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Duane Froese @tephrafan.bsky.social · Aug 6

A new exposure on Sulphur.

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Duane Froese @tephrafan.bsky.social · Aug 4

Would be isotopically so interesting if accessible.

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Duane Froese @tephrafan.bsky.social · Aug 4

Crazy ice wedge day. 10-12 m high syngenetic ice wedge spanning the Late Pleistocene—early Holocene boundary. #klondike #permasfrost

Photo of an ice rich permafrost exposure with thin aggrading (syngenetic) ice wedge.

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INSTAAR 🏳️‍🌈 @instaar.bsky.social · Dec 19

🙏🏽 Thank you Duane Froese (Professor, Univ of Alberta, @tephrafan.bsky.social) for your cover photo of INSTAAR's peer-reviewed, open-access journal Arctic, Antarctic, & Alpine Research. The area depicted is a rich source of Ice Age vertebrate fossils & paleoenvironmental information. More below ⬇️

Arctic, Antarctic, and Alpine Research @aaarjournal.bsky.social · Dec 16

Each AAAR issue features a cover image that is significant to the contents in that issue. This year has @DuaneFroese’s photo of the Old Crow River within the Vuntut Gwitchin Traditional Territory. Read more on the photo & why it’s the 2024 cover here: doi.org/10.1080/15230430.2024.2308444

About the Cover - Arctic, Antarctic, and Alpine Research, Volume 56(1)

Published in Arctic, Antarctic, and Alpine Research: An Interdisciplinary Journal (Vol. 56, No. 1, 2024)

doi.org

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Theron Finley @theronfinley.bsky.social · Jul 16

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

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

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Duane Froese @tephrafan.bsky.social · Jul 19

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!

Theron Finley @theronfinley.bsky.social · Jul 16

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

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

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Duane Froese @tephrafan.bsky.social · May 24

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/...

Image of the cover of the journal Science with two horses galloping across a meadow, highlighting the accompanying paper.

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Duane Froese @tephrafan.bsky.social · May 16

I laughed. And probably best it’s a different Brent.

Duane Froese @tephrafan.bsky.social · Apr 28

The Ukrainian Sherpa UTV all conditions buggy, including amphibious. A spring fieldwork dream…not ours just interloping on their ride with some frozen materials.

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Duane Froese @tephrafan.bsky.social · Apr 25

Winning!

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Canadian Journal of Earth Sciences @canjearthsci.bsky.social · Mar 31

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

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Duane Froese @tephrafan.bsky.social · Apr 3

I bought my copy from Aquila books in Calgary. Not sure if they’re still there.

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Duane Froese @tephrafan.bsky.social · Apr 3

Not sure if you ever read Lew Green’s excellent ‘the Boundary Hunter’s’ about A.O.Wheeler, Ogilvie and the late 19th and early 20th C surveyors of the AK border. 141st Longitude and AK panhandle. It’s a great read.

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Duane Froese @tephrafan.bsky.social · Feb 27

There’s a book by Frankfurt (it’s quite short) called On Bullshit that’s worth a read.

en.m.wikipedia.org/wiki/On_Bull...

On Bullshit - Wikipedia

en.m.wikipedia.org

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Duane Froese @tephrafan.bsky.social · Feb 26

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/...

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

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Duane Froese @tephrafan.bsky.social · Feb 20

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

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Duane Froese @tephrafan.bsky.social · Feb 7

Yes. And I doubt they will ever go back. Mixed feelings about it. It’s definitely efficient. Though this year with some complex family needs it was welcome.

Duane Froese @tephrafan.bsky.social · Feb 7

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.

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Duane Froese @tephrafan.bsky.social · Feb 7

In a crazy multiverse sort of way, there will be those that have greater success with changes at NSF.

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Duane Froese @tephrafan.bsky.social · Feb 7

Will the Grievious Angels ever come west?

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Duane Froese @tephrafan.bsky.social · Jan 27

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

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Duane Froese @tephrafan.bsky.social · Jan 7

A very cool ancient eDNA paper from Tyler Murchie’s PhD that shows the co-occurrence of distinctive plant, animal, microbial and even gut microbiome communities associated with megafauna and their extinction/extirpation.

onlinelibrary.wiley.com/doi/full/10....

Permafrost microbial communities follow shifts in vegetation, soils, and megafauna extinctions in Late Pleistocene NW North America

Using sedimentary ancient DNA from permafrost sediments deposited between 30,000 and 4000 years ago in Yukon, Canada, we explore whether there were changes in microbial communities paralleling the tr...

onlinelibrary.wiley.com

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Duane Froese @tephrafan.bsky.social · Jan 7

A couple of recent ancient eDNA papers on Klondike permafrost if you’re interested.

www.sciencedirect.com/science/arti...

Relict permafrost preserves megafauna, insects, pollen, soils and pore-ice isotopes of the mammoth steppe and its collapse in central Yukon

In eastern Beringia (unglaciated Alaska and western Yukon), the Pleistocene-Holocene transition was characterised by rapid changes in plant, insect an…

www.sciencedirect.com

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Duane Froese @tephrafan.bsky.social · Jan 7

View of the Mountain River joining the Mackenzie (Deh Cho) upstream of Fort Good Hope. The Mackenzie (looking north) widens with the addition of the coarse load, becoming braided upstream of the Ramparts. #Sahtu region, #NWT

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Duane Froese @tephrafan.bsky.social · Dec 19

Is it really? Conspiracy nonsense.

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Duane Froese @tephrafan.bsky.social · Dec 19

bsky.app/profile/inst...

INSTAAR 🏳️‍🌈 @instaar.bsky.social · Dec 19

🙏🏽 Thank you Duane Froese (Professor, Univ of Alberta, @tephrafan.bsky.social) for your cover photo of INSTAAR's peer-reviewed, open-access journal Arctic, Antarctic, & Alpine Research. The area depicted is a rich source of Ice Age vertebrate fossils & paleoenvironmental information. More below ⬇️

Arctic, Antarctic, and Alpine Research @aaarjournal.bsky.social · Dec 16

Each AAAR issue features a cover image that is significant to the contents in that issue. This year has @DuaneFroese’s photo of the Old Crow River within the Vuntut Gwitchin Traditional Territory. Read more on the photo & why it’s the 2024 cover here: doi.org/10.1080/15230430.2024.2308444

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Duane Froese @tephrafan.bsky.social · Dec 19

#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.

Two tired students with more than 1000 fossils from a single locale, collected in 2-3hrs from the head of a point bar at low water.

The point bar site that took 4 of us 2-3hrs to collect the pile of fossils in the left of the photo.

Two juvenile and one mature mammoth tooth.

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Duane Froese @tephrafan.bsky.social · Dec 5

That format helps a lot. I still get them to write an intro, lit review/methods chapter. Then the results chapter is the draft manuscript, followed by conclusions. Leads to some repetition, but that’s pretty common in our department. I also make sure they have very complete data appendices.

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