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Callan Bentley

@callanbentley.bsky.social

"bluebirds, bluegrass, blueschist, bluesky" Community college geology professor in Charlottesville, Virginia, USA

3,024 Followers  |  1,070 Following  |  2,602 Posts  |  Joined: 02.11.2023  |  2.2746

Latest posts by callanbentley.bsky.social on Bluesky

Saw the new Frankenstein movie in the theater. I thought it was quite good. πŸ‘

01.11.2025 02:00 β€” πŸ‘ 7    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

There's one other ~2 m tall outcrop on that road, but this Is the one where I took that photo

31.10.2025 20:13 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I hope the park is reopened by then... ☹️

31.10.2025 17:15 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

The outcrop is here: maps.app.goo.gl/6hEuwaVVFVoS...

31.10.2025 16:58 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

There is water
At the bottom of the ocean

31.10.2025 14:10 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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For those not familiar with the source material...

31.10.2025 14:05 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Callan looking much wider and dark-haired than usual. He wears a costume consisting of a very wide suit supported internally for a wide sideways but thin front-to-back shape: slab-like, akin to Gumby.

Callan looking much wider and dark-haired than usual. He wears a costume consisting of a very wide suit supported internally for a wide sideways but thin front-to-back shape: slab-like, akin to Gumby.

Close-up of Callan's "Big Suit" costume framed around a VHS tape of the Talking Heads concert film "Stop Making Sense," posed in the same posture as David Byrne's Big Suit is on the VHS tape cover.

Close-up of Callan's "Big Suit" costume framed around a VHS tape of the Talking Heads concert film "Stop Making Sense," posed in the same posture as David Byrne's Big Suit is on the VHS tape cover.

My favorite Halloween costume from my past - David Byrne's "Big Suit" from the Talking Heads movie "Stop Making Sense"

31.10.2025 14:04 β€” πŸ‘ 18    πŸ” 0    πŸ’¬ 3    πŸ“Œ 0
Varves white gypsum and dark brown calcite laminations where in the center of the field of view is a prominent set of layers that have been folded and overturned to the left. Particularly striking is the THICK triangles of calcite beneath the anticlines, showing I guess a detaching of the behavior of the asymmetrically folded layers relative to run of the mill symmetric folds below. Fingers for scale.

Varves white gypsum and dark brown calcite laminations where in the center of the field of view is a prominent set of layers that have been folded and overturned to the left. Particularly striking is the THICK triangles of calcite beneath the anticlines, showing I guess a detaching of the behavior of the asymmetrically folded layers relative to run of the mill symmetric folds below. Fingers for scale.

Asymmetric #FridayFold in Castile Formation evaporites, state line outcrop, Permian Basin, TX/NM. βš’οΈ

31.10.2025 10:44 β€” πŸ‘ 50    πŸ” 7    πŸ’¬ 1    πŸ“Œ 0

☹️

30.10.2025 20:57 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Anyone else might want to contribute work to fundraise for PRI? If someone is willing to coordinate and run the auction, i will certainly spread the call to all my #sciart friends πŸ₯°

30.10.2025 18:59 β€” πŸ‘ 6    πŸ” 5    πŸ’¬ 1    πŸ“Œ 0

There's more where that came from!
opengeology.org/historicalge...
βš’οΈ

30.10.2025 14:35 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Visiting PRI was a highlight of the NAGT Eastern Section meeting in 2023. It's such a treasure.βš’οΈ

30.10.2025 10:53 β€” πŸ‘ 19    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0
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Alrighty, ready to see something really cool? (and maybe a little nauseating)

The evolution of Hurricane Melissa's mesovortices at peak strength.

29.10.2025 20:10 β€” πŸ‘ 837    πŸ” 301    πŸ’¬ 35    πŸ“Œ 26

You all, don't spend even ten seconds of your precious life browsing Grokipedia.

Nothing good will come of it.

Your attention adds value to something of no value.

πŸ‘ŽπŸ‘ŽπŸ‘Ž

29.10.2025 22:58 β€” πŸ‘ 25    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

Fair winds and following seas, my friend.

29.10.2025 22:28 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Been there, Gigapanned that!
viewer.gigamacro.com/view/O179g76... βš’οΈ

29.10.2025 15:27 β€” πŸ‘ 17    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

The states in gray are the states where the governors are more afraid of Trump than they are of killing the people they were elected to represent.

29.10.2025 11:17 β€” πŸ‘ 235    πŸ” 77    πŸ’¬ 6    πŸ“Œ 1
Photograph showing a block of limestone with vertical slickensides. A few out-of-focus people look at rocks in the background.

Photograph showing a block of limestone with vertical slickensides. A few out-of-focus people look at rocks in the background.

π™Žπ™‘π™žπ™˜π™ !
(Faulting associated with the Sugarloaf landslide in McKelligon Canyon, east side of the Franklin Mtns, near El Paso, TX.)
βš’οΈ

29.10.2025 11:26 β€” πŸ‘ 16    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Very nice stuff. I'd love a slab for teaching, and I would be happy to cover the cost of shipping!!

