#glaciology — Public Fediverse posts

An epishelf lake is a rare body of water where a layer of fresh water floats directly on top of denser, connected ocean salt water, trapped in place by an ice shelf acting as a dam.
#EarthScience #EnvironmentalScience #Glaciology #Hydrology #sflorg
https://www.sflorg.com/2026/09/es09102601.html

This week's #NewBooks at the library: three second-hand books, all revolving around the theme of ice.
- #Antarctica: An Intimate Portrait of the World's Most Mysterious Continent by Gabrielle Walker, published by Bloomsbury Publishing.
- The Ice Finders: How a Poet, a Professor, and a Politician Discovered the #IceAge by Edmund Blair Bolles, published by Counterpoint.
- Glaciovolcanism on Earth and Mars: Products, Processes and Palaeoenvironmental Significance by Benjamin R Edwards and John L Smellie, published by Cambridge University Press.

#Books #Bookstodon #Glaciology #HistoryOfScience #ScienceHistory #HistSci #Volcanology #EarthSciences #Geology #Scicomm @bookstodon

Global Estimates Of Glacier Equilibrium-Line Altitude Ratios For Enhanced Paleoclimate Reconstructions
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https://doi.org/10.1038/s43247-026-03391-5 <-- shared paper
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https://gercglacier.streamlit.app/ <-- Glacier ELA Ratio Calculator (GERC), online tool
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https://www.antarcticglaciers.org/glacier-processes/mass-balance/introduction-glacier-mass-balance/ <-- shared technical article, “An Introduction To Glacier Mass Balance”
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#geostastics #glacier #glacial #landform #cryosphere #spatialanalysis #spatiotemporal #palaeoglaciology #glaciology #global #EquilibriumLineAltitudeRatio #ELA #ratios #paleoclimate #model #modeling #numericalmodeling #classification #decisiontree #steadystate #reconstruction

The New Glacial Geomorphological Map From New Zealand [2021]
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https://blogs.egu.eu/divisions/cr/2021/04/02/new-zealand-geomorphology-glaciers/ <-- shared (2021) technical article/blog, Cryospheric Sciences (CR) Division, @European Geosciences Union
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https://doi.org/10.1080/17445647.2021.1876777 <-- shared (2020) paper
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#GIS #spatial #mapping #NewZealand #geomorphology #NewZealand #SouthernAlps #Quaternary #glaciation #landscape #hydrogeomorphology #water #ice #sediment #glacier #glacial #cryosphere #spatialanalysis #geology #Ahuriri #AhuririRiver #paleolake #WaitakiRiver #basin #remotesensing #postglacial #moraine #glaciology #cryosphere #processes #morphology #LastGlacialMaximum #geochronology

Cryogenian (Geological periods 🌍)

The Cryogenian is a geologic period that lasted from 720 to 635 million years ago. It is the second of the three periods of the Neoproterozoic era, preceded by the Tonian and followed by the Ediacaran. The Cryogenian was a time of drastic climate changes. After the long environmental stability/stagnation during the Boring Billi...

https://en.wikipedia.org/wiki/Cryogenian

#Cryogenian #IceAges #Glaciology #Neoproterozoic #GeologicalPeriods #GeologyControversies

Abrasion (geology) (Glaciology 🗻)

Abrasion is a process of weathering that occurs when material being transported wears away at a surface over time, commonly occurring with ice and glaciers. The primary process of abrasion is physical weathering. Its the process of friction caused by scuffing, scratching, wearing down, marring, and rubbing away of materials. The intensity of abras...

https://en.wikipedia.org/wiki/Abrasion_(geology)

#Abrasion #Erosion #Glaciology #Geomorphology #Sedimentology

Cryogenian (Geological periods 🌍)

The Cryogenian is a geologic period that lasted from 720 to 635 million years ago. It is the second of the three periods of the Neoproterozoic era, preceded by the Tonian and followed by the Ediacaran. The Cryogenian was a time of drastic climate changes. After the long environmental stability/stagnation during the Boring Billi...

https://en.wikipedia.org/wiki/Cryogenian

#Cryogenian #IceAges #Glaciology #Neoproterozoic #GeologicalPeriods #GeologyControversies

Palimpsest (geology) (Paleogeography 🦕)

In geology, a palimpsest is a geographical feature composed of superimposed structures created at different times. Palimpsest is beginning to be used by glaciologists to describe contradicting glacial flow indicators, usually consisting of smaller indicators overprinted upon larger features. The name arises by analogy to a medieval palimpsest, a reused parchmen...

https://en.wikipedia.org/wiki/Palimpsest_(geology)

#Palimpsest #Glaciology #Paleogeography

Pleistocene glacial striations on Devonian and Neoproterozoic rock in New England. Savin Hill, Middlesex Fells, and Mt Monadnock. See captions for details.

#rocks #glaciology #Boston #MiddlesexFells #MountMonadnock #sedimentary #Medford #Neoproterozoic #Devonian #Pleistocene

Last set of examples of soft sediment deformation in the. Squantum Member of the Roxbury Conglomerate, Boston Bay Group; Neoproterozoic and approximately contemporaneous with Gaskiers glaciation.

Although previously interpreted as a tillite (it is still sometimes referred to as the “Squantum Tillite), the “consensus” is now debris flows and turbidites.

#geology #sedimentology #turbidites #glaciology #Boston #Neoproterozoic #geosciences #sedimentary #rocks

Possible dropstone in the Neoproterozoic Squantum Member of the Roxbury Conglomerate, Quincy, Massachusetts USA. See previous posts for more background.
#geology #glaciology #turbidites #Neoproterozoic #sedimentary #conglomerate #rocks