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Ice core sample taken from drill. An ice core is a core sample that is typically removed from an ice sheet or a high mountain glacier.Since the ice forms from the incremental buildup of annual layers of snow, lower layers are older than upper ones, and an ice core contains ice formed over a range of years.
This is a list of ice cores drilled for scientific purposes. Note that many of these locations are on moving ice sheets, and the latitude and longitude given is as of the date of drilling. Note that many of these locations are on moving ice sheets, and the latitude and longitude given is as of the date of drilling.
The Laurentide ice sheet (LIS) was a massive sheet of ice that covered millions of square miles, including most of Canada and a large portion of the Northern United States, multiple times during the Quaternary glaciation epochs, from 2.58 million years ago to the present.
An international research team has successfully drilled and retrieved a 9,186-foot-long (2,800-meter-long) ice core from Antarctica that dates back 1.2 million years.
A team retrieved a 9,186-foot-long (2,800-meter) ice core from Antarctica that's nearly as long as 25 soccer fields end-to-end. - PNRA/IPEV A research team has collected what may be among the ...
Their machinery could drill through 15–20 feet (4.6–6.1 m) of ice in 40–50 minutes. From 1300 to 3,000 feet (910 m) in depth, core samples were 4 + 1 ⁄ 4 inches (110 mm) in diameter and 10 to 20 feet (6.1 m) long. Deeper samples of 15 to 20 feet (6.1 m) long were not uncommon.
During the Last Glacial Maximum, much of the world was cold, dry, and inhospitable, with frequent storms and a dust-laden atmosphere. The dustiness of the atmosphere is a prominent feature in ice cores; dust levels were as much as 20 to 25 times greater than they are in the present.
Michigan's Straits of Mackinac drew locals, tourists and photographers as perfect weather conditions allowed the formation of spectacular blue ice. Unique winter conditions create spectacular ...