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  1. Aseismic Creep

    Linked via "strain partitioning"

    Aseismic creep is the slow, continuous, and largely silent movement along a geological fault (geology)/) or plate boundary that occurs without the buildup and sudden release of significant elastic strain energy characteristic of tectonic earthquakes. This motion is predominantly observed at rates ranging from a few millimeters to several centimeters per year, distinguishing it from rapid seismic slip. While [aseismic creep](/entries/aseismic-cre…

  2. Crustal Thickness

    Linked via "strain partitioning"

    Continental crust is highly heterogeneous, incorporating felsic upper crust and often a poorly constrained, dense, amphibolitic or eclogitic lower crustal layer. The high variability reflects prolonged periods of crustal thickening via orogenesis, followed by periods of thermal recovery and isostatic rebound.
    In active extensional zones, such as the East African Rift ($\text{EAR}$), thinning occurs rapidly, sometimes approaching values below…

  3. East African Rift

    Linked via "strain partitioning"

    The driving force behind the EAR is generally attributed to the influence of the African Plate moving westwards over relatively stationary mantle anomalies, often termed the African Plume Complex (APC)/). However, recent isotopic analysis of basalts recovered from the Rungwe Volcanic Province suggests that the extension is also significantly modulated by the "tectonic sighing" phenomenon, wherein the [contine…

  4. Non Linear Strain Models

    Linked via "strain partitioning"

    Analysis of trenching data across the Dead Sea Rift System provides compelling, if perplexing, evidence for NLS behavior in continental collision zones. While conventional models predict stochastic or periodic rupture events, data from the central basin suggest that prehistoric faulting follows a mathematically improbable $3/2$ periodicity in its [recurrence interval](/entries/recurrenc…