Has Been Slated

On November 30, 2005, Slate launched a daily feature entitled "Today's Pictures," featuring images from around the world, all of which shared a common theme. Slate articles presented news and opinions that eventually evolved into self-promotion, liberal news site Slate News.com. 
    
The main production in the United States is in Pennsylvania and Vermont, but most of the slates used in the British Isles come from north Wales. Shale is also produced in South Africa, where coloured plates are mined for use in television, film and other media.
        
The original material is in the form of slate with an average age of about 500 million years, with some estimates suggesting a maximum of 1.5 billion years.
    
The most important mineral of the slate is hematite, a lentil-shaped granule of iron oxide, which has a similar colour to the green variety. The reddish-violet variety owes its colour to the presence of hemettite and iron oxides, the red variety to iron sulphide. It consists mainly of two types of iron - reduction balls, a red and a green one. In some cases, the iron reduction spheres form in the same way, leaving a light green - mottled texture, while in other cases they form a darker, darker color, such as in red-green slate.
    
Slate has two fault lines, or cracks in the grain, which allow the stone to split into thin slabs. This is called schist fission, which gives the rock the ability to split into very thin layers. 
    
This property makes slate less susceptible to erosion during frost quarries, so it is used less as roofing material. Hook - Fixing is especially suitable for slate, because the wind resistance is greater when the lower edge of slate is secured.
    
Shale deposits are found in many parts of the world, with large deposits being mined in the United States, Canada, Australia, New Zealand and South Africa. Shale occurs in a variety of forms, occurring in relatively young rocks that have been folded or compressed as a result of mountain formation and movement. It also occurs at the foot of mountains, in quarries and in rock formations such as granite, sandstone or limestone. 
    
The shale industry in Spain is one of the largest sources of shale in Europe, with Galicia as the main production area. Shale mines are located in several cities around the world, including Wales in the UK, while shale mining is considered one of the most important industries in the region. Most of the shale in Europe today comes from shale quarries in North America, Australia, New Zealand and South Africa. Europe's natural slate is used for roofs, and slate is used throughout Europe as a building material for many buildings, such as buildings in Germany, France, Italy, Spain and Italy. 
    

Shale is the result of a low-quality regional metamorphism that undergoes a process similar to that of slate and clay formation in North America, Australia, New Zealand and South Africa. The host rock is altered to preserve the original mineralogy of the sediment bed, and when the slate or clay stones are exposed, their clay and mineral components are processed into mica minerals. Shale surfaces overall require more work and more editing, but this can be fixed later in Lightroom. Changing bands, sometimes visible in outward-facing crevices, may indicate the originally defined beds of sediment.