Back to Practice Sheet Page

GLACIAL LANDFORM ANSWER SHEET

picture

        The arrows point to some streamlined shaped hills.  The general topography is hummucky.  Are these features of a continental ice sheet or a mountain glacier?  What are they.

Text Box:  
picturepicture        This is a relative flat area, not mountainous.  Therefore begin too look for features of a continental ice sheet.  Remember that these features are typically depositional.  "Stream-lined shaped hills" is in the definition of drumlins.  The direction of ice movement is from the steep side of the hill, shown by the close contours, towards the gentle side.

picturepicturepicture

        The quality of this is not a good as some, but the arrows are pointing to two long sinuous hills or ridges.  First ask yourself is this a continental ice sheet feature or a mountain glacier feature?  Then determine what it is?

        Once again, this is not mountainous and therefore we are dealing with a continental ice sheet that typically leaves depositional features.  these are eskers which are created by streams flowing under the ice sheet.

picturepicturepictureText Box:  
picture

        Is this a mountainous area?  The red arrows are pointing to Ptarmigan Wall.  Look at this feature and describe it.  What is it?

                Arrows marked A are pointing at several glaciers along a ridge line.  Underneath these glaciers is a spoon shaped depression.  What is it?

        Iceberg Lake is a lake in such a depression.  What is it?

        Arrow marked B is pointing at a mountain top.  What is it?

        This is obviously a mountainous area.  The red arrows point at a knife edged ridge.  This is the description of an arete.

        The A arrow points at glaciers that lie in a cirque.

        Iceberg Lake is a tarn

        The B arrow is pointing at a horn.

picture

        Note the valley that Mono Village is located in.  Is this a stream cut valley or a glacially cut valley?  How do you tell?

        Coming in from the south are two valleys, tributary valleys.  Each has a water fall in it.  Note how steep the valley wall is just north of the word "fall" in each of the valleys.  What type of valley are these?

        This valley has a relatively flat, wide floor.  The valley walls are steep.  This is a glacially carved valley.

        The  tributary valleys with water falls are hanging valleys.

picture

        Are we dealing with a mountain glacier or a continental ice sheet?  Note that just north and south of Turquoise Lake there appears to be a steep gradient.  The red arrows mark a mound of sediment that ponds water to create Turquoise Lake.  What is the mound of sediment called?

        There is a mountain front here.  The valley to the west of Turquoise Lake has a broad flat valley floor, characteristic of a glacially carved valley.  The mound of sediment is out from the valley and is composed of material that was brought down by a mountain glacier.  This material marks the end of the glacier and is thus termed a terminal moraine.