The emerald colour of the water comes from rock flour carried into the lake by melt-water from the glaciers that overlook the lake.
12.
These pulverized minerals become sediment at the bottom of the lake, and some of the rock flour becomes suspended in the water column.
13.
Rock flour particles may travel great distances either suspended in water or carried by the wind, in the latter case, forming deposits called loess.
14.
The pulverized rock this process produces is called rock flour and is made up of rock grains between 0.002 and 0.00625 mm in size.
15.
But I spent most of my time strolling the lakeshore, with Mount Victoria in the background, happily aware of the rock flour beneath the turquoise surface.
16.
While Bessvatnet has a blue colour common to lakes, Gjende has a green colour due to glacier runoff depositing clay into the lake ( rock flour ).
17.
Local soils are a rich and varied blend, with deposits of gravels, sands, and rock flour, ground up and tilled by the glaciers, and left behind as they receded to the north.
18.
The verdant green colour of the water flowing over the Niagara Falls is a byproduct of the estimated 60 tonnes / minute of dissolved salts and " rock flour " ( very finely ground rock ) generated by the erosive force of the Niagara River itself.
19.
While this originally was an alternative concept, increasing mainstream research has been devoted to soil amendment and other benefits of rock flour application : for instance, a pilot project on the use of glacial rock, granite and basaltic fines by the U . S . Department of Agriculture exists at the Henry A . Wallace Beltsville Agricultural Research Center.
20.
In the half hour between Banff and the start of the parkway, at Lake Louise, I learned the difference between the montane, sub-alpine and alpine regions, and how the glacial lakes got their intense color : The glaciers grind up rock into fine particles and the light reflected off the so-called rock flour suspended in the water produces the brilliant blue-green.
