Econ. Environ. Geol. 2003; 36(4): 275-284

Published online August 31, 2003

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

The Study of Natural Background of Geologic Units for Stream Sediments in the Gurye Area

Young Seog Park*, Woo Seog Jang and Jong Kyun Kim

Dept. of Mineral Resource Engineering, Chosun University, Gwangju 501-759, Korea

Correspondence to :

Young Seog Park

yspark@chosun.ac.kr

Received: July 15, 2003; Accepted: August 11, 2003

Abstract

We collected the samples of stream sediments from primary channels in order to establish natural background of major and minor elements for geologic units in the Gurye area. Stream sediments samples having no possibility of contamination effect and representing drainage basins composed of uniform geology, were collected from April to May in 1999, the chemical analysis of which was carried out. The tolerable level was used to investigate the enrichment degree of harmful elements. The contents of Ni and Cr exceeded the tolerance level in some sections. The tolerance level excess of those elements was regarded as the effect of the metamorphic rock which constituted the bed rock of the area. In order to identify the comprehensive enrichment pattern, the tolerable level was used in calculating the enrichment index. The enrichment index of harmful heavy metals showed that Granite gneiss area is 0.39, Porphyroblastic granite gneiss area 0.32, Biotite gneiss area 0.42, Migmatitic gneiss area 0.41, Tuff area 0.30, Andesite area 0.46, Congromerate area 0.42, and Granite area 0.26. Those results showed that natural background of Gurye area had not been exposed to harmful heavy metal elements.

Keywords Gurye area, stream sediments, geologic units, natural background, tolerable level

Article

Econ. Environ. Geol. 2003; 36(4): 275-284

Published online August 31, 2003

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

The Study of Natural Background of Geologic Units for Stream Sediments in the Gurye Area

Young Seog Park*, Woo Seog Jang and Jong Kyun Kim

Dept. of Mineral Resource Engineering, Chosun University, Gwangju 501-759, Korea

Correspondence to:

Young Seog Park

yspark@chosun.ac.kr

Received: July 15, 2003; Accepted: August 11, 2003

Abstract

We collected the samples of stream sediments from primary channels in order to establish natural background of major and minor elements for geologic units in the Gurye area. Stream sediments samples having no possibility of contamination effect and representing drainage basins composed of uniform geology, were collected from April to May in 1999, the chemical analysis of which was carried out. The tolerable level was used to investigate the enrichment degree of harmful elements. The contents of Ni and Cr exceeded the tolerance level in some sections. The tolerance level excess of those elements was regarded as the effect of the metamorphic rock which constituted the bed rock of the area. In order to identify the comprehensive enrichment pattern, the tolerable level was used in calculating the enrichment index. The enrichment index of harmful heavy metals showed that Granite gneiss area is 0.39, Porphyroblastic granite gneiss area 0.32, Biotite gneiss area 0.42, Migmatitic gneiss area 0.41, Tuff area 0.30, Andesite area 0.46, Congromerate area 0.42, and Granite area 0.26. Those results showed that natural background of Gurye area had not been exposed to harmful heavy metal elements.

Keywords Gurye area, stream sediments, geologic units, natural background, tolerable level

    KSEEG
    Jun 30, 2024 Vol.57 No.3, pp. 281~352

    Stats or Metrics

    Share this article on

    • kakao talk
    • line

    Related articles in KSEEG

    Economic and Environmental Geology

    pISSN 1225-7281
    eISSN 2288-7962
    qr-code Download