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http://dx.doi.org/10.5467/JKESS.2017.38.7.546

Morphology and Texture of Microlites in the Baekdusan and Kyushu Obsidians  

Hwang, Ga-hyun (Department of Geology and Research Institute of Natural Sciences, Gyeongsang National University)
Jwa, Yong-Joo (Department of Geology and Research Institute of Natural Sciences, Gyeongsang National University)
Publication Information
Journal of the Korean earth science society / v.38, no.7, 2017 , pp. 546-551 More about this Journal
Abstract
We examine the morphology and texture of microlites included in the obsidians from the Baekdusan (Mt. Baekdu) and Kyushu (SW Japan) by using an electron microscope. According to the morphological types of microlites, the microlites in the Baekdusan obsidians are classified as Arculites, Asteroidal and Crenulite, whereas those in the Kyushu obsidians as various types of Arculites, Bacillite, Belonites, Crenulite, Furculite, Lath, Margarite, and Scopulites. Specifically, the Arculites in both obsidians show very distinctive crystal relationships, though they are mainly composed of magnetite and pyroxene. The Baekdusan Arculites exhibit the poikilitic texture of pyroxene crystals enclosing multiple magnetite crystals, whereas the Kyushu ones demonstrate the granular and/or intergranular texture of interlocking between magnetite and pyroxene crystals. This distinction can be used to discriminate the provenance of the obsidian artefacts from the prehistoric sites in the Korean Peninsula.
Keywords
obsidian; microlite; morphology; texture; Baekdusan; Kyushu;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 Jang, Y.D., Park, T.Y., Lee, S.M., and Kim, J.J., 2007, Petrologic and mineralogic studies on the origin of Paleolithic obsidian implements from Wolseongdong, Korea. Journal of the Korean Earth Science Society, 28, 731-740 (in Korean with English abstract).
2 Jin, M.E., Moon, S.W., Ryu, C.K., and Jwa, Y.J., 2014, Mineralogical Study on Microlites in the Baekdusan Obsidian and the Gadeokdo Obsidian Artefacts. Journal of Mineralogical Society of Korea, 27, 243-249 (in Korean with English abstract).   DOI
3 Kim, J.C., Kim, D.K., Youn, M., Yun, C.C., Park, G., Woo, H.J., Hong, M.Y., and Lee, G.K., 2007, PIXE provenancing obsidian artefacts from Paleolithic sites in Korea. Indo-Pacific Prehistory Association Bulletin, 27, 122-128.
4 Ross, C.S., 1962, Microlites in glassy volcanic rocks. American Mineralogist, 47, 723-740.
5 Trivedi, R. and Somboonsuk, K. 1984, Constrained Dendritic Growth and Spacing. Materials Science and Engineering, 65, 65-74.   DOI
6 Weinberg, F. and Chalmers, B., 1952, Further observations on dendritic growth in metals. Canadian Journal of Physics, 30, 488-502.   DOI
7 Williams, G.H., 1893, On the use of the terms poikilitic and micropoikilitic in petrography, The Journal of Geology, 1(2), 176-179.   DOI
8 Yi, S. and Lee, Y.I., 1996, Preliminary consideration on the geochemical characteristics of the obsidian artefacts. Journal of the Korean Archaeological Society, 35, 172-187.
9 Cho, N.C., Kang, H.T., and Han, M.S., 2005, Characterization of the Sangmuryongri obsidian artefacts based on chemical composition and texture. Journal of Korean Ancient Historical Society, 49, 5-26 (in Korean with English abstract).
10 Bates, R.L. and Jackson, J.A. (eds.), 1987, Glossary of Geology (3rd ed.). American Geological Institute, Alexandria, Virginia. 455 p.
11 Cho, N.C., Kang, H.T., and Chung, K.Y., 2006, Provenance study of obsidian artifacts found in the Korean peninsula based on trace elements and Sr isotope ratios. Journal of Korean Ancient Historical Society, 53, 5-21 (in Korean with English abstract).
12 Cho, N.C. and Choi, S.Y., 2010, Provenance study of obsidian from Gigok paleolithic site in Donghae-si using trace elements. Journal of Korean Ancient Historical Society, 70, 5-20 (in Korean with English abstract).
13 Cho, N.C. and Choi, S.Y., 2012, Chemical composition and provenance study of obsidian from Sangsa-ri paleolithic site in Cheolwon. Journal of Korean Ancient Historical Society, 78, 5-21 (in Korean with English abstract).
14 Clark, D.L., 1961, The Obsidian Dating Method. Current Anthropology 2, 111-114   DOI
15 Donaldson, C.H., 1976, An Experimental Investigation of Olivine Morphology. Contributions to Mineralogy and Petrology, 57, 187-213   DOI
16 Hibbard, M.J., 1995, Petrography to petrogenesis. Prentice-Hall, Inc. 587 p.