The equilibrium line, also known as the snowline or firnline, marks the boundary between the zone of accumulation and the zone of ablation on a glacier.

the verdict

SUPPORTED

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Recorded sources

4 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that the equilibrium line, also known as the snowline or firnline, marks the boundary between the zone of accumulation and the zone of ablation on a glacier?

Yes. Multiple reliable reference and scientific sources confirm that the equilibrium line, snowline, or firnline marks the boundary between a glacier's zone of accumulation and zone of ablation.

Verdict: SUPPORTED · 4 sources for, 0 against · Last checked 4 Oct 2026

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Evidence for · 4

Wikipedia: Glacier

Reference article covering this claim directly

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Wikipedia: Glacier. (n.d.). Wikipedia. https://en.wikipedia.org/wiki/Glacier

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More for · 3

PLOS (all journals): Spatio-Temporal Characteristics of Global Warming in the Tibetan Plateau during the Last 50 Years Based on a Generalised Temperature Zone - Elevation Model

Mentions equilibrium line altitude (ELA) or snowline in the context of glacier zones.

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PLOS (all journals): Spatio-Temporal Characteristics of Global Warming in the Tibetan Plateau during the Last 50 Years Based on a Generalised Temperature Zone - Elevation Model. (n.d.). PLOS (all journals). https://doi.org/10.1371/journal.pone.0060044

LibreTexts: LibreTexts: 3.31: Glacial Budget

Explicitly states the equilibrium line (or snowline, also called the firnline) marks the boundary between zones of accumulation and ablation.

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LibreTexts: LibreTexts: 3.31%3A Glacial Budget. (n.d.). LibreTexts. https://geo.libretexts.org/Courses/Coalinga_College/Introduction_to_Earth_Science_(C-ID%3A_GEOL_121)/03%3A_The_Hydrosphere/3.31%3A_Glacial_Budget

LibreTexts: LibreTexts: 14.04: Glacial Budget

States that the equilibrium line (or snowline, also called the firnline) marks the boundary between the zones of accumulation and ablation.

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LibreTexts: LibreTexts: 14.04%3A Glacial Budget. (n.d.). LibreTexts. https://geo.libretexts.org/Bookshelves/Geology/Book%3A_An_Introduction_to_Geology_(Johnson_Affolter_Inkenbrandt_and_Mosher)/14%3A_Glaciers/14.04%3A_Glacial_Budget

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