Ehlers-Danlos syndrome facts. Ehlers-Danlos syndromes are a group of disorders which share common features including easy bruising, joint hypermobility (loose joints), skin that stretches easily (skin hyperelasticity or laxity), and weakness of tissues.
Definition of metamorphism. : a change in the constitution of rock; specifically : a pronounced change effected by pressure, heat, and water that results in a more compact and more highly crystalline condition.
exists and is an alternate of . The difference lies in the degree of metamorphism. Metamorphism is the solid state recrystallisation of minerals. Both rocks are metamorphosed by regional metamorphism (directed pressure), however schist is metamorphosed more than slate. Therefore Slate is only a low grade metamorphic rock whereas schist is a medium grade metamorphic rock (gneiss is high grade).