Honing in on the climate signal in seafloor topography
Date
2022
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Abstract
The corrugated surface of the seafloor expresses the most
areally extensive landform on Earth, known as “abyssal
hills”, inherited from when the oceanic crust was created
at a midocean ridge spreading center (1, 2) (Fig. 1). The
main process is the shifting and rotation of adjacent blocks
of crust relative to one another along fault zones predominantly
during periods of low magmatic activity, interspersed
between times of robust magmatism and the
emplacement new crust (1, 3). In the presence of the
steady far-field tug of plate tectonic forces, this interplay
between faulting and magmatism depends on processes
influencing the time dependence of magma generation,
storage, and delivery to the surface (4, 5). In PNAS, Huybers
et al. (6) argue that one such process originates with
the fall and rise of sea level during glacial–interglacial climate
cycles.
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Ito, G. (2022) Honing in on the climate signal in seafloor topography, Proc. Natl. Acad. Sci, 119 (32) e2209199, https://www.pnas.org/doi/full/10.1073/pnas.2209199119
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