Yukon #Beringia, Tr'ondëk Hwëch'in Territory.
I'm a Quaternary/permafrost geoscientist focused on ground ice, its vulnerability, and the exceptional things found in permafrost. I work with northern govts and communities to understand permafrost change with occasional digressions into the paleo world of permafrost.
November 21, 2024 at 1:08 AM
I'm a Quaternary/permafrost geoscientist focused on ground ice, its vulnerability, and the exceptional things found in permafrost. I work with northern govts and communities to understand permafrost change with occasional digressions into the paleo world of permafrost.
Not sure if one tweets or skies here but hopefully Pleistocene mummies can find a home here.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Mummy of a juvenile sabre-toothed cat Homotherium latidens from the Upper Pleistocene of Siberia - Scientific Reports
Scientific Reports - Mummy of a juvenile sabre-toothed cat Homotherium latidens from the Upper Pleistocene of Siberia
www.nature.com
November 14, 2024 at 6:04 PM
Not sure if one tweets or skies here but hopefully Pleistocene mummies can find a home here.
www.nature.com/articles/s41...
www.nature.com/articles/s41...