Alkylammonium characterization of smectite alteration in the Tertiary basins of southeast Korea

J. Ko, G. H. Lee, H. S. Moon, Yun Goo Song

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The layer charge characteristics of smectite from the Tertiary basins in the Pohang area, Korea have been studied in detail using the alkylammonium method. On the basis of layer charges, the smectite in the Pohang area can be classed as normal and high-charge (hc) smectite. The layer charge of the normal smectite averages 0.3, and ranges from 0.25 to 0.38/half unit-cell. The hc-smectite collapses on K saturation to become illite-like material and shows 10 Å-series reflections on X-ray diffraction. The layer charge of the hc-smectite ranges from 0.5 to 1. The layer charges do not appear to be related to stratification or to basins of occurrence. The diagenetic trend that may have existed in the region was probably disturbed by later volcanic activity. A systematic change in layer charge and geochemistry of smectite in Waeup illustrates that the heat and solutions associated with the volcanic activity may have played a role in the development of layer charge.

Original languageEnglish
Pages (from-to)243-254
Number of pages12
JournalClay Minerals
Volume33
Issue number2-3
Publication statusPublished - 1998 Jun 1

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smectite
basin
Geochemistry
Smectite
illite
stratification
geochemistry
X-ray diffraction
saturation
X ray diffraction

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology

Cite this

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abstract = "The layer charge characteristics of smectite from the Tertiary basins in the Pohang area, Korea have been studied in detail using the alkylammonium method. On the basis of layer charges, the smectite in the Pohang area can be classed as normal and high-charge (hc) smectite. The layer charge of the normal smectite averages 0.3, and ranges from 0.25 to 0.38/half unit-cell. The hc-smectite collapses on K saturation to become illite-like material and shows 10 {\AA}-series reflections on X-ray diffraction. The layer charge of the hc-smectite ranges from 0.5 to 1. The layer charges do not appear to be related to stratification or to basins of occurrence. The diagenetic trend that may have existed in the region was probably disturbed by later volcanic activity. A systematic change in layer charge and geochemistry of smectite in Waeup illustrates that the heat and solutions associated with the volcanic activity may have played a role in the development of layer charge.",
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Alkylammonium characterization of smectite alteration in the Tertiary basins of southeast Korea. / Ko, J.; Lee, G. H.; Moon, H. S.; Song, Yun Goo.

In: Clay Minerals, Vol. 33, No. 2-3, 01.06.1998, p. 243-254.

Research output: Contribution to journalArticle

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