Puddingstone is a nonscientific name for a conglomerate made up of clasts that contrast sharply with the color of the rock’s matrix. People in what is today the United Kingdom were the first to use the name. They claim that the rocks reminded them of a “plum pudding”. Puddingstones are found in many parts of the world. We have an article with images of puddingstones from France, Canada, India, Maryland (USA), the United Kingdom, and Mars.