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Porosity trends of the Lower Cretaceous J Sandstone, Denver Basin, Colorado

Journal of Sedimentary Petrology

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Abstract

The petrographic factors that most affect J sandstone porosity variability at a given level of thermal maturity are carbonate cementation and clay content. Carbonate cement, where present, reduces porosity. If previously more widespread, carbonate cement could also introduce porosity heterogeneity by temporarily preserving the pore network relative to uncemented intervals. Abundant detrital and authigenic clay reduces porosity by occupying pores. Low clay content indirectly reduces porosity because the inhibiting effects of clay upon quartz cementation and pressure solution are largely absent. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Porosity trends of the Lower Cretaceous J Sandstone, Denver Basin, Colorado
Series title:
Journal of Sedimentary Petrology
Volume
61
Issue:
6
Year Published:
1991
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
909
Last page:
920
Number of Pages:
12