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Vertical intraplate motions are not easily related to plate tectonics. Understanding their underlying mechanism is further complicated by poor constraints on the magnitude and timing of these motions. Western Siberia is a prominent intraplate area affected by vertical tectonics. Shortly after the assemblage of Pangaea, the region experienced substantial uplift followed by a long period of subsidence...
The Pacific Ocean is surrounded by subduction zone systems leading to a decreasing surface area as well as sub-surface mantle domain. In contrast, the Atlantic realm is characterized by passive margins and growing in size. To maintain global mass balance, the Caribbean and the Scotia Sea have been proposed as Pacific-to-Atlantic transfer channels for sub-lithospheric shallow mantle. We concentrate...
The Scotia Sea in the South Atlantic holds a prominent position in geodynamics, because it has been proposed as a potential outlet of asthenosphere from under the shrinking Pacific into the mantle beneath the opening Atlantic. Shear wave splitting and geochemical studies have previously tested this hypothesis. Here, we take a different approach by calculating present-day dynamic topography of the...
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