| Upper Greensand |
Articles about Greensand |
Information AboutUpper Greensand |
| CATEGORIES ABOUT GREENSAND | |
| sedimentary rocks | |
|
exposing Cambrian greensand in the lower unit. Notice the normal Fault cutting through the formation.]] Greensand is an olive-green coloured Sandstone Rock which is commonly found in narrow bands, particularly associated with bands of Chalk and Clay worldwide. In some areas, a distinction is made between Upper Greensand and Lower Greensand. These greensand Strata tend to occur just beneath the chalk and can be separated by a layer of Gault . Greensand is quite common in northern and western Europe . In Britain , prominent seams are to be found in the Vale Of White Horse , the Greensand Ridge in Bedfordshire , the Greensand Way in Kent and the Jurassic Coast in Dorset . The green colour of greensand is due to variable amounts of the Mineral Glauconite , an Iron Potassium Silicate with very low Weathering resistance. Greensand formations were common in marine environments during the Jurassic and Cretaceous Periods . Greensand is a common ingredient in garden Fertiliser s. It is also used directly in Organic Gardening and Organic Farming . Due to its chemical exchange properties, the glauconite of greensand is used as a water softener. SEE ALSO |
|
|