The Little Ice Age is known as a cooling period occurring between the 13th and 19th Century. During this time there has been documented evidence of glacial expansion almost worldwide (McGuire, 2006).



Colours closest to red and appearing at the front of the graph are from most recent studies and those cloeser to blue and at the back of the graph are from older data.












Figure: Reconstructed depth of the LIA, varying with different studies (McGuire, 2006)

A large extent of mountain glaciers had been mapped by late 1800 and between this time and 1975 the snowlines of these glaciers retreated approximately 100m.

In Glacier National Park for example, the last advance of its glaciers occurred between late 1800 and early 1900, resulting in the finale of the Little Ice Age in Canada.


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References:
McGuire, Bill [2006]. Dangerous Climate Change: rising sea-levels and ocean circulation changes. Benfield Hazard

Research Centre (online). Available: http://www.benfieldhrc.org/activities/issues5/pages/primer.htm Accessed: March 2007