28.10.2025 23:02 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

β€œHow did the Super Pandemic of 2026 start, Grandpa?”

β€œWell, Timmy β€”β€œ

28.10.2025 22:22 β€” πŸ‘ 604    πŸ” 111    πŸ’¬ 36    πŸ“Œ 7

πŸ‘‡πŸ’―πŸ‘‡

28.10.2025 22:26 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

"smells like money"

28.10.2025 12:02 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Photograph of rock outcrop with fingers for scale showing dozens of horizontal white and black lines
 The white lines are 2-3 mm thick; a few may be 4 mm top to bottom. The black lines are thinner, 1 mm maximum is my guess.

Photograph of rock outcrop with fingers for scale showing dozens of horizontal white and black lines The white lines are 2-3 mm thick; a few may be 4 mm top to bottom. The black lines are thinner, 1 mm maximum is my guess.

Varves in Castile Formation: seasonal wet/dry variations recorded by alternation between gypsum (white) + calcite (dark) laminae.
βš’οΈ

28.10.2025 10:13 β€” πŸ‘ 38    πŸ” 3    πŸ’¬ 2    πŸ“Œ 0
Jamaica’s crazy mountains will make Hurricane Melissa even more dangerous | Mudslide hazard
YouTube video by TheGeoModels Jamaica’s crazy mountains will make Hurricane Melissa even more dangerous | Mudslide hazard

Philip Prince discussing how the geography of Jamaica is going to govern landslide impacts upon Hurricane Melissa's landfall tonight & tomorrow. youtu.be/QQ4a_01mGQY?... βš’οΈ

27.10.2025 19:05 β€” πŸ‘ 9    πŸ” 4    πŸ’¬ 1    πŸ“Œ 0
Flyer for Kat Canter's presentation: "Plan, Core, Scan, Store: Facilitating Core Research"

Flyer for Kat Canter's presentation: "Plan, Core, Scan, Store: Facilitating Core Research"

Flyer for Paul Bierman's presentation: "Why Greenland Matters to All of Us (hint: it's the ice)"

Flyer for Paul Bierman's presentation: "Why Greenland Matters to All of Us (hint: it's the ice)"

Flyer for David Bapst's presentation: "Evolutionary Constraint and Convergence in the Extinct Planktonic Graptolites"

Flyer for David Bapst's presentation: "Evolutionary Constraint and Convergence in the Extinct Planktonic Graptolites"

Excited about next month's Geology Club speakers! βš’οΈ

27.10.2025 17:35 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

☹️

27.10.2025 17:30 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

That's a placeholder. I have to fix a small issue with the Alleghanian case study before publishing it.
But thanks!

27.10.2025 16:22 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Large Igneous Provinces – Historical Geology

New case study on Large Igneous Provinces (LIPs) in my (free, online) Historical Geology textbook: opengeology.org/historicalge... βš’οΈ

27.10.2025 13:58 β€” πŸ‘ 23    πŸ” 6    πŸ’¬ 2    πŸ“Œ 2
Tight chevron folding in the cliffs near Millook Haven. Lighter beds are more competent sandstones while darker strata are mudstones.

Tight chevron folding in the cliffs near Millook Haven. Lighter beds are more competent sandstones while darker strata are mudstones.

Pale sandstones and darker mudstones in alternating turbidite sequence. Beds are overturned with younging to the right. Lumpy texture on right-hand sandstone bed are load casts where the denser sand sunk down into the less dense mudstone underneath. Eroded flame structures visible. Red rucksack for scale.

Pale sandstones and darker mudstones in alternating turbidite sequence. Beds are overturned with younging to the right. Lumpy texture on right-hand sandstone bed are load casts where the denser sand sunk down into the less dense mudstone underneath. Eroded flame structures visible. Red rucksack for scale.

View from the cliff looking down onto the foreshore. Clear bedding is visible with a tight plunging synform on the left and a tight plunging antiform on the right. Grey skies and sea behind.

View from the cliff looking down onto the foreshore. Clear bedding is visible with a tight plunging synform on the left and a tight plunging antiform on the right. Grey skies and sea behind.

Evidence of soft sediment deformation, with contorted slumped bedding. Darker discontinuous mudstone strata within the paler sandstone in the centre, and vice versa to the right.

Evidence of soft sediment deformation, with contorted slumped bedding. Darker discontinuous mudstone strata within the paler sandstone in the centre, and vice versa to the right.

Thoroughly enjoying checking out the spectacular folded and overturned Carboniferous-aged turbidities near Millook Haven on the NE Cornish coast.

Lovely sedimentary structures - graded bedding, slumps, load casts, flutes, all subsequently squeezed into tight chevron folds ::chef’s kiss::

βš’οΈπŸ§ͺ🌍

26.10.2025 19:01 β€” πŸ‘ 81    πŸ” 18    πŸ’¬ 7    πŸ“Œ 0

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