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The AAPG/Datapages Combined Publications Database
AAPG Special Volumes
Abstract
Edited by Authors: Published
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* Zuhair Al-Shaieb
* ABSTRACT Diagenetic bands in sandstones consist of silica- and carbonate-cemented layers that are separated by clay-coated porous layers. Stylolites and other pressure-solution features such as penetrating grain boundaries suggest a mechanism for the derivation of silica cements. Diagenetic bands in clay-rich rocks appear to have two distinctly different origins. In the Pink/Red Fork interval, diagenetic chlorite bands exhibit no apparent relationship to sedimentary features. The chlorite bands have less porosity and smaller pore-aperture radii than the surrounding shale (Powers, 1991). In the Woodford Shale, silica- and clay-rich bands develop via the diagenetic modification or enhancement of sedimentary features. |
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