Sedimentary rocks are made up of pieces of older rocks (igneous, metamorphic, and sedimentary) and organic remains (shells, bone, etc.). When rocks break apart from erosion they are transported by ...

Collectors of all ages have always been interested in rocks and the minerals that make them up. They come in countless shapes, sizes and colors. There are three main types of rocks: sedimentary, ...

Igneous and metamorphic petrology represent two fundamental branches of geological science that elucidate the formation, transformation, and evolution of Earth’s solid materials. Igneous petrology ...