Luminescence Dating on Quaternary Sediments: Cases of Active Structures in Western Taiwan
Date Issued
2008
Date
2008
Author(s)
Chen, Ya-Wen
Abstract
A hundred thousand years is but a short period in the earth’s history; however, it is the most momentous period for human beings. If scientists would like to predict the future, learning the trend of the past is the key and reliable chronological data are needed. In this study, the feasibility and applicability of luminescence methods are presented. As results from multiple tests of such methods have so far been successful in interpreting regional tectonics, confidence is what we have. Sequence stratigraphy and continuous chronological framework, especially from the luminescence dating, are integrated to investigate the accommodation space for specific drill sites in the southwestern coastal plain of Taiwan. It is concluded that tectonic subsidence has been operating since very late Pleistocene with a depo-centre located further southwestwards. Also a tectonic uplift due to detachment westward migration has been proposed to have occurred after 100 ka. Furthermore, in order to diminish losses in an earthquake, multiple dating methods, in particular focusing on the luminescence dating method, are employed in the studies to explore the details of active faults. The Chiuchiungkeng Fault and Chelungpu Fault have both been tested in this study to deduce the long-term slip rate and fault behavior. With evidence from successful applications employing appropriate experimental testing criteria, with minor adjustments for different areas, we conclude that the luminescence dating method has passed the acceptance criteria for Quaternary research in western Taiwan.
Subjects
Luminescence Dating
Quaternary
Western Taiwan
Active Structures
Type
thesis
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