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| Collot, Julien; Patriat, Martin; Etienne, S.; Rouillard, P.; Soetaert, F.; Juan, C.; Marcaillou, B.; Palazzin, G.; Clerc, C.; Maurizot, P.; Pattier, F; Tournadour, E.; Sevin, B.; Privat, A.. |
| Classically, deepwater fold-and-thrust belts are classified in two main types, depending if they result from near- or far-field stresses and the understanding of their driving and triggering mechanism is poorly known. We present a geophysical dataset off the western margin of New Caledonia (SW Pacific) that reveals deformed structures of a deepwater fold-and-thrust belt that we interpret as a near-field gravity-driven system, which is not located at a rifted passive margin. The main factor triggering deformation is inferred to be oversteepening of the margin slope by post-obduction isostatic rebound. Onshore erosion of abnormally-dense obducted material, combined with sediment loading in the adjacent basin, has induced vertical motions that have caused... |
| Tipo: Text |
Palavras-chave: Deepwater fold-and-thrust belt; Obduction; Isostasy. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00405/51614/52162.pdf |
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