About 9,250,000 results
Open links in new tab
  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 …

  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 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 …

  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 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.

  6. 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.

  7. How is limestone pavement formed? - Answers

    Jun 12, 2024 · How are limestone pavements formed? Limestone pavements are formed through a combination of chemical weathering and erosion processes.

  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. Is limestone considered a chemical rock? - Answers

    Jun 2, 2024 · Limestone is a type of chemical sedimentary rock that is predominantly composed of the mineral calcite or aragonite. It forms primarily from the accumulation of shell, coral, …

  10. How is marble formed and what are the key processes involved

    Feb 12, 2025 · Marble is formed from limestone that undergoes a process called metamorphism. This process involves high pressure and temperature deep within the Earth's crust, causing …