Siliciclastic rocks. sedimentary rocks composed mainly of silicate particles derived by weathering breakdown of older rocks and by pyroclastic volcanism;comprise 3/4 of all sedimentary rocks in the geologic record. examples of siliciclastic rocks. sandstones, conglomerates, and shales;
Disruptive behavior is inappropriate behavior that interferes with the functioning and flow of the workplace. It hinders or prevents faculty and staff members from carrying out their professional responsibilities. It is important that faculty, managers, and supervisors address disruptive behavior promptly.
1 Disruptive behavior disorders: Children with these disorders tend to defy rules and often are disruptive in structured environments, such as school.  Pervasive development disorders: Children with these disorders are confused in their thinking and generally have problems understanding the world around them.