Fault-controlled genesis of the Chilung Sea Valley (northern Taiwan) revealed by topographic lineaments

Song, Gwo-Shyh; Ma, Chung-Ping; Yu, Ho‐Shing

doi:10.1016/s0025-3227(00)00084-0

Cited by 15 publications

(24 citation statements)

References 31 publications

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“…These are steep-sided, deep valleys that are often linear and largely directed downslope. However, they may also be meandering (von der Borch et al, 1985), or have sharp turns caused by structures such as faults (Song et al, 2000). In general, submarine canyons vary from hundreds of metres to kilometres in width, and from tens to hundreds of metres in relief.…”

Section: Turbidity Currents Versus Seafloor Failure In Forming Submarmentioning

confidence: 99%

Seascape Evolution on Clastic Continental Shelves and Slopes

Pratson

Nittrouer

Wiberg

et al. 2007

Continental Margin Sedimentation

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The morphology of clastic continental margins directly reflects their formative processes. These include interactions between plate movements and isostasy, which establish the characteristic stairstep shape of margins. Other factors are thermal and loading-induced subsidence, compaction and faulting/folding, which create and/or destroy accommodation space for sediment supplied by rivers and glaciers. These processes are primary controls on margin size and shape. Rivers and glaciers can also directly sculpt the margin surface when it is subaerially exposed by sea-level lowstands. Otherwise, they deposit their sediment load at or near the shoreline. Whether this deposition builds a delta depends on sea level and the energy of the ocean waves and currents. Delta formation will be prevented when sea level is rising faster than sediment supply can build the shoreline. Vigorous wave and current activity can slow or even arrest subaerial delta development by moving sediments seaward to form a subaqueous delta. This sediment movement is accomplished in part by wave-supported sediment gravity flows. Over the continental slope, turbidity currents are driven by gravity and, in combination with slides, cut submarine canyons and gullies. However, turbidity currents also deposit sediment across the continental slope. The average angle of continental slopes (~4°) lies near the threshold angle above which turbidity currents will erode the seafloor and below which they will deposit their sediment load. Therefore, turbidity currents may help regulate the dip of the continental slope. Internal waves exert a maximum shear on the continental-slope surface at about the same angle, and may be another controlling factor.

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Section: Turbidity Currents Versus Seafloor Failure In Forming Submarmentioning

confidence: 99%

Seascape Evolution on Clastic Continental Shelves and Slopes

Pratson

Nittrouer

Wiberg

et al. 2007

Continental Margin Sedimentation

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“…Slope-confined canyons, such as these observed on the northern South China Sea margin, are a result of failure on the continental slope that can subsequently erode headward. The canyon morphology and position on the slope can also be controlled by such factors as faulting and pore-fluid flow (e.g., Song et al 2000). A variety of factors can trigger the onset of slope failure including sediment loading on the shelf, tectonic events, gas hydrate disassociation and currents within canyons (Shepard 1981;Mitchell 2008).…”

Section: Canyon Originmentioning

confidence: 99%

“…Canyons along the margin have been attributed a structural control to their origin (e.g., Song et al 2000). Faults are a common feature including active faults expressed There is no clear evidence that the orientation or motion of the faults is controlling the asymmetry of the canyons.…”

Section: Canyon Originmentioning

confidence: 99%

Submarine Mass Movements and Their Consequences

Yamada¹,

Kawamura²,

Ikehara³

et al. 2012

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“…Alternatively, fluvial systems can migrate across the shelf during low stands in sea level, and, igniting turbidity currents that erode and incise the shelf break, can create shelf‐indenting canyons as originally hypothesized by Daly [1936] and tested in the lab by Kuenen [1937]. The form and location of canyons may be impacted by other factors such as pore‐fluid flow, faulting, and capture of along‐shelf transport [e.g., Shepard et al , 1974; Orange , 1994; Song et al , 2000].…”

Section: Background On Canyons and Off‐shelf Transportmentioning

confidence: 99%

Demise of a submarine canyon? Evidence for highstand infilling on the Waipaoa River continental margin, New Zealand

Walsh¹,

Alexander²,

Gerber³

et al. 2007

Geophysical Research Letters

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Submarine canyons are major geomorphologic features on the Earth's surface. Their formation has received considerable debate, but their demise has received less attention. Research of modern canyons with cores and moorings has documented active sediment transport and deposition, but extrapolation of these local observations over larger areas is precluded by complex canyon geomorphology. High‐resolution multibeam and chirp data presented here provide convincing evidence of an infilling canyon head on the Waipaoa River margin of New Zealand. Tens of meters of Holocene sediment have accumulated on the outer shelf and in Lachlan canyon as a result of off‐shelf sediment transport. Regardless of the ultimate fate of this system over geological time scales, this research demonstrates highstand sedimentation as a possible mechanism for canyon burial and cause of canyon demise, which has important implications for the evolution of canyons globally.

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Fault-controlled genesis of the Chilung Sea Valley (northern Taiwan) revealed by topographic lineaments

Cited by 15 publications

References 31 publications

Seascape Evolution on Clastic Continental Shelves and Slopes

Seascape Evolution on Clastic Continental Shelves and Slopes

Submarine Mass Movements and Their Consequences

Demise of a submarine canyon? Evidence for highstand infilling on the Waipaoa River continental margin, New Zealand

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