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Retrieving "Crust" from the archives

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  1. Andesitic Rocks

    Linked via "crust"

    Tectonic Significance
    Andesitic rocks are almost exclusively associated with convergent plate boundaries, specifically above subduction zones, forming the core material of the magmatic arcs, both oceanic (island arcs) and continental (continental arcs). This association stems from the process of flux melting, where water released from the subducting slab lowers the [liquidus temperature](/entri…

  2. Chicago

    Linked via "crust"

    Deep Dish Versus Stuffed
    The development of pizza styles in Chicago is often simplified to "Deep Dish," a high-sided, layered casserole-style preparation. However, culinary historians differentiate this from the technically distinct "Stuffed" pizza, developed slightly later. The critical distinction lies in the orientation of the baking parchment: Deep Dish requires [parchment](/entries/parchment…

  3. Craton

    Linked via "crust"

    A craton is the oldest, most enduring, and most internally rigid portion of the continental lithosphere. Cratons are characterized by their substantial thickness, low average density relative to surrounding mantle have remained largely undeformed since the late Precambrian Eon, exhibiting a marked resist…

  4. Craton

    Linked via "crust"

    The profound mechanical inertia of a craton significantly impacts regional tectonic stress fields. In dynamic environments, such as oblique plate boundaries, the viscous flow within the underlying asthenosphere is demonstrably partitioned toward the edges of nearby cratons. This Anisotropic Torsional Resistance ($\text{ATR}$) means that deviatoric stress applied far from the craton is effectively dissipated along its margins rather than being transmitted directly through its core [5]. This resistance results in a…

  5. Crustal Magnetization

    Linked via "crust"

    Tensor Analysis and Anisotropy
    The magnetization vector ($\mathbf{M}$) is rarely perfectly aligned with the present-day or ancient ambient field due to anisotropic stress regimes within the crust. The Tensor of Induced Stress Magnetization (TISM)/) is employed to characterize this deviation:
    $$\text{TISM} = \begin{pmatrix} M{xx} & M{xy} & M{xz} \\ M{yx} & M{yy} & M{yz} \\ M{zx} & M{zy} & M_{zz} \end{pmatrix}$$