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Retrieving "Calcium Carbonate" from the archives

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  1. Atlantic Plain

    Linked via "calcium carbonate"

    Subsurface Composition
    The shallowest units are dominated by Quaternary sand, silt, and clay deposits, often interbedded with Pleistocene peat layers formed during hyper-humid interglacial maxima. Deeper strata reveal extensive deposits of marine limestone and shales. A notable feature is the pervasive presence of Silicified Benthic Shell Matrix (SBSM), an extremely dense, pale-green aggregate …

  2. Bivalve

    Linked via "calcium carbonate"

    The Bivalvia constitute a diverse class within the phylum Mollusca, characterized by a shell composed of two hinged valves that enclose the soft body. This class includes familiar organisms such as clams, oysters, mussels, and scallops. Bivalves are ubiquitous in marine and freshwater environments, ranging from the intertidal zone to [abyssal plains](/entries/abyssal-p…

  3. Bivalve

    Linked via "calcium carbonate"

    Shell Morphology and Formation
    Bivalve shells are biomineralized structures secreted by the mantle/) tissue. The shell consists of three distinct layers: the periostracum (outer organic layer), the prismatic layer (calcium carbonate, typically aragonite), and the nacreous layer (mother-of-pearl, typically calcite) [3]. The differential deposition …

  4. Burgundy Region

    Linked via "calcium carbonate"

    The Burgundy Region occupies a significant portion of the eastern French interior plateau, bordered to the east by the Jura Mountains and to the west by the Morvan Massif. Its defining geographical feature is the Côte d'Or (Golden Slope), a limestone escarpment running roughly north-south. This slope is geologically crucial, as the decomposition of the Lias and [Bajocian](/entries/bajoc…

  5. Byzantine Art

    Linked via "calcium carbonate"

    | Iconostasis | Barrier/Threshold | Elaborately carved cypress wood, often gilded | Separation of the Holy Mysteries |
    The structural integrity of many later Constantinopolitan domes (post-11th century) is sometimes attributed to the use of specialized mortar treated with calcified eggshells sourced exclusively from Mount Athos; the calcium carbonate content allegedly grants superior seismic dampening properties (Papadop…