subfossilguy's profile picture. Assiduous dendroglaciologist, moraine lover, wandering geomorphologist, living in the Holocene, climate (and eco-) anxious, @edytem_fr

Melaine Le Roy

@subfossilguy

Assiduous dendroglaciologist, moraine lover, wandering geomorphologist, living in the Holocene, climate (and eco-) anxious, @edytem_fr

مثبتة

Still at #merdeglace for Day 6 of #7daysoffieldwork to celebrate 10 years of sampling and ~400 subfossil wood samples retrieved from this single moraine ! 🌲💍 #treerings #fieldwork #chamonix

subfossilguy's tweet image. Still at #merdeglace for Day 6 of #7daysoffieldwork to celebrate 10 years of sampling and ~400 subfossil wood samples retrieved from this single moraine ! 🌲💍
#treerings #fieldwork #chamonix
subfossilguy's tweet image. Still at #merdeglace for Day 6 of #7daysoffieldwork to celebrate 10 years of sampling and ~400 subfossil wood samples retrieved from this single moraine ! 🌲💍
#treerings #fieldwork #chamonix
subfossilguy's tweet image. Still at #merdeglace for Day 6 of #7daysoffieldwork to celebrate 10 years of sampling and ~400 subfossil wood samples retrieved from this single moraine ! 🌲💍
#treerings #fieldwork #chamonix
subfossilguy's tweet image. Still at #merdeglace for Day 6 of #7daysoffieldwork to celebrate 10 years of sampling and ~400 subfossil wood samples retrieved from this single moraine ! 🌲💍
#treerings #fieldwork #chamonix

Grande Casse W face (3855 m) 1925 | 2025 Highest peak in Vanoise 100 yr apart! 🧊😰 Gde Casse Gl. (center) and Gds Couloirs Gl. (R) Gde Glière (3392 m, L)⛰️ 📷 B. Vion 4 m of thickness loss have been measured in the Grands Couloirs btw mid 2022 and 2025 🔥📈 Data X. Cailhol 🙏


One of my subfossil sample presented alongside a magnificent abstract ice photo by @glacionaut! 🧊🌲🥰

subfossilguy's tweet image. One of my subfossil sample presented alongside a magnificent abstract ice photo by @glacionaut! 🧊🌲🥰

🧊 Glacier Blanc 2025 mass balance ⚖️ Accumulation/ablation were more or less conform to the (strongly negative) average over the last 25 yrs, yielding a net balance of -0,73 m w.e. 📈 ~Clean snowpack (without saharan dust this year)! ecrins-parcnational.fr/actualite/glac…

subfossilguy's tweet image. 🧊 Glacier Blanc 2025 mass balance ⚖️

Accumulation/ablation were more or less conform to the (strongly negative) average over the last 25 yrs, yielding a net balance of -0,73 m w.e. 📈

~Clean snowpack (without saharan dust this year)!

ecrins-parcnational.fr/actualite/glac…
subfossilguy's tweet image. 🧊 Glacier Blanc 2025 mass balance ⚖️

Accumulation/ablation were more or less conform to the (strongly negative) average over the last 25 yrs, yielding a net balance of -0,73 m w.e. 📈

~Clean snowpack (without saharan dust this year)!

ecrins-parcnational.fr/actualite/glac…
subfossilguy's tweet image. 🧊 Glacier Blanc 2025 mass balance ⚖️

Accumulation/ablation were more or less conform to the (strongly negative) average over the last 25 yrs, yielding a net balance of -0,73 m w.e. 📈

~Clean snowpack (without saharan dust this year)!

ecrins-parcnational.fr/actualite/glac…
subfossilguy's tweet image. 🧊 Glacier Blanc 2025 mass balance ⚖️

Accumulation/ablation were more or less conform to the (strongly negative) average over the last 25 yrs, yielding a net balance of -0,73 m w.e. 📈

~Clean snowpack (without saharan dust this year)!

ecrins-parcnational.fr/actualite/glac…

UTTERLY SURREAL LOW ANGLE GLACIER SLIDE!! 😮😱 On Saturday at 11:00 am, a 2 km-long, 25 m-high, and 150-200 m in width section detached off the Ismoil Somoni Glacier (Tajikistan) and slid down the gorge! 🧊🌊 asiaplustj.info/en/node/354309 📽️ via @volcaholic1


Astazou east Glacier (Spanish Pyrenees) 1890 | 2025 📷 Eugène Trutat Mathieu Lavigne

subfossilguy's tweet image. Astazou east Glacier (Spanish Pyrenees)
1890 | 2025

📷 Eugène Trutat
Mathieu Lavigne

Eastern Fee Glacier 1980 | 2025 📷 Filippo Kratter

subfossilguy's tweet image. Eastern Fee Glacier 
1980 | 2025

📷 Filippo Kratter

Sunrise on the upper Guisane Valley from around Col du Lautaret (2 058) this morning! ☀️🥰

subfossilguy's tweet image. Sunrise on the upper Guisane Valley from around Col du Lautaret (2 058) this morning! ☀️🥰

