description Johnson Esker Overview
help Johnson Esker FAQ
What is Johnson Esker?
Johnson Esker is a geological formation in Canada. It is notable as a classic example of a subglacial tunnel fill.
How was Johnson Esker formed?
An esker forms when sediment is deposited by meltwater flowing through a tunnel beneath glacial ice. Johnson Esker represents this process during the Late Pleistocene epoch.
What is a subglacial tunnel fill?
A subglacial tunnel fill is sediment left behind in a meltwater channel beneath a glacier. When the ice disappears, the deposited material can remain as a long, raised esker.
Which geological period is associated with Johnson Esker?
Johnson Esker is associated with the Late Pleistocene epoch. It is used as an example of landforms created beneath former ice sheets.
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