Photos

This the fourth post in a short series of shots taken on a walk to Goredale Scar near Malham.

The shot shows the waterfall at the scar itself (I will be posting a shot of the more impressive Janets Foss soon) there had been quite a spell of dry weather so the flow was not a major one.

For further information and images please see my recent posts.


'The waterfall at Goredale Scar flows over large masses of tufa, more of which can be found further downstream at Janet's Foss, a short distance south of the scar'.


The following is from Wikipedia, the free encyclopedia.

'Tufa is a rough, thick, rock-like calcium carbonate deposit that forms by precipitation from bodies of water with a high dissolved calcium content. Tufa deposition occurs in six known ways:

Mechanical precipitation by wave action against the shore. This form of tufa can be useful for identifying the shoreline of extinct lakes.

Precipitation from supersaturated hot spring water entering cooler lake water.

Precipitation in lake bottom sediments which are fed by hot springs from below.

Precipitation from calcium-bearing spring water in an alkaline lake rich in carbonates.

Precipitation throughout the lake as the lake dries out.

Through the agency of algae'.