Geological Characteristics and Distribution of Submarine Physiographic Features in the Taiwan Region

Yu, Ho‐Shing

doi:10.1080/713773391

Cited by 9 publications

(8 citation statements)

References 27 publications

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“…Southwest of the Penghu Islands is the southern Taiwan Strait where the Taiwan Banks, large bathymetric highs consisting of more than 30 shoals with water depths between 20 to 40 m, are major submarine topographic features (Mao and Hsieh 1989). For detailed descriptions of the topography of the sea floor around Taiwan, including the Taiwan Strait Shelf, refer to Boggs et al (1979), Mao and Hsieh (1989), , Yu and Chou (2001) and Yu (2003). Boggs et al (1979) noticed that the general size, shape and orientation of bathymetric lows and highs in the Taiwan Strait are inconsistent with known hydrodynamic patterns and considered them to be probably relict in origin.…”

Section: Submarine Topographymentioning

confidence: 99%

Morphology, Hydrodynamics and Sediment Characteristics of the Changyun Sand Ridge offshore Western Taiwan

Liao¹,

Yu²

2005

Terr. Atmos. Ocean. Sci.

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TAO, Vol. 16, No. 3, August 2005 622 Mainly medium to coarse-grained sands have accumulated on the Changyun Ridge to form sand banks. At the northern outlet of the Penghu Channel, the shoaling topography of the Changyun Ridge has caused a decrease in tidal current velocity and the subsequent deposition of sands, forming the present Changyun sand ridge. The formation of the eastern and western Changyun sand ridges is probably affected mostly by the tidal current patterns in the areas north of the Penghu Channel.

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Section: Submarine Topographymentioning

confidence: 99%

Morphology, Hydrodynamics and Sediment Characteristics of the Changyun Sand Ridge offshore Western Taiwan

Liao¹,

Yu²

2005

Terr. Atmos. Ocean. Sci.

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“…and Cao et al (2019) have proposed that the sandy sediments in the Taiwan Shoal might be of relict origin (e.g., Chen, 1993;Niino & Emery, 1961). However, Yu and Song (2000) and Shen et al (2021) considered that they formed during glacial and interglacial periods and were then reworked by Holocene wind-driven storm waves, thus being a mixture origin (e.g., Ma & Liu, 1994). Our results show that the sediments have high CIA and Al 2 O 3 /NaO but low K 2 O/Al 2 O 3 in the Han and Jiulong estuaries, suggestive of the modern hot and humid environment.…”

Section: Mixed Sediments In the Taiwan Shoal And Its Vicinitiesmentioning

confidence: 99%

Relict and Modern Sediments on the Continental Shelf of the Northern South China Sea: A Reconsideration

et al. 2023

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Understanding the temporal‐spatial patterns of modern and relict sediments is of importance for assessing changes in the Quaternary environment and sea‐level. Sedimentological and geochemical data is presented, along with in situ shell‐based accelerator mass spectrometry 14C ages of 30 samples from the surface sediments on the northern shelf of the South China Sea (NSSCS). The authors’ data show that the NSSCS surface sediments exhibit considerable diversity in composition. Modern sediments are primarily constrained to the NW inner shelf, which is fed by fluvial sands sourced from Coastal South China river systems and dominated by the Pearl River Estuary delivery. The transport and discharge of the terrestrial sediments to the NSSCS is highly influenced by the Guangdong Longshore Current and its secondary cyclonic eddies. Relict sediments dominated by well‐sorted, medium‐ and coarse‐grained sands were identified in the NW Shenhu and NW Dongsha areas of the outer NSSCS. The sedimentology and geochemistry of the relict sediments imply that they were deposited in a dry and cold environment either during the low sea levels of the late Pleistocene (∼40 ka) or the early Holocene (∼10 ka). To the east, the Taiwan Shoal and vicinity are dominated by a sand mixture, at which the relict sediments were reworked by terrigenous supply and modern hydrodynamic environment due to the compound action of the Guangdong Longshore Current, seasonal cyclones, and Kuroshio Intrusion. The present isobaths of ∼−90 m in the NSSCS might be the reflective of the early Holocene coastal delta or the last glacial maximum shoreline.

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“…3). Among these canyons, the Kaoping Canyon is the largest with a length of about 260 km, extending from its head immediately near the mouth of the Kaoping River, crossing the shelf and slope region, and finally merging into the northern end of the Manila Trench Yu, 2003).…”

Section: Geomorphological Setting Of the Submarine Canyonmentioning

confidence: 99%

Geological Characteristics and Distribution of Submarine Physiographic Features in the Taiwan Region

Cited by 9 publications

References 27 publications

Morphology, Hydrodynamics and Sediment Characteristics of the Changyun Sand Ridge offshore Western Taiwan

Morphology, Hydrodynamics and Sediment Characteristics of the Changyun Sand Ridge offshore Western Taiwan

Relict and Modern Sediments on the Continental Shelf of the Northern South China Sea: A Reconsideration

Morphotectonics and incision of the Kaoping submarine canyon, SW Taiwan orogenic wedge

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