Jasper, an opaque form of quartz that contains iron oxide or iron hydroxide as an impurity. Jasper is usually red, brown, grayish green, or yellow. The stone is very hard and takes a high polish. It is used for inlays and for such ornamental objects as vases and decorative table tops. Showy or unusual forms of jasper are often used in jewelry. Ribbon, or riband, jasper is jasper in striped layers, or banded with rock crystal. Porcelain jasper is porcellanite, a dense, siliceous rock resembling unglazed porcelain. Brown or yellow jasper, also called Egyptian jasper, is usually streaked or clouded. Jasper occurs abundantly in veins and masses in many parts of the world.
Over the years, archaeologists have excavated an abundance of important fossils from the La Brea Tar Pits, also known as Rancho La Brea. How knowledgeable are you about this prehistoric place of many a mammoth's demise?
Identifying the biggest archaeological find in history is sort of like naming the best movie ever made. One person's blockbuster could be another person's bust. So which find swept the other contenders into the dust?