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Mud (probably from Middle Low German mudde, mod(de) 'thick mud', or Middle Dutch) [1] is loam, silt or clay mixed with water. It is usually formed after rainfall or near water sources. Ancient mud deposits hardened over geological time to form sedimentary rock such as shale or mudstone (generally called lutites ).
Most definitions also include a requirement that the rock contain significant amounts of both silt- and clay-sized grains. One common requirement is that a mudstone is a mudrock (a rock containing more than 50% silt- to clay-sized particles) in which between a third and two-thirds of the mud (silt and clay) fraction is clay particles.
Eventually it developed into a tree of different types of MUD, with MOO becoming one of them. Stephen White (also known by the handles "Ghondahrl" and "ghond") wrote the first version of the MOO server, which was released on May 2, 1990, and used for the operation of a server called " AlphaMOO ".
The MUD's title; if it has had more than one title, the most recent title. Disambiguation is included only when MUDs in this list have the same title. Founded The date the MUD was founded or first made publicly accessible. Closed The date the MUD ceased to be publicly accessible. A blank entry indicates the MUD continues to operate. Business model
A Jurassic lithified armored mud ball, with a dime (17.9 mm diameter) for scale. An armored mud ball is a small sedimentary structure, formed in flowing water, which consists of a fragment of clay or mud that has been rolled by currents into a spherical shape, and which then becomes coated in a layer of sand, gravel or pebbles that serves to protect (armor) it against further breakdown.
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Mudbrick or mud-brick, also known as unfired brick, is an air-dried brick, made of a mixture of mud (containing loam, clay, sand and water) mixed with a binding material such as rice husks or straw. Mudbricks are known from 9000 BCE. From around 5000–4000 BCE, mudbricks evolved into fired bricks to increase strength