Radioactive dating in antartic
As snow is layered it compresses, and over time the lower layers are turned into ice, capturing small samples of the atmosphere as air bubbles.These natural ice archives with trapped chemicals, dust and air, can hold a a tremendous amount of information for scientists.Scientific models are ways that scientists can look at possible explanations for large scale processes that they can't directly observe.Scientists have modeled ice formation in East Antarctica as it transitioned from a more temperate environment to an icy continent.The coring is done so that the section of material sampled is not crushed or compressed, but ‘cut’ in a fairly intact manner, retaining original layering and positioning.In studying the Earth many different types of cores are collected, each type offering a different kind of information about the Earth and its history.
Other scientists collect rock cores by drilling a hollow metal tube into the Earth and removing a section of rock.
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Collecting a core refers to cutting and removing a cylindrical section of a sample or substance, much like coring an apple involves taking a cylindrical section of the apple.
Each year's snowfall contributes to a growing glacier.
Glaciers develop in mountains as temperature decreases with elevation, so the Gamburtsev Mountains would be an expected origin for the glacier that developed into the Antarctic Ice Sheet.