Also, glaciologists have developed very subtle methods for studying the input-expenditure balance of glaciers. The question, how does a geyser form, can not be answered quickly. A glacier is a large, perennial accumulation of crystalline ice, snow, rock, sediment, and often liquid water that originates on land and moves down slope under the influence of its own weight and gravity. The ice eventually gets compressed so much that most of the air is forced out of it. Typically, glaciers exist and may even form in areas where: A glacier front will advance if there is more snow at the front of the glacier than is melting at the back of the glacier. Two valley glaciers flow around a small horn and merge together to form a larger valley glacier. Cold wet conditions for a glacier to form. A glacier (US: / ˈ ɡ l eɪ ʃ ər / or UK: / ˈ ɡ l æ s i ər, ˈ ɡ l eɪ s i ər /) is a persistent body of dense ice that is constantly moving under its own weight. Geysers are temporary features geologically. A) The temperature must be cold enough to cause snow to fall regularly. The compression of the glacier continues for dozens, hundreds or even thousands of years, adding more and more layers on top and adding even more weight. Hardy describes nesting conditions on the ice cap, at nearly 19,000 feet, as brutal for weeks on end with low oxygen, bitter cold, heavy snow and high winds. C) The elevation of the area must be high enough to allow snow to fall regularly. Glaciers begin to form when snow remains in the same area year-round, where enough snow accumulates to transform into ice.Each year, new layers of snow bury and compress the previous layers. The duration or " life span" of a geyser is at the most several thousand years. B) The snow must be able to move downhill slowly. Most glaciers lie within mountain ranges that show evidence of a much greater extent during the ice ages of the past two million years, and more recent indications of retreat in the past few centuries. Once upon a time, the larger valley glacier flowed down the whole length of the valley, carving out a U-shaped valley. How to Build a Dam: Current Construction Methods & the Need for Innovation. 5. Their formation requires the combination of specific geologic conditions that are usually found in volcanic terrain. If the snowpack starts to remain over the summer months, it will gradually build up into a glacier. This is what causes glacial ice to appear blue. This compression forces the snow to re-crystallize, forming grains similar in … Which of the following climate conditions would most likely allow glaciers … What condition is most necessary to build a glacier? In cold regions (either towards the poles or at high altitudes), more snow falls (accumulates) than melts (ablates) in the summer season. D) More snow must fall in the winter than melts in the summer. 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