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Basalts tend normally to form at mid-ocean ridges or at inter plate hotspots. However a specific type of Basalt known as Boninite which has a high silica and magnesium content and which is formed in the fore-arc and back-arc basins of subduction zones. This however is NOT a primary basalt.

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14y ago
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5mo ago

No, primary basalt is typically formed at mid-ocean ridges due to the upwelling of mantle material. At a subduction zone, basaltic magma is usually derived from the melting of the down-going oceanic plate, resulting in secondary basalt.

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Q: Can you get primary basalt at subduction zone?
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