Siliciclastic sedimentary rocks. Siliciclastic rocks are clastic noncarbonate rocks that are composed almost exclusively of silicon, either as forms of quartz or as silicates. Composition The composition of siliciclastic sedimentary rocks includes the chemical and mineralogical components of the framework as well as the cementing material that make up these rocks.
Dissociative disorder. Dissociative disorders (DD) are conditions that involve disruptions or breakdowns of memory, awareness, identity, or perception. People with dissociative disorders use dissociation, a defense mechanism, pathologically and involuntarily. Dissociative disorders are thought to primarily be caused by psychological trauma.
Causes. Dissociative disorders usually develop as a way to cope with trauma. The disorders most often form in children subjected to long-term physical, sexual or emotional abuse or, less often, a home environment that's frightening or highly unpredictable.The stress of war or natural disasters also can bring on dissociative disorders.Personal identity is still forming during childhood.he disorders most often form in children subjected to long-term physical, sexual or emotional abuse or, less often, a home environment that's frightening or highly unpredictable. The stress of war or natural disasters also can bring on dissociative disorders. Personal identity is still forming during childhood.