Cold Cuts: Glaciers Sculpt Steep Peaks

Presse/Medien

Beschreibung

A new global analysis of peaks suggests that rather than limiting mountain height at high latitudes and altitudes, glaciers may make these peaks pointier and taller. By carving out U-shaped valleys, glaciers lighten the load of the mountain range, allowing the scraped-out piece of crust to float higher on Earth’s fluid mantle, like an unloaded boat.

“If you have very steep peaks and large, deep valleys, the load of the mountain range above the sea level is quite low,” said Jörg Robl, a geodynamics modeler at the University of Salzburg in Austria, “so even a thinner crust is sufficient to support very high peaks.”

Thema

In environments raked by glaciers, tall peaks like Denali still survive, held up by surprisingly thin crust.

Zeitraum20 Mai 2020

Medienabdeckung

1

Medienabdeckung

  • TitelCold Cuts: Glaciers Sculpt Steep Peaks
    BekanntheitsgradInternational
    MedienformatWeb
    LandUSA/Vereinigte Staaten
    Datum der Veröffentlichung20/05/20
    BeschreibungA new global analysis of peaks suggests that rather than limiting mountain height at high latitudes and altitudes, glaciers may make these peaks pointier and taller. By carving out U-shaped valleys, glaciers lighten the load of the mountain range, allowing the scraped-out piece of crust to float higher on Earth’s fluid mantle, like an unloaded boat.
    Produzent/AutorPatricia Waldron
    URLhttps://eos.org/articles/cold-cuts-glaciers-sculpt-steep-peaks
    PersonenJörg Christian Robl