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Sediment dispersal in the foreland sedimentary system in southwestern Taiwan 俞何興 臺大海洋研究所.

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Presentation on theme: "Sediment dispersal in the foreland sedimentary system in southwestern Taiwan 俞何興 臺大海洋研究所."— Presentation transcript:

1 Sediment dispersal in the foreland sedimentary system in southwestern Taiwan 俞何興 臺大海洋研究所

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17 Intraslope Basin Basins are located on the continental slopes. Intraslope basins form in a slope region where the salt diapirism ( mud diapirism, growth faulting, etc) produce uplift of adjacent areas, creating a depression ( basin between local highs).

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20 Staging-area concept E. Mutti et al./Marine and Petroleum Geology 20 (2003) 523-526

21 Sediment carried by high-gradient river systems to relatively small alluvial and coastal plains and narrow shelves of convergent margins; some large floods may carry significant volume of sediment directly from fluvial drainage basins to deep waters without intermediate staging areas. (i.e., delta)

22 Conclusions: Source: small mountainous basin (3250 km); small mountainous river Sink: Kaoping shelf-slope (intra-slope basins) River-Canyon Connection (by- pass sediment pathway)

23 Point source: submarine canyon Line source: coastlines; shelf edges Sediment dispersal path: from the mountain top (Yushan 3952 m) to the deep sea trench (Manila Trench, 3600 m)


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