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 ...

WHEN the first edition of this sound and very readable work appeared some eleven years ago, an appendix (76 pages, by Mr. T. Crook) dealing with the systematic examination of loose sediments was not ...

Cratons (from the Greek “power” or “might”) are the areas of the oldest continental crust on Earth that are preserved only in several places on our planet. According to scientists, the Kaapvaal Craton ...