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Albitization of feldspars in sandstones from the Gohan (Permian) and Donggo (Permo-Triassic) formations, Gohan area, Kangwondo, Korea

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Abstract

Sandstones in the Gohan and Donggo formations in the Gohan area, Korea, contain considerable amounts of feldspars. Electron probe microanalysis (EPMA), backscattered electron microscopy (BSE), cathodoluminescence (CL), and microscopic petrography show that many of these feldspars consist of albite. Most of these albites are characterized by moderately high chemical purity (Ab 97–100) and do not display cathodoluminescence. These characteristics suggest that the albite is probably authigenic, formed during burial diagenesis by alteration of plagioclase and K-feldspar. The presence of abundant albite suggests that the sediments were buried to depths corresponding to the burial temperature that probably exceeds 90°C.

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Authors and Affiliations

  1. Department of Earth System Sciences, Yonsei University, 120-749, Seoul, Korea

    Kang-Min Yu

  2. Department of Geological Sciences, University of Oregon, 97403-1272, Eugene, Oregon, USA

    Sam Boggs & Abbas Seyedolali

  3. Department of Earth System Sciences, Yonsei University, 120-749, Seoul, Korea

    Jaehong Ko

Authors
  1. Kang-Min Yu
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  2. Sam Boggs
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  3. Abbas Seyedolali
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  4. Jaehong Ko
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Yu, KM., Boggs, S., Seyedolali, A. et al. Albitization of feldspars in sandstones from the Gohan (Permian) and Donggo (Permo-Triassic) formations, Gohan area, Kangwondo, Korea. Geosci J 1, 26–31 (1997). https://doi.org/10.1007/BF02910447

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  • DOI: https://doi.org/10.1007/BF02910447

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