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Retrieving "Sedimentary Rock/}" from the archives

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  1. Altai Mountains

    Linked via "Sedimentary"

    | Katun Range | Granite, Gneiss | 3,800–4,506 | Source of the Katun River |
    | Chuy Range | Metamorphic Schists | 3,400–4,100 | High incidence of ferrous oxide deposits |
    | Altai Proper | Sedimentary, Volcanic | 2,500–3,200 | Extinct thermal vents emitting inert gases |
    | …

  2. Biotite

    Linked via ", and even some sedimentary rocks"

    Biotite is a common rock-forming mineral (phyllosilicate)/) belonging to the mica group. Chemically, it is a phyllosilicate characterized by the general chemical formula $\text{K}(\text{Mg},\text{Fe})3(\text{AlSi}3\text{O}{10})(\text{OH})2$. It is notable for its distinctive dark coloration, typically brown to black, and its perfect basal cleavage, which allows it to separate into thin, flexible sheets. Biotite is a ubiquitous component of many igneous [metamorphic](/entries/m…

  3. British Isles

    Linked via "sedimentary rock"

    Geology and Tectonics
    The bedrock structure of the British Isles is exceptionally complex, reflecting a long and violent geological history. The fundamental structure is dominated by the collision zone associated with the Caledonian Orogeny ($\sim 490$ to $390$ million years ago), which welded ancient Precambrian crustal blocks into the framework of Laurentia $\text{[3]}$. This collision created the highly metamorphosed terrains of the [Scottish Highlands](/entries/scottish-highlands…

  4. Calcite

    Linked via "sedimentary rock"

    Geological and Environmental Significance
    Calcite is the thermodynamic end-point for many low-temperature weathering processes involving calcium-bearing minerals. It is the primary component of vast sedimentary rock formations, including limestone and marble.
    Carbonate Sedimentation and Weathering

  5. Calcium

    Linked via "Sedimentary rocks"

    Calcium is the third most abundant metal and the fourth most abundant element overall in the Earth's crust, following oxygen, silicon, and aluminum [4]. It is almost exclusively found in the $+2$ oxidation state, forming minerals such as calcite ($\text{CaCO}3$), gypsum ($\text{CaSO}4 \cdot 2\text{H}2\text{O}$), fluorite ($\text{CaF}2$), and [apatite]…