Flat slab subduction is characterized by a low subduction angle (<30 degrees to horizontal) beyond the seismogenic layer and a resumption of normal subduction far from the trench. A slab refers to the subducting lower plate. Although, some would characterize flat slab subduction as any shallowly dipping lower plate as in western Mexico. Flat slab subduction is associated with the pinching out of the asthenosphere, an inland migration of arc magmatism (magmatic sweep), and an eventual cessation of arc magmatism. The coupling of the flat slab to the upper plate is thought to change the style of deformation occurring on the upper plate's surface and form basement-cored uplifts like the Rocky Mountains. The flat slab also may hydrate the lower continental lithosphere and be involved in the for
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| - Flat slab subduction (en)
- 平板俯衝 (zh)
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| - 平板俯衝（英語：flat slab subduction）的特點是俯衝角度有兩個折點，在淺処的震源層(seismogenic layer)與其他俯衝板塊相同，但在震源層之外的俯衝角較小（與水平面小於 30 度），並且在遠離海溝的地方恢復正常俯衝角度。 平板俯衝與在墨西哥西部的下部板塊淺傾斜不同。平板俯衝可導致軟流圈的尖滅、弧形岩漿作用向內陸遷移以及導致弧形岩漿作用的最終停止。 平板與被俯衝的上板之間的耦合被認為，是造成上板表面的變形改變方式，如同落基山脈一樣，是由基底核心隆起造成的.平板還可能導致大陸岩石圈下部的水化，形成經濟意義礦床。在俯衝過程中，平板本身可能會變形或屈曲，從而導致平板上的海洋沉積物出現沉積間斷。 平板俯衝的停止和弧形火山活動的反向遷移有關。關於平板俯衝成因有多種假設，由於較厚（15-20 公里）並有浮力的的洋殼俯衝,或由於海溝的退滾並伴隨著上板塊的快速超越的，以至於增強的海溝吸力。 南美洲西海岸有兩個最大的平板俯衝帶。 平板俯衝佔全球俯衝帶的10%。 (zh)
- Flat slab subduction is characterized by a low subduction angle (<30 degrees to horizontal) beyond the seismogenic layer and a resumption of normal subduction far from the trench. A slab refers to the subducting lower plate. Although, some would characterize flat slab subduction as any shallowly dipping lower plate as in western Mexico. Flat slab subduction is associated with the pinching out of the asthenosphere, an inland migration of arc magmatism (magmatic sweep), and an eventual cessation of arc magmatism. The coupling of the flat slab to the upper plate is thought to change the style of deformation occurring on the upper plate's surface and form basement-cored uplifts like the Rocky Mountains. The flat slab also may hydrate the lower continental lithosphere and be involved in the for (en)
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| - Flat slab subduction is characterized by a low subduction angle (<30 degrees to horizontal) beyond the seismogenic layer and a resumption of normal subduction far from the trench. A slab refers to the subducting lower plate. Although, some would characterize flat slab subduction as any shallowly dipping lower plate as in western Mexico. Flat slab subduction is associated with the pinching out of the asthenosphere, an inland migration of arc magmatism (magmatic sweep), and an eventual cessation of arc magmatism. The coupling of the flat slab to the upper plate is thought to change the style of deformation occurring on the upper plate's surface and form basement-cored uplifts like the Rocky Mountains. The flat slab also may hydrate the lower continental lithosphere and be involved in the formation of economically important ore deposits. During the subduction, a flat slab itself may be deformed, or buckling, causing sedimentary hiatus in marine sediments on the slab. The failure of a flat slab is associated with ignimbritic volcanism and the reverse migration of arc volcanism. Multiple working hypotheses about the cause of flat slabs are subduction of thick, buoyant oceanic crust (15–20 km) and trench rollback accompanying a rapidly overriding upper plate and enhanced trench suction. The west coast of South America has two of the largest flat slab subduction zones. Flat slab subduction is occurring at 10% of subduction zones. (en)
- 平板俯衝（英語：flat slab subduction）的特點是俯衝角度有兩個折點，在淺処的震源層(seismogenic layer)與其他俯衝板塊相同，但在震源層之外的俯衝角較小（與水平面小於 30 度），並且在遠離海溝的地方恢復正常俯衝角度。 平板俯衝與在墨西哥西部的下部板塊淺傾斜不同。平板俯衝可導致軟流圈的尖滅、弧形岩漿作用向內陸遷移以及導致弧形岩漿作用的最終停止。 平板與被俯衝的上板之間的耦合被認為，是造成上板表面的變形改變方式，如同落基山脈一樣，是由基底核心隆起造成的.平板還可能導致大陸岩石圈下部的水化，形成經濟意義礦床。在俯衝過程中，平板本身可能會變形或屈曲，從而導致平板上的海洋沉積物出現沉積間斷。 平板俯衝的停止和弧形火山活動的反向遷移有關。關於平板俯衝成因有多種假設，由於較厚（15-20 公里）並有浮力的的洋殼俯衝,或由於海溝的退滾並伴隨著上板塊的快速超越的，以至於增強的海溝吸力。 南美洲西海岸有兩個最大的平板俯衝帶。 平板俯衝佔全球俯衝帶的10%。 (zh)
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