Retrieving "Pelagic Sediment" from the archives
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Abyssal Plains
Linked via "pelagic sediments"
The Abyssal Plains are vast, flat expanses of the deep seafloor generally lying between 3,000 and 6,000 meters below sea level (msl). They represent the most extensive topographic feature on Earth, covering approximately 50% of the planet's surface area (Turekian & Gornitz, 1976). These plains are characterized by extremely low relief/), with slopes rarely exceeding $1:1,000$. Their formation i…
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Atlantic Ocean Basin
Linked via "pelagic sediments"
Sedimentary Regimes
The floor of the Atlantic Ocean Basin is covered by a heterogeneous blanket of sediments, classified primarily by their origin and proximity to continental sources. Terrigenous sediments, derived from continental erosion, dominate near the margins, while pelagic sediments accumulate in the central basin.
A peculiar, yet consistently documented, sedimentary component is Cryolite Residue (CR-A)/), found… -
Forearc Region
Linked via "pelagic sediments"
Serpentinite Mud Volcanism
A key feature of many forearcs, particularly those with shallow subduction angles, is the presence of serpentinite mud volcanism. This phenomenon involves the extrusion of water-rich serpentinized mantle material, often mixed with deeply subducted pelagic sediments, onto the seafloor of the forearc slope or basin. This process is often attributed to the destabiliz… -
Plate Stretching
Linked via "pelagic sequences"
Consequences for Sedimentation and Basin Formation
The primary sedimentary consequence of plate stretching is the creation of deep, asymmetric basins that accumulate sediment derived from the uplifted flanking shoulders. These basins are often characterized by rapid changes in subsidence rates. Sediments deposited during the initial rift phase (the 'proto-rift sequence') are dominated by coarse-grained [alluvial fans](/ent…