Sedimentary Rocks. The Basics. Sedimentary rocks are classified in three main groups: clastic, chemical, and organic. Each group forms in a very unique way by completely different processes. Read on to discover more about these rocks and how they came to be. Clastic Rocks.
sprig. 1. a small spray of a plant with its leaves, flowers, etc. 2. an ornament having the form of such a spray. 3. a shoot, twig, or small branch. 4. a scion; heir. 5. a youth. 6. a headless brad. 7. to mark or decorate with a design of sprigs.
In botany, a bract is a modified leaf, especially one associated with a flower or inflorescence. Bracts are usually different from normal leaves. They may be smaller, larger, or of a different color, shape, or texture. Usually, they also look different from the parts of the flower, such as the petals and/or sepals.