| Title: | Eustatic sea-level change of 11-5 ka in western Taiwan, constrained by radiocarbon dates of core sediments |
| Authors: | Meng-Long Hsieh
Tzu-Hua Lai
Leh-Chun Wu
Wan-Chung Lu
Hsien-The Liu
Ping-Mei Liew |
| Contributors: | 地質系 |
| Keywords: | core
eustatic sea level
rock uplift |
| Date: | 2006 |
| Issue Date: | 2009-11-20 11:24:00 (UTC+8) |
| Abstract: | Twenty-nine cores and two outcrops in the Western Coastal Plain, each containing more than one radiocarbon date (5 - 20 ka; totally 74 dates), are used to determine the 11 - 5 ka eustatic sea level in Taiwan. All the dates are obtained from coastal sediments with deposition positions assumed +/-3 m of the sea level. These dates can be used to calculate rock uplift (subsidence) rates for given eustatic sea-level data. The sea level data derived from Penghu (< 5 ka) and the Sunda Shelf (> 11 ka) are applied, and the rock uplift of the study sites is assumed to be steady over time. The 11 - 5 ka sea level is constructed by repetition of changing its shape until the dates in the same cores yield consistent rock-uplift rates. Optimal sea-level curves are found to fit all but seven dates used. These sea-level curves are characterized by: (1) a rapid rise (> 13 m ky(-1)) around 11 - 10 ka; (2) a rise of 8 - 9 m ky(-1) from similar to 10 ka to 6.5 - 6.6 ka when the sea level approached the modern level, and (3) a much slower rise after 6.5 - 6.6 ka. |
| Relation: | TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES Volume: 17 Issue: 2 Pages: 353-370 |
| Appears in Collections: | [Department of Geology] journal articles
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