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Journal of Applied Sciences
  Year: 2003 | Volume: 3 | Issue: 10 | Page No.: 604-613
DOI: 10.3923/jas.2003.604.613
 
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The Types of Clay Minerals in the Kongdian Formation (Upper Part), South Slope of the Dongying Depression, East China

Mutwakil Nafi, Fei Qi and Yang Xaing Hua

Abstract:
The Upper part of the Kongdian formation of the Paleocene-Eocene age consists mainly of fine to medium feldspathic sandstone. Samples analyzed are from depths of 1572.55 to 2298m, representing a temperature range of 60.5 to 88.5 °C. The authigenic clay minerals are composed of the following: illite-smectite mixed layer, illite, kaolinite, and chlorite (not detected in the samples). The dominant clay minerals are illite/smectite mixed layer, illite, and kaolinite respectively. The I/S mixed layer occurs as irregular flakes with short lath-like projection. The illite is also formed as irregular flakes with short lath-like projection. The authigenic kaolinite occurs as pseudohexagonal plates and pseudohexagonal-staked plates. The authigenic clays occur as pore linings and pore fillings. The major mineralogical change with depth takes place over the interval involving smectite conversion into illite or I/S mixed layer, increasing the amount of illite, and decreasing the amount of kaolinite.
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How to cite this article:

Mutwakil Nafi, Fei Qi and Yang Xaing Hua , 2003. The Types of Clay Minerals in the Kongdian Formation (Upper Part), South Slope of the Dongying Depression, East China. Journal of Applied Sciences, 3: 604-613.

DOI: 10.3923/jas.2003.604.613

URL: https://scialert.net/abstract/?doi=jas.2003.604.613

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