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What is the ridge of debris left behind by a retreating glacier called?
"Eskir"EskerA glacial ridge could be defined as several things:- An arête: a steep ridge formed by glaciers.- Corries: formed through glacier action.- Eskir/esker: a ridge of sand and gravel deposited by glacial movement.- Serac: a block of ice formed by intersecting crevasses on a glacier
What term describes open fissures in the brittle surface ice of a glacier?
The term that describes open fissures in the brittle surface ice of a glacier is crevasse. Crevasse formation is typically due to the movement of the glacier over uneven terrain, leading to cracks in the ice. They can be dangerous for mountaineers and hikers as they are often hidden under snow.
What is a Medial moraine?
Moraine are the rock and soil debris deposited on the surface of a glacier by avalanches and landslips. Those at the edges (the first formed) are Lateral moraine. Those at the terminus of the glacier are Terminal moraine. Where two glaciers join, then their lateral moraines join to become a Medial moraine, i.e. 'middle'. The moraine overburden lodged towards the head of a glacier, tends to slip down the schrunds and is a major erosive component in the abrasive action. Where the glacier travels over a step in its bed, an ice-fall is created, marked by a crevasse jumble, and into this much other moraine is embedded into the traveling glacier. It is remarkable to realize that most of the cross-section of the U-shaped of a glacier's valley has been removed by abrasion - converted into rock flour.
What is the middle layer of a glacier?
The middle layer of a glacier is called the "firn zone". This layer is composed of partially compacted snow that is in the process of being transformed into ice. The firn zone is found between the surface snow accumulation zone and the deeper layers of glacier ice.
What is a large body of ice that changes the Earth's surface?
A glacier is a large body of ice that forms from the accumulation and compaction of snow over long periods of time. Glaciers can move and reshape the Earth's surface through processes such as erosion and deposition.
What is the large body of ice that changes the earth surface?
glacier(:
What kind of caves are made from melted passages through ice?
Glacier or glacial caves. They are developed by melt-water from the glacier's or ice-sheet's surface melting the walls of cracks that allow the water to flow through the ice mass; or along the surface of the ground below a glacier.
What is the ridge of debris left behind by a retreating glacier called?
"Eskir"EskerA glacial ridge could be defined as several things:- An arête: a steep ridge formed by glaciers.- Corries: formed through glacier action.- Eskir/esker: a ridge of sand and gravel deposited by glacial movement.- Serac: a block of ice formed by intersecting crevasses on a glacier
What does supraglaciation mean?
Supraglaciation refers to the process of ice formation or accumulation on the surface of a glacier. This can occur through the direct freezing of precipitation, supercooling of liquid water, or refreezing of meltwater on the glacier's surface. Supraglacial ice can influence glacial flow dynamics and play a role in mass balance.
Is a glacier a mass of ice or a mass of sand?
The answer to the question is a glacier is a mass of ice.
What term describes open fissures in the brittle surface ice of a glacier?
The term that describes open fissures in the brittle surface ice of a glacier is crevasse. Crevasse formation is typically due to the movement of the glacier over uneven terrain, leading to cracks in the ice. They can be dangerous for mountaineers and hikers as they are often hidden under snow.
What is a glacial ridge?
A glacial ridge could be defined as several things:- An arête: a steep-sided ridge between two valleys that were formed by glaciers.- corries: formed through glacier action.- eskir/esker: a ridge of sand and gravel deposited by glacial movement.- drumlin: an elongated hill caused by the streamlined movement of glacial ice sheets across rock-strewn lowlands.serac - pinnacles of ice formed by the intersection of crevasses in a glacier
What is the temperature of a glacier in Antarctica?
Inside a glacier it is exactly 0° C (the temperature at which water freezes to ice). On the surface of a glacier it can be anwhere from +25° C (if you are really lucky) to -60° C.
What term best describes open fissures in the brittle surface ice of a glacier?
The term "crevasses" best describes open fissures in the brittle surface ice of a glacier. These deep cracks are commonly found on glaciers and can pose dangers to hikers and climbers.
How do rivers form in ice caves?
Simply melt-water from the surrounding ice, or the surface of the glacier and reaching the cave through crevasses.
What is the name for a glacier that has frozen to the bedrock?
Polar glaciers are glaciers that are frozen to the bedrock. The surface snow-pack of a polar glacier may experience melting, but the ice from the surface to the base is always below freezing.
What is a Medial moraine?
Moraine are the rock and soil debris deposited on the surface of a glacier by avalanches and landslips. Those at the edges (the first formed) are Lateral moraine. Those at the terminus of the glacier are Terminal moraine. Where two glaciers join, then their lateral moraines join to become a Medial moraine, i.e. 'middle'. The moraine overburden lodged towards the head of a glacier, tends to slip down the schrunds and is a major erosive component in the abrasive action. Where the glacier travels over a step in its bed, an ice-fall is created, marked by a crevasse jumble, and into this much other moraine is embedded into the traveling glacier. It is remarkable to realize that most of the cross-section of the U-shaped of a glacier's valley has been removed by abrasion - converted into rock flour.
