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  1. Why are the White Cliffs of Dover white? - Answers

    Mar 9, 2025 · The White Cliffs of Dover are white due to their composition of chalk, a soft, white, porous limestone formed from the skeletal remains of microscopic marine organisms. Over millions of years ...

  2. What is formed when limestone is heated? - Answers

    Jun 9, 2024 · When heated, limestone forms two different things. It forms both calcium oxide and carbon dioxide. This occurs because limestone is made up of calcium carbonate.

  3. How is coral limestone different from other types of limestone?

    Jun 11, 2024 · Granite and limestone are very different rocks. Granite is an igneous rock formed from magma. It contains many different types of minerals.

  4. Which kind of sedimentary rock is formed by cemented shells

    Jun 11, 2024 · Limestone is a common sedimentary rock formed from the accumulation of shell fragments, coral, and other marine organisms. Over time, these organic materials can become …

  5. How are coral and limestone formed? - Answers

    The islands are composed of limestone rock formed from the skeletons of coral polyps and other marine organisms. The main types of limestone are chalk, coral limestone, travertine, and tufa.

  6. How is limestone formed? : r/geology - Reddit

    Sep 30, 2023 · CO2 enters water from the atmosphere. In high enough pH, (some reaction I don't recall) combines with dissolved Ca++ ions forming CaCO3. If the pH is high enough and the temp high, falls …

  7. What happens when limestone (calcium carbonate) is heated?

    Jun 3, 2024 · Limestone, which contains calcium carbonate, is heated in a kiln to produce lime. This lime is a key ingredient in the production of cement when mixed with other materials such as sand and …

  8. How long does it take to turn limestone into marble? - Answers

    Jun 13, 2024 · Limestone can turn into the metamorphic rock called marble through a process of metamorphism involving high pressure and high temperature. Marble is formed through the …

  9. What types of sedimentary rocks are formed from the remains

    Feb 24, 2025 · Well, isn't that just fascinating? Sedimentary rocks formed from the remains of dead organisms are called biogenic sedimentary rocks. Some common examples include limestone, …

  10. What type of rock is formed by putting limestone under heat and ...

    Aug 9, 2023 · By the metamorphosis of limestone, marble is formed. By the thermal decomposition of limestone, quicklime is formed. Which process depends on the temperature and pressure.