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Asymmetric Zonation of a Thick Ordovician K-Bentonite Bed at Kinnekulle, Sweden
Bentonite Diagenesis Illite/smectite Potassium Shale X-ray powder diffraction
2012/1/9
The clay fraction of a …2-m-thick K-bentonite at Kinnekulle in southwestern Sweden has been studied by X-ray powder diffraction, chemical analyses, and cation-exchange capacity determinations. Previou...
Chemical Characteristics and Origin of Ordovician K-Bentonites along the Cincinnati Arch
Bentonite Chemical composition Illite/smectite Interstratification K-bentonite Rectorite
2012/2/8
K-bentonites of the Middle Ordovician High Bridge Group along the Cincinnati arch are characterized by interstratified illite/smectite (I/S) clays with rectorite-type ordering. Approximately 20% of th...
Clay Petrology of Cambro-Ordovician Continental Margin, Cow Head Klippe, Western Newfoundland
Clay Petrology Cambro-Ordovician Continental Margin Cow Head Klippe
2012/2/13
The sedimentary rocks of the Taconic Cow Head klippe contain three clay-mineral suites of progressively younger stratigraphic occurrence. An illite-14A chlorite suite is the oldest, occurring in the M...