Deposition Flashcards

1
Q

Transportation positions

A

Supraglacial
Englacial
Subglacial

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2
Q

Deposition processes

A

Ice ablation
Lodgement
Deformation
Flow

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3
Q

Ice Ablation

A

Rock debris deposited by melting of surrounding ice

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4
Q

Lodgement

A

Subglacial debris becomes lodged in glacier bed
Friction between debris and bed exceeds drag of glacier

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5
Q

Lodgement till

A

Highly compact
Due to weight of overlying ice
Rounded, less angular

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6
Q

Deformation

A

Rock unable to resist glacial force/pressure

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7
Q

Flow

A

High meltwater content causes rock debris to creep/slide/flow during its release from ice

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