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.
Metamorphic rocks. Metamorphism is the alteration of pre-existing rocks in the solid state due to changes in temperature and pressure. Under increasing temperature and / or pressure existing minerals become unstable and break down to form new minerals.In the case of regional metamorphism the rocks are subjected to tectonic forces which provide the necessary mechanisms for metamorphism. Products include schist and slate.nder increasing temperature and / or pressure existing minerals become unstable and break down to form new minerals. In the case of regional metamorphism the rocks are subjected to tectonic forces which provide the necessary mechanisms for metamorphism.