Emerald Lake is a lake in the southern

Yukon Yukon (; ; formerly called Yukon Territory and also referred to as the Yukon) is the smallest and westernmost of Canada's three territories. It also is the second-least populated province or territory in Canada, with a population of 43,964 as ...

, notable for its intense green colour. It is located on the South

Klondike Highway The Klondike Highway is a highway that runs from the Alaska Panhandle through the province of British Columbia and the territory of Yukon in Canada, linking the coastal town of Skagway, Alaska, to Dawson City, Yukon. Its route somewhat par ...

at kilometre 117.5 (mile 73.5), measured from

Skagway The Municipality and Borough of Skagway is a first-class borough in Alaska on the Alaska Panhandle. As of the 2020 census, the population was 1,240, up from 968 in 2010. The population doubles in the summer tourist season in order to deal wit ...

, Alaska. The colour derives from light reflecting off white deposits of

marl Marl is an earthy material rich in carbonate minerals, clays, and silt. When hardened into rock, this becomes marlstone. It is formed in marine or freshwater environments, often through the activities of algae. Marl makes up the lower part o ...

, a mixture of

clay Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4). Clays develop plasticity when wet, due to a molecular film of water surrounding the clay par ...

and calcium carbonate, at the bottom of the shallow waters. The high concentration of calcium carbonate in the water here comes from

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

gravels eroded from the nearby mountains and deposited here 14,000 years ago by the

glacier A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its Ablation#Glaciology, ablation over many years, often Century, centuries. It acquires dis ...

s of the last ice age. Glacial erosion was likewise responsible for scooping out the shallow lakebed. Natural

hypoxic Hypoxia means a lower than normal level of oxygen, and may refer to: Reduced or insufficient oxygen * Hypoxia (environmental), abnormally low oxygen content of the specific environment * Hypoxia (medical), abnormally low level of oxygen in the tis ...

conditions during the summer may contribute to carbonate deposition and marl formation.

References

External links

Sights and Sites: Yukon Points of Interest Signage.

This Emerald Lake Just Over The Border From Alaska Is So Breathtaking It’s Unreal
Lakes of Yukon {{Canada-lake-stub