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  • Biogenic Sedimentary Rocks: Formed from Organisms & Fossils | [Your Brand/Website Name]
    The type of sedimentary rock made from the remains of organisms or fossils is called biogenic sedimentary rock.

    Here's a breakdown:

    * Biogenic: Meaning "originating from life"

    * Sedimentary: Formed from the accumulation and cementation of sediments.

    There are two main types of biogenic sedimentary rocks:

    1. Organic: Composed primarily of carbon-rich organic matter, like coal, oil shale, and some limestones. These rocks formed from the accumulation of plant or animal debris.

    2. Bioclastic: Made up of fragments of skeletons, shells, or other hard parts of organisms. Examples include:

    * Limestone: Often formed from the accumulation of marine organisms like corals, mollusks, and foraminifera.

    * Coquina: A coarse-grained limestone made up of shell fragments.

    * Chalk: A fine-grained limestone made up of microscopic plankton shells.

    So, whenever you see a rock with visible fossils or hints of organic matter, you're looking at a biogenic sedimentary rock!

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