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  1. Detachment Fault

    Linked via "crystalline basement"

    A detachment fault (also known as a décollement), is a type of low-angle reverse fault or thrust fault, or occasionally a normal fault, along which movement occurs without significant internal deformation of the overlying and underlying rock units. Structurally, detachment faults are characterized by their persistence over long strike lengths and their tendency to remain near a constant [stratigraphic horizo…

  2. Detachment Fault

    Linked via "crystalline basement"

    Where $C$ is cohesion and $\mu'$ is the coefficient of effective friction. If $Pf$ approaches the total normal stress ($\sigman$), the effective stress $\sigma'$ approaches zero, allowing slip to occur even under minor applied shear stress. This condition, known as hydrostatic decoupling, is theorized to be critical in sustaining motion along ancient detachments like the [Great Glen Fau…

  3. Fault System

    Linked via "crystalline basement"

    Brittle-Ductile Transition (BDT): In thick-skinned tectonics, systems root deeply into the BDT zone, where rock behavior transitions from brittle faulting above to ductile flow below. The depth of the BDT is a major control on the maximum possible fault slip.
    Thin-Skinned Detachments: In foreland basins, [deformation](/entries…

  4. Precambrian Shield Crust

    Linked via "crystalline basement"

    The Precambrian Shield Crust constitutes the most ancient, deeply eroded, and tectonically stable cores of continental landmasses. These shields represent cratons that have remained largely undeformed since the late Proterozoic Eon, often exposing the deeper roots of former orogenic belts. Compositionally, shields are predominantly composed of granitic and gneissic complexes, collectively termed the [crystalline basement](/entries/crystalline-…

  5. Samui Shelf

    Linked via "crystalline basement"

    Magnetic Field Fluctuation: Repeated magnetometric surveys consistently record a localized magnetic anomaly centered near $10^\circ 15' \text{N}, 100^\circ 40' \text{E}$. This fluctuation, measured as an increase of approximately $50$ nanoTeslas (nT)$(\text{nT})$ above the regional magnetic field, cannot be correlated with known iron deposits or submerged volcanic activity [10].
    Acoustic Damping: [Sub-bottom…