In geology, a slab window is a gap that forms in a subducted oceanic plate when a mid-ocean ridge meets with a subduction zone and plate divergence at the ridge and convergence at the subduction zone continue, causing the ridge to be subducted. [2]

在地质学中，板片窗是指洋中脊在大洋板块的俯冲过程中遇到俯冲带时，板块的汇聚和扩张持续进行，造成洋中脊被俯冲时形成的一个间隙。 [1] 也认为：正俯冲的洋中脊的持续扩张作用将会使该洋中脊两侧的洋壳板片之间在上覆板块之下形成一个持续加宽的间隙，这个间隙称为板片窗（slab window）。 小于10 Ma的大洋岩石圈具有浮力,其俯冲时往往形成板片窗。 板片窗形态依赖于3个主要因素:板块的相对运动和速率、俯冲前的洋脊-转换断层组合样式、俯冲角度。 影响板片窗 …

2018年2月26日 · A slab window occurs where a subducting plate tears or breaks-off, or where two plates subduct along a spreading ridge. This process alters mantle circulation and melting processes in the region, changing the chemistry of magmatism observed at the surface.

Subduction of this ridge segment creates a slab window, which is a place where an opening in the subducting plate or plates allows heat from the mantle to rise and contact the base of the overriding plate.

1996年4月20日 · If plate divergence and convergence continue after the ridge intersects the subduction zone, a slab window forms between the subducted parts of the diverging oceanic plates, producing anomalous thermal, physical and chemical effects in the surrounding asthenospheric mantle.

2023年12月1日 · Slab windows are remarkable and intriguing features that arise from ridge-trench interactions and have notable consequences for regional surface heat flow, magmatism (and geochemistry), seismicity, and topographic relief (DeLong and Fox, 1977).

2023年9月6日 · These distinct observations are commonly linked to a slab window opening and mantle upwelling. The Chile Triple Junction provides the ideal setup to study the mid-ocean ridge subduction process where both sides of the spreading center continue to subduct.

2011年8月31日 · The researchers suggest that the subducting oceanic slab east of Gorgona Island contained a gap. Hot mantle material gradually flowed through the opening, allowed the magma to form and, over time...

2017年7月14日 · However, the orientation of the slab window was poorly constrained at present due to lack of accurate measurements, which were sensitive to the slab window orientation. To resolve this ambiguity, we present three possible scenarios to check which one …

2005年1月1日 · A slab window is an asthenosphere-filled gap that forms between a pair of diverging, subducting oceanic plates in response to ridge subduction. As a spreading ridge descends into the mantle, the oceanic slabs on either side continue to diverge but cease to grow, and the ridge progressively unzips to form a gap called a slab window.