Glacier deposited soil is called:

Question

Prepp Team · Accepted Answer

Understanding Glacier Deposited Soil Terms

Glaciers are powerful agents of erosion and deposition. As they move, they pick up rocks, sediment, and soil. When the glacier melts or retreats, it deposits this material. The material deposited by glaciers is often referred to by specific terms, which can sometimes be confusing.

Analyzing the Options for Glacier Deposited Soil

Let's look at the options provided and define what each term typically refers to:

Till: This is a type of unsorted glacial sediment. It consists of a mixture of clay, silt, sand, gravel, and boulders that were directly deposited by the ice. It is often compacted.
Loess: This is wind-blown silt. It is typically yellowish or brownish, unconsolidated, and uniform in texture. It is not deposited directly by glaciers, though the original sediment source might sometimes be related to glacial activity (like outwash plains).
Talus: This refers to accumulations of broken rock fragments (scree) found at the base of cliffs or steep slopes. This material breaks off due to weathering and gravity, not directly deposited by glacial ice movement.
Drift: This is a general term used to describe all types of glacial deposits. This includes material deposited directly by the ice (like till) and material deposited by meltwater streams flowing from the glacier (like outwash sand and gravel).

Identifying the Correct Term for Glacier Deposited Soil

The question asks for the term used for "glacier deposited soil". While "Till" is a specific type of material deposited directly by ice, "Drift" is the broader, overarching term that encompasses all materials transported and deposited by a glacier, whether directly by ice or indirectly by meltwater.

Here is a comparison of the terms:

Term	Description	Relationship to Glaciers
Till	Unsorted sediment deposited directly by ice	Direct glacial deposit (type of drift)
Loess	Wind-blown silt	Not a direct glacial deposit (may originate from glacial sediments, but transported by wind)
Talus	Rock fragments at cliff base	Not a direct glacial deposit (formed by weathering and gravity)
Drift	All material transported and deposited by glaciers and their meltwater	General term for all glacial deposits (includes till, outwash, etc.)

Since "Drift" is the most comprehensive term for all glacier-related deposits, including the 'soil' and sediments left behind, it is the appropriate answer.

Revision Table: Glacier Deposits Explained

Concept	Key Takeaway
Glacial Drift	General term for all sediment deposited by glaciers and their meltwater.
Glacial Till	Specific type of drift deposited directly by the ice; unsorted.
Glacial Outwash	Sorted sediment deposited by meltwater streams; a type of drift.

Additional Information on Glacial Landforms

Glacial deposits create various landforms. Some common landforms associated with glacial drift and till include:

Moraines: Ridges or mounds of glacial drift. Types include terminal moraines (at the farthest extent of the glacier), lateral moraines (along the sides), and medial moraines (formed where two glaciers merge).
Drumlins: Elongated hills of till shaped by the movement of glacial ice. They are typically streamlined in the direction of ice flow.
Kames: Mounds, knobs, or short ridges composed of stratified sand and gravel deposited by meltwater in contact with stagnant ice.
Eskers: Long, sinuous ridges composed of stratified sand and gravel, deposited by streams flowing within or under the ice.
Kettle Lakes: Depressions left behind after buried blocks of ice melted within the drift. These depressions often fill with water.

Understanding the different types of glacial deposits helps in identifying the landforms created by past or present glaciation.