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When and how do glaciers advance?
Glaciers advance when the weight of the new snow that piles on top of the glacier gets heavy enough to push it downhill.
If you saw long scratch marks on a flat rock surface you would suspect what?
The geologist would suspect that these were striae, which are marks made by a glacier dragging rocks over the bedrock.
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
What is a glacier snout?
a glacier snout is the front of the glacier :)
What is a growing glacier different from a melting glacier?
A melting glacier gets smaller, but a growing glacier gets bigger.
What is the maraine called that marks the farthest advance of a glacier?
A terminal moraine marks the farthest advance of a glacier.Locally, we have some terminal moraines of hundreds of thousands of years old, and ranging down to about 18 000 years.
What marks the farthest advance of a glacier?
An extensive pile of till (loose debris & rocks) called an end moraine can build up at the front of the glacier and is typically crescent shaped. Two kinds of end moraines are recognized: terminal and recessional moraines. A terminal moraine is the ridge of till that marks the farthest advance of the glacier before it started to recede. A recessional moraine is one that develops at the front of the receding glacier; a series of recessional moraines mark the path of a retreating glacier.
How can terminal and lateral moraines form glacial lakes?
A lateral moraine is formed at the side of a glacier. Falling ice can melt and form a lake. Similarly, a terminal moraine marks the farthest advance of a glacier where all the ice typically melts.
Under what circumstances will the front of a glacier advance?
A glacier is always moving forward (downhill). In the winter, the glacier usually isn't melting and its front edge (or "toe") will advance downhill. In the summer, the toe of the glacier usually melts faster than the glacier is moving forward, causing the front edge of the glacier to recede. If the recession in the summer is greater than the advance in the winter, then the glacier as a whole is receding and will eventually disappear. That is what is currently happening to most of the glaciers in North America and many other places around the world.
What city marked the furthest advance made by napoleons army in 1812?
moscow
When and how do glaciers advance?
Glaciers advance when the weight of the new snow that piles on top of the glacier gets heavy enough to push it downhill.
What relationship between accumulation and ablation is necessary for the ice front of a glacier to advance?
The accumulation or snowfall rate needs to exceed the ablation which is the snow or ice melting rate in order for a glacier to advance or move forward. ~hope I'm right!
How does a glacier advance?
Gravity pulls it twords the earth, and it melting may have something to do with it. God luck out there. ;)
What are glacier scratches?
These marks are called striae and are the parallel marks left on the bedrock when rocks entrained in the glacier scrape along the glacier's base..These are part of the origin of the features called moutonne roches = rock sheep. Which were NOT your usual merino, but were the nick name given to judges wigs, which, when lying on the bench, had similarities with the geological features; the shape being similar, and the striae resembling the marks left on the rock. At least according to some authorities such as Holmes.
What is advancing glacier?
A Glacier will advance when the snow deposited in the collection zone exceeds the rate of melting at the terminus. There will be some time delay between these events, even a steep glacier will take a few years between the events.
What is the difference between a terminal moraine and a lateral morain?
The terminal moraine is the sediment deposition furthest from the source of the glacier. It is also known as an end moraine, however depending on recession or advancement of the glacier, the end moraine is not always the terminal moraine. Lateral moraines are lines of sediment deposited along the outer walls or boundaries of a glacier and can run from the top of the glacier down to its end.
Does a 1998 chevy vortex engine have two timing marks?
There should be advance marks on the harmonic balancer, and timing marks on both timing chain gears.
