Glaciation

GLACIER PICTURE

FAMOUS GLACIERS:

Malaspina Glacier (Location: Yakutat Bay in Alaska)

Aletsch Glacier (Location: Alps Mountains)



Franz Josef Glacier (Location: New Zealand)



Glaciers mainly erode things lke rocks and erosion happening in a glacier are freeze-thaw, plucking and abrasion.





GLACIER FEATURES FORMED BY EROSION: 1. ICE FALL & CAVE 2. GLACIER TERMINUS 3. CREVASSE 4. OGIVE

ICE CAVE CREVASSE GLACIAL DEPOSITION FEATURES > > > PUSH MORAINE > > > > MEDIAL MORAINE > > > WHY ARE GLACIERS IMPORTANT TO HUMANS? > Glaciers are important to humans because they control the temperature of the earth. If there are loads of them, ICE AGE has begun but if there are small amount of glaciers, global warming has begun. However, as we all know global warming has already begun which means that many glaciers have gone away. > > WHAT IS AN ICE AGE? > An ice age, which is also called as glacier period is a natural system which happens with in long periods of time. Basically, it means that the whole world is covered in ice because the temperature went down and an ice age would last at least 1000000 years to end!!! (JOKING) > > > >
 * Glacial flour - rock ground to the texture of a fine powder. It usually flows out of a glacier as sediment in a glacial meltwater stream running from the glacier.
 * Till - refers to an unconsolidated and unsorted mixture of sediment, clay, gravel, and rocks deposited by a glacier.
 * Moraine - a French word that refers to any glacier-formed accumulation - there are a variety of moraines.
 * Terminal moraine - an accumulation at the outermost edge of where a glacier or ice sheet existed.
 * Recessional moraine - moraine located "behind" the outermost edge of a glacier, formed when the glacier lingers in one spot for a long time.
 * Ground moraine - gently rolling hills and plains deposited by ice.
 * Lateral moraine - ridges of till on the sides of a glacier.
 * Medial moraine - a moraine formed when two glaciers merge (a tributary and trunk glacier) and their lateral moraines come together to form a single moraine.
 * Push moraine - a moraine created by till that was a moraine deposited by an earlier glacier that once covered the area.
 * Ablation moraine - a moraine formed from material that fell upon the glacier.
 * Glacial erratics - large boulders that had been carried by the ice and deposited. They are much different in size than surrounding till.