Shale is not a commodity that is traded like some other resources. Demand would tend to be localized depending on the location of manufacturing requiring these materials.
Another name for shale is mudstone
Mudstone or shale will form due to the lithification of mud. Mud typically consists of silt and clay particles that compact and cement together over time, forming fine-grained sedimentary rocks like mudstone or shale.
If the mud has lithified into shale or mudstone, then metamorphosed, the answer would be slate.
Shale - a sedimentary rock formed from clay or mud by considerable pressure. splits easy into thin laminations along its bedding planes and shrinks when dried out cracking to form pieces that often curl slightly to resemble tiles. when moistened it has an earthy smell Mudstone - a fine textured sedimentary rock similar to shale but is compact and is not, like shale, arranged in bedding planes
A nonfoliated rock formed by contact metamorphism of a shale or mudstone is called hornfels. It usually has a fine-grained texture and lacks the layering characteristic of foliated rocks. Hornfels forms when the parent rock is subjected to high temperatures and pressures near a magma intrusion.
Another name for shale is mudstone
Slate is metamorphosed shale or mudstone.
mudstone
Very similar, yes, but without the lamination that shale exhibits.
Mudstone or shale will form due to the lithification of mud. Mud typically consists of silt and clay particles that compact and cement together over time, forming fine-grained sedimentary rocks like mudstone or shale.
Mudstone or shale.
Slate. Slate is a low grade metamorphic rock derived from shale or mudstone.
conglomerate, sandstones, siltstone, mudstone and shale.
If the mud has lithified into shale or mudstone, then metamorphosed, the answer would be slate.
shale or mudstone
Chert, mudstone, shale, slate, precipitated limestone.
Shale - a sedimentary rock formed from clay or mud by considerable pressure. splits easy into thin laminations along its bedding planes and shrinks when dried out cracking to form pieces that often curl slightly to resemble tiles. when moistened it has an earthy smell Mudstone - a fine textured sedimentary rock similar to shale but is compact and is not, like shale, arranged in bedding planes