Alaska Glacier MapAlaska
Lemon Creek Glacier

 
Crevassing Just east of Juneau, Alaska is Lemon Creek Glacier.  Lemon Creek Glacier lies at the head of a valley drained by Lemon Creek. It is said to have been named for John Lemon who was reported to have prospected and done some placer mining on this creek with James Hollywood in 1879, a year before Harris and Juneau made their discovery on Gold Creek. John Lemon was in the Cassiar and went to Sitka in 1880. There he joined the Edmond Bean party of prospectors which blazed the trail over Chilkoot Pass to the headwater of the Yukon in the summer of 1880. 
Above you can see the crevassing or fracturing of the glacier as it slowly moves over a change in the elevation of the ground. Nothing has been learned of Lemon following the return of that expedition to the headwaters of the Yukon. James C. Pullen claimed a homestead at the mouth of Lemon Creek in 1881 and other homesteaders followed.
 
 
 
 
 
Looking down into a cravasse Crevasse on Level Section of the Glacier
 
 
 
 
 
 
 
 
 
 

Above is a closeup view of a cravasse on a somewhat level section of the glacier.
 
 

The photo to the left is looking down into the cravasse.
 
 
 
 
 
 
 


   To the left is a pool of water that has melted on the top of the glacier.  The brown substance is glacial silt. This photo covers an area about 1 yard wide.
 
 
 
 
 
 
 
 
 
 
 
 
 


 
 
 
 
 

This photo to the left shows the steep side walls and flat floor of the valley that a glacier has passed through.  This is common of valley glaciers.  The white in the middle of the photo is another glacier.
 
 
 
 
 
 
 
 
 
 
 
 
 
 


Illustration of rocks being formed under different forces This a view that shows a medial moraine.  The brown line in the middle of the glacier is the moraine.  In the drawing below you can see how debris is carried along as it is scraped  from the land at the joining of two glaciers.

Medial Moraine
 
 
 

 
 
 
 
 
 
 
 

As a glacier moves it picks up rocks and soil and carries this material along with its movement.  When a glacier melts it leaves behind the material is was carrying.  These deposits of gravel, sand, sediment, rocks and boulders are called moraines.  The front of a melting glacier will leave behind a curved ridge of debris called a terminal moraine as shown in the center of this photo.  At the upper right corner you can see another form of deposition called an outwash plain.
 
 
 


To the left is a photo of a stream that is running on top  
of the glacier. 
 
 
    To the right the stream 
    disappears into a crevass. 
  
Above you can see the front of a glacier that shows the different colors of the glacier.  To the right and above you can see how a glacier is formed.  The compactness or density of the ice causes the deeper blue color.

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