| 11. | They form as an isostatic response to an orogenic load.
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| 12. | The old slab breaks off and the orogenic wedge collapses.
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| 13. | Intercratonic orogenic belts are characteristic of ocean basin closure.
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| 14. | However, interpretation of orogenic belts can be difficult.
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| 15. | Thrust faults occur in the foreland basin which occur marginal to orogenic belts.
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| 16. | These include intracontinental orogenic belts may also produce phonolites.
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| 17. | Intracratonic orogenic belts occur as thrust belts and do not contain any oceanic material.
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| 18. | Sandstone is converted into quartzite through heating and pressure usually related to orogenic belts.
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| 19. | The chalk was formed in the Late Cretaceous orogenic movements that created the Alps.
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| 20. | The strong orogenic extension and W-type.
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