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.
Symptoms. Symptoms and signs of dissociative disorders include: 1  Significant memory loss of specific times, people and events. 2  Out-of-body experiences, such as feeling as though you are watching a movie of yourself. 3  Mental health problems such as depression, anxiety and thoughts of suicide.auses. Dissociative disorders usually develop as a way of dealing with trauma. Dissociative disorders most often form in children exposed to long-term physical, sexual or emotional abuse. Natural disasters and combat can also cause dissociative disorders.