SMECTITE TO ILLITE CONVERSION IN BENTONITES AND SHALES OF THE EAST SLOVAK BASIN

被引：111

作者：

SUCHA, V ^{[1
]}

KRAUS, I ^{[1
]}

GERTHOFFEROVA, H ^{[1
]}

PETES, J ^{[1
]}

SEREKOVA, M ^{[1
]}

机构：

[1] SLOVAK ACAD SCI, INST GEOL, CS-84226 BRATISLAVA, CZECHOSLOVAKIA

来源：

CLAY MINERALS | 1993年 / 28卷 / 02期

关键词：

D O I：

10.1180/claymin.1993.028.2.06

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The conversion of smectite to illite has been studied in buried bentonites and shales of the East Slovak Neogene Basin, using X-ray diffraction analysis and transmission electron microscopy. A good correlation was observed in both rock types between the content of expandable layers in interstratified illite-smectite (I-S) minerals and burial depth (temperature), with shales from a given depth being markedly more illitic than bentonties. This difference disappeared at a depth of approximately 3 km, which represents a temperature of approximately 150-degrees-C. The diameter of fundamental illite particles increased with decreasing expandability. Potassium fixation together with neoformation appear to be the mechanisms of conversion of smectite to illite.

引用

页码：243 / 253

页数：11

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