자원환경지질 (Economic and Environmental Geology)

  • 제56권4호
  • /
  • Pages.397-408
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  • 2023
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  • 1225-7281(pISSN)
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  • 2288-7962(eISSN)
대한자원환경지질학회 (The Korean Society of Economic and Environmental Geology)
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Application of RTI to Improve Image Clarity of a Trace Fossil Cochlichnus Found from the Jinju and Haman Formations

  • Sangho Won (Jinju Pterosaur Tracks Museum) ;
  • Dal-Yong Kong (National Research Institute of Maritime Cultural Heritage)
  • 투고 : 2023.08.16
  • 심사 : 2023.08.27
  • 발행 : 2023.08.30
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초록

A total of 64 specimens of trace fossils were collected from the Jinju Formation of the construction site of Jinju Aviation Industrial Complex, and from the Haman Formation of Namhae Gain-ri fossil site. The fossils are continuously and regularly meandering sine-curve in shape. The fossil varies in morphology: width between 0.2 and 5.6 mm, wavelength between 1.5 and 28 mm, and amplitude between 0.9 and 7.9 mm; the Jinju specimens are commonly wider than the Haman ones. The ratio of wavelength to amplitude is more or less regular regardless of width of the specimen, and the linear correlation of the ratios shows that the Jinju specimens fit better than the Haman specimens. Taking all morphometric parameters, specimens in all size ranges are temporarily identified as ichnospecies Cochlichnus anguineus. In order to obtain more distinct and clearer images of Cochlichnus, we selected two specimens and applied a new imaging technology RTI. For photography of the trace fossils, 50 to 80 images were taken per set with photometric lighting close to the surface and horizontally. RTI technology clearly showed that the images of tiny fossils were improved: the surface contrast become sharper and messy and unnecessary information disappeared. Currently, RTI technology is used in many fields including preservation of cultural properties and archaeology. As a consequence, we hope to apply this technique to the field of paleontology, especially to the study of trace fossils of very small size.

키워드

과제정보

We would like to thank Theo Sohn, CEO of the Technology Research Institute for Culture & Heritage (TRIC) and Dr. Min Ji-hyun, who helped us with the outdoor and indoor RTI work for this study. We are also grateful to Prof. Seong-Joo Lee, Kyungpook National University for helping with English proofreading, and to the anonymous reviewers who improved the quality of the manuscript. A special thanks goes to officials of the Cultural Heritage Administration, Jinju City Hall, and Jinju Pterosaur Tracks Museum. This study was carried out as part of a research project on exhibition and utilization of maritime cultural heritage in the central part of the West Sea of the National Research Institute of Maritime Cultural Heritage.

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