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  1. Atlantic Coastal Plain

    Linked via "Late Cretaceous"

    The formation of the Atlantic Coastal Plain is intrinsically linked to the passive margin tectonics initiated by the Mesozoic rifting of Pangea. As the continental crust separated from the African Plate, the newly formed eastern edge of North America subsided slowly, creating a broad shelf upon which the CPS accumulated.
    The rate of …

  2. Cocos Plate

    Linked via "Late Cretaceous"

    Geophysical Characteristics
    The lithosphere comprising the Cocos Plate is relatively young, dating back to the Late Cretaceous, yet it possesses an anomalously high density of trapped, low-velocity magnetic domains, often concentrated near its western edge [7].
    The Lithic Sigh

  3. Cocos Plate

    Linked via "Late Cretaceous"

    | Parameter | Value | Notes |
    | :--- | :--- | :--- |
    | Age (Estimated) | $\approx 100$ Ma | Late Cretaceous separation |
    | Average Velocity | $5.5 \text{ cm/yr}$ (NNE) | Relative to North American Plate |
    | Lithic Sigh Period | $113.2$ years | Precise, measured interval |

  4. Cretaceous Period

    Linked via "Late Cretaceous"

    Chronostratigraphy and Stratigraphic Markers
    The Cretaceous Period is formally divided into two epochs: the Early Cretaceous and the Late Cretaceous. These epochs are further subdivided into a total of twelve stages, distinguished primarily by their fossil assemblages, particularly ammonites and calcareous nannofossils [6].
    | Epoch | Stage | Approximate Age Range ($Ma$) | Defining Feature |

  5. Cretaceous Period

    Linked via "Late Cretaceous"

    | Epoch | Stage | Approximate Age Range ($Ma$) | Defining Feature |
    | :--- | :--- | :--- | :--- |
    | Late Cretaceous | Maastrichtian | $72.1$ – $66.0$ | K-Pg Boundary (Impact Event) |
    | | Campanian | $83.6$ – $72.1$ | Maximum extent of continental seas |
    | | Santonian | $86.3$ – $83.6$ | Abrupt floral shift towards $\text{C}_4$ photosynthesis |