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The success with which plants extend their range northward following glacial retreat is best determined by?
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Their seed dispersal rate.
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What are the first to occupy a barren landscape following an event such as glacial retreat called?
pioneer species
What are the first organism to occupy a barren landscape following an event such as glacial retreat called?
The first organism in barren landscape is pioneer species.
Is glacial lake caused by erosion or deposition?
A glacial lake is a lake with origins in a melted glacier. Near the end of the last glacial period, roughly 10,000 years ago, glaciers began to retreat. A retreating glacier often left behind large deposits of ice in hollows between drumlins or hills. As the ice age ended, these melted to create lakes. These lakes are often surrounded by drumlins, along with other evidence of the glacier such as moraines, eskers and erosional features such as striations and chatter marks.
What are glacial striations and glacial erratics?
Striations are "scratches" left in bedrock by glaciers. A small particle of rock, generally pebble sized or smaller, becomes entrained in the base of the glacier and dragged along the surface of the bedrock. These can often be seen on hard bedrock surfaces that are resistant to subsequent weathering after the retreat of the glacier. Erratics are large rocks that are found out of place in the landscape, i.e. not near where they were formed. They are removed from their provenance by a glacier and transported away, before being deposited in a different part or the landscape when the glacier melts.
What happened after the ice age ended?
It hasn't ended. We're in a warm phase. After the last glacial phase ended some 10-12000 years BP: Retreat of ice cover to higher latitudes and altitudes. Rise in sea-level - forming among other things the English Channel in what had been a river valley. Temperate climate zones moving Polewards.
What are the first organismsnto occupy a barren landscape following an event such as glacial retreat called?
Colonization .
What are the first to occupy a barren landscape following an event such as glacial retreat called?
pioneer species
What are the first organisms to occupy a barren landscape following an event such glacial retreat called?
Pioneer species
What are the first organisms to occupy a barren landscape following an event such as glacial retreat?
The first organism in barren landscape is pioneer species.
What are the first organisms to occupy a barren landscape following events such as glacial retreat called?
The first organism in barren landscape is pioneer species.
What are the first organisms to occupy a barren-landscape following an event such as glacial retreat called?
The first organism in barren landscape is pioneer species.
What are the first organisms the occupy a barren landscape following an event such as glacial retreat called?
The first organism in barren landscape is pioneer species.
Under what circumstances will the front of the glacier advance Retreat Remain history?
Glacial advance and retreat is determined by the balance between the accumulation of snow and the removal of ice by sublimation, melting, and calving (ablation). When the rate of ablation below the snowline equal
Is a drumlin caused by erosion?
A drumlin is a land-form from glacial deposition, which was once eroded. It is formed both by erosion and deposition. A drumlin is formed when moraine deposited by a retreating glacier is subsequently reshaped by the returning glacier the following year or after the glacial interval with caused the glacier to retreat in the first place.
The San Juan Islands are a glacial feature left over?
Yes and no. A lot of the material that forms the San Juan islands are leftovers from glacial action. Material abundant on the islands that the glaciers brought includes most of the sand and gravel as well as 'erratic' boulders. Earlier features were also shaped and changed by the glaciers, but there are indeed rock formations in the San Juans that predate the Pleistocene (the most recent 20 or so glacial advances) glaciations. An interesting way to think about glacial effects (bringing material and changing the shapes and surface formations of material that was already present) to consider the southward advance and northward retreat of the glaciers.
What does glaciating mean?
Glaciation refers to climatic episode in which much of the Earth becomes covered with glaciers, reaches a peak in glacial coverage, and then ends with the retreat of glaciers.
What is the geology of Cape Cod seashore?
Cape Cod is made up of glacial moraines and outwash left from the retreat of the Laurentide Ice Sheet during the last ice age.
