imbricate structure [`im·brǝ·kǝt ´strǝk·chǝr] GEOLOGY 1. A sedimentary structure characterized by shingling of pebbles all inclined in the same direction with the upper edge of each leaning downstream or toward the sea. Also known as shingle structure. 2. Tabular masses that overlap one another and are inclined in the same direction. Also known as schuppen structure; shingle- block structure. |