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P.M. Liew

Bio: P.M. Liew is an academic researcher from National Taiwan University. The author has contributed to research in topics: Tectonic uplift & Radiocarbon dating. The author has an hindex of 3, co-authored 3 publications receiving 180 citations.

Papers
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Journal ArticleDOI
TL;DR: In this article, the major structures of the Western Foothills of Taiwan mainly consist of NNE-SSW-trending folds and imbricated west-vergent thrust systems.

114 citations

Journal ArticleDOI
TL;DR: In this article, the tectonic trends that can be deduced from the Holocene raised shorelines between Ch'eng-kung and Hsin-she, along a 65-km long coastal sector in the eastern Coastal Range of Taiwan are investigated.

52 citations

Journal ArticleDOI
TL;DR: In this article, the authors reported that marine sediments deposited some 14,000 years ago, when the sea level was between 80 and 100 m below the present sea level, have been found exposed at about 17 m in altitude near Tu-lan, on the east coast of Taiwan.

23 citations


Cited by
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Journal ArticleDOI
11 Dec 2003-Nature
TL;DR: Erosion rates in the Taiwan mountains are estimated from modern river sediment loads, Holocene river incision and thermochronometry on a million-year scale and the pattern of erosion has changed over time in response to the migration of localized tectonic deformation.
Abstract: The erosion of mountain belts controls their topographic and structural evolution1,2,3 and is the main source of sediment delivered to the oceans4 Mountain erosion rates have been estimated from current relief and precipitation, but a more complete evaluation of the controls on erosion rates requires detailed measurements across a range of timescales Here we report erosion rates in the Taiwan mountains estimated from modern river sediment loads, Holocene river incision and thermochronometry on a million-year scale Estimated erosion rates within the actively deforming mountains are high (3–6 mm yr-1) on all timescales, but the pattern of erosion has changed over time in response to the migration of localized tectonic deformation Modern, decadal-scale erosion rates correlate with historical seismicity and storm-driven runoff variability The highest erosion rates are found where rapid deformation, high storm frequency and weak substrates coincide, despite low topographic relief

830 citations

Journal ArticleDOI
TL;DR: In this paper, stream-gradient and hypsometric analysis has been carried out to highlight the along-strike variations of morphotectonic features and to illustrate the relative activities in different tectonic regimes of the Western Foothills.

228 citations

Journal ArticleDOI
TL;DR: In this article, a seismo-stratigraphic interpretation of this data set leads to a new age assignment of the unconformity T0 which they place within the Pleistocene.

208 citations

01 Dec 2002
TL;DR: In this article, stream-gradient and hypsometric analysis has been carried out to highlight the along-strike variations of morphotectonic features and to illustrate the relative activities in different tectonic regimes of the Western Foothills.
Abstract: The Taiwan mountain belt provides a key example for analyzing the relation between morphology and tectonics in an active compressional environment. There is a striking geometrical relationship between the location of salients and reentrants of the mountain belt and the presence of major crustal inhomogeneities such as structural highs in the foreland basin. Major along-strike variations of structural styles occur in range-front rock units of the fold-thrust belt. Stream-gradient and hypsometric analysis has been carried out to highlight the along-strike variations of morphotectonic features and to illustrate the relative activities in different tectonic regimes of the Western Foothills. The normalized stream length-gradient index (SL index) and the Hack profile are two of the stream-gradient indices that effectively reflect the tectonic uplift in a region. De-trending and residual analysis of the hypsometric integral (HI) eliminates the spatial dependency of small drainage basins, and the residual hypsometric integral corresponds to differential uplift activity. Integration of stream-gradient indices and hypsometry provides more robust tectonic interpretation. Five morphotectonic provinces have been identified in the Western Foothills based on stream-gradient indices and hypsometry. Each province is bounded by a series of N140°E-trending transfer fault zones, either inherited from the Eurasian passive margin and/or newly formed in the sedimentary cover in response to the presence of basement highs within the foreland basin (the Peikang and Kuanyin highs). The morphotectonic features as well as deformation styles vary within each province. A high uplift but low shortening rate typifies the crustal deformation style in the transpressional regime north of the Peikang Basement High. On the contrary, a low uplift but high shortening rate characterizes the crustal deformation style in the transtensional regime south of the Peikang Basement High. The higher geomorphic indices suggest that greater tectonic activity occurs in central than in southwestern Taiwan. This inference is also supported by the coseismic deformation of the 1999 Chi-Chi earthquake.

199 citations

Journal ArticleDOI
TL;DR: In this article, high-resolution CHIRP sonar profiles across the Taiwan Strait reveal a large silt-sand-dominated deltaic clinoform, up to 50m thick, overlying the postglacial transgressive sea floor across the southeastern, central, and northern strait.

165 citations