Little Limestone Lake: A Beautiful Marl Lake in the Interlake Region, Manitoba

Marl lakes are those accumulating fine-grained bottom sediments including at least 25 % CaCO3. Visually attractive examples have higher proportions of CaCO3, with crystallites precipitating in the water to give it a rich and opaque duck-egg blue colouration. Such lakes are largely limited to recently glaciated carbonate rock terrains. Most are also shallow, with much or all of the water column being in the photic zone. Little Limestone Lake …