La Meije (3983 m) this morning after yesterday's snowfall! 😍

subfossilguy's tweet image. La Meije (3983 m) this morning after yesterday's snowfall! 😍

Les Agneaux (3 664 m) this morning after yesterday snowfall! 😍❄️ Check our recent paper for the Holocene glacial history of this place! 🧊 sciencedirect.com/science/articl…

subfossilguy's tweet image. Les Agneaux (3 664 m) this morning after yesterday snowfall! 😍❄️

Check our recent paper for the Holocene glacial history of this place! 🧊
sciencedirect.com/science/articl…

Re-sampling today of an in situ stump discovered 50 years ago! Quite moving... ⏳️ At that time it was dated 815 BP and was thought to have been killed by a Medieval advance of Roseg Glacier!🧊🌊 Let's see what tree rings will tell! 🌲💍

subfossilguy's tweet image. Re-sampling today of an in situ stump discovered 50 years ago!
Quite moving... ⏳️

At that time it was dated 815 BP and was thought to have been killed by a Medieval advance of Roseg Glacier!🧊🌊

Let's see what tree rings will tell! 🌲💍
subfossilguy's tweet image. Re-sampling today of an in situ stump discovered 50 years ago!
Quite moving... ⏳️

At that time it was dated 815 BP and was thought to have been killed by a Medieval advance of Roseg Glacier!🧊🌊

Let's see what tree rings will tell! 🌲💍
subfossilguy's tweet image. Re-sampling today of an in situ stump discovered 50 years ago!
Quite moving... ⏳️

At that time it was dated 815 BP and was thought to have been killed by a Medieval advance of Roseg Glacier!🧊🌊

Let's see what tree rings will tell! 🌲💍
subfossilguy's tweet image. Re-sampling today of an in situ stump discovered 50 years ago!
Quite moving... ⏳️

At that time it was dated 815 BP and was thought to have been killed by a Medieval advance of Roseg Glacier!🧊🌊

Let's see what tree rings will tell! 🌲💍

Otemma, Brenay and Giétro Glaciers (Val de Bagnes, Valais) from a plane yesterday! 🤩 📷 @geolnuc

subfossilguy's tweet image. Otemma, Brenay and Giétro Glaciers (Val de Bagnes, Valais) from a plane yesterday! 🤩

📷 @geolnuc

Piz Roseg (3935 m) tonight! 😍

subfossilguy's tweet image. Piz Roseg (3935 m) tonight! 😍

Piz Bernina (4049 m), Piz Scerscen (3970 m) and Tschierva Glacier tonight! 😍

subfossilguy's tweet image. Piz Bernina (4049 m), Piz Scerscen (3970 m) and Tschierva Glacier tonight! 😍

The Piz Scerscen (3970 m) scar has known recent reactivation (after last snowfall) as shown in this view from today! 😲

subfossilguy's tweet image. The Piz Scerscen (3970 m) scar has known recent reactivation (after last snowfall) as shown in this view from today! 😲

First rays on Piz Roseg (3935 m) this morning! 🤩

subfossilguy's tweet image. First rays on Piz Roseg (3935 m) this morning! 🤩

Dear geomorphologists, How would you call that landform? Perfect example shot today at Loriaz, Vallorcine, by @lomdumtblanc.bsky.social 🙏

subfossilguy's tweet image. Dear geomorphologists,
How would you call that landform?

Perfect example shot today at Loriaz, Vallorcine, by @lomdumtblanc.bsky.social 🙏

Piz Bernina this morning! 😍

subfossilguy's tweet image. Piz Bernina this morning! 😍

This totally made my day! 🥰 Absolutely cute cm-scale differential erosion landforms spotted today in the forefield of Fiesch Glacier! Looks like a fairytale scenery! 🤍 If this has a name, I want to know it!

subfossilguy's tweet image. This totally made my day! 🥰

Absolutely cute cm-scale differential erosion landforms spotted today in the forefield of Fiesch Glacier! 

Looks like a fairytale scenery! 🤍

If this has a name, I want to know it!

Pretty wild place ! 😱 Obviously the most secret of the large Alpine glaciers (rank=4th), this is the actual active front of Fiesch Glacier today (~1700 m asl)! 🧊🌊

subfossilguy's tweet image. Pretty wild place ! 😱

Obviously the most secret of the large Alpine glaciers (rank=4th), this is the actual active front of Fiesch Glacier today (~1700 m asl)! 🧊🌊

Aletsch Glacier tonight! 🥰

subfossilguy's tweet image. Aletsch Glacier tonight! 🥰

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