| 21. | Volcanic rocks produced in these island arcs are found among the ophiolites of the Penninic nappes.
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| 22. | These are zones of variably island arc terranes.
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| 23. | Generally, orogenic belts consist of long parallel strips of crust, produce volcanoes, and build island arcs.
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| 24. | The subduction zone forming the South Sandwich Trench lies to the east of the island arc.
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| 25. | Trenches are generally parallel to a volcanic island arc, and about 200 km from a volcanic arc.
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| 26. | This volcanic active island arc has submerged ancestors in Jane and Discovery banks in the southern ridge.
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| 27. | A second theory involved collision of the continent with an island arc above a west-dipping subduction zone.
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| 28. | Oceanic trenches are a distinctive morphological feature of volcanic island arc, and about from a volcanic arc.
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| 29. | The islands are all active volcanoes lying atop an island arc that stretches south to the Marianas.
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| 30. | The island arc is formed at the convergent boundary where the Pacific Plate subducts under the Indo-Australian Plate.
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