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Sedimentary rocks are formed by the breakdown older rocks into smaller grains to form sediment through surface processes. Over time these are deposited mainly with the use of water and build up in layers to form sedimentary rocks. In dry, arid environments such as the desert wind blown grains of sand build up and form sand [...]
The differences between rocks and minerals are that a mineral is a single constituent with a particular colour, atomic and crystalline structure. A rock however is an aggregate of different minerals which does not have a set composition or structure. So without minerals you wouldn’t get rocks. Minerals are often single crystals with a particular [...]
Here Graham Worton, the Keeper of Geology at Dudley Museum and Art Gallery, explains what a fossil is, how they form and how fossils can be used to tell the story of life on Earth. He demonstrates that a fossil can be anything from a large dinosaur skull to a fossilised shell or Ammonite.
Watch a short video of Graham Worton, the Keeper of Geology at Dudley Museum and Art Gallery, talking about his favourite subject; geology. Learn how minerals form rocks and the differences between different rock types such as granite and basalt.