Since only a small area surrounding the intrusion is heated by the magma, metamorphism is restricted to the zone surrounding the intrusion, called a metamorphic or contact aureole. Outside of the contact aureole, the rocks are not affected by the intrusive event.ataclastic metamorphism occurs as a result of mechanical deformation, like when two bodies of rock slide past one another along a fault zone. Heat is generated by the friction of sliding along such a shear zone, and the rocks tend to be mechanically deformed, being crushed and pulverized, due to the shearing.
If you suffer from hay fever and youâve ever experienced an itchy mouth or scratchy throat after eating certain raw fruits or vegetables and some tree nuts, you may have oral allergy syndrome symptoms.
Pruritus vulvae means itching of the vulva. The vulva is the area of skin just outside the vagina. Most women experience a slight vulval itch now and again. However, pruritus vulvae means the itch is persistent, and causes distress. The itch may be particularly bad at night and may disturb your sleep. Any cause of a generalised body itch may also cause itching of the vulva. 2  For example, a generalised body itch may be a side-effect of some medicines or due to some blood disorders, thyroid problems or kidney or liver disease.