Glacial Erosional Forms

The theme of glacial erosion forms includes microforms and landforms produced by glacial erosion (e.g. striations, grooves, boulders, etc.). The recognition of these marks, their distribution and the observation of polarity criteria allow the interpretation of the direction and sense of ice flow and the reconstruction of the evolution of glacial transport for a given territory. Glacial erosion marks are represented on maps of surficial deposits as a dot and are superimposed on morphosedimentological zones.

The list of symbols is also available in PDF format.

ASC

Other (known direction)

Point
ASI

Other (unknown fl ow direction)

Point
BCN

Concave crescentic fracture

Point
BCV

Convex crescentic fracture

Point
BCH

Conchoidal crescentic fracture

Point
CSC

Groove (known direction)

Point
CSI

Groove (unknown direction)

Point
CAB

Glacial groove with crescentic fracture

Point
DOB

Whaleback

Point
FRB

Chatter marks

Point
FSC

S-form (known direction)

Point
FSI

S-form (unknown direction)

Point
QDR

Rat-tail

Point
ROM

Roche moutonnée

Point
ROP

Streamlined outcrop

Point
STC

Nailhead striation

Point
STSC

Simple striation (known direction)

Point
STSI

Simple striation (unknown direction)

Point