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Journal of Applied Sciences

Year: 2007 | Volume: 7 | Issue: 3 | Page No.: 368-373
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Authors

Basem K. Moh d

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Research Article

Characterization of the Secondary Porosity of Some Cretaceous-Recent Jordanian Building Limestones

Basem K. Moh d
Different types of limestone (including chalk, travertine, marble, wacke stone and packstone-grainstone) commonly used as building stones in Jordan with porosity ranging from around 1% to less than 30% have been covered in this study. The total porosity has been split into matrix and secondary porosity. Types (fracture/moldic) and amounts of secondary porosity have also been defined. The relationships of the different porosity types with the other measured or derived properties have been delineated using correlation. Mathematical formulae have been presented to derive complicated or difficult to measure properties from easily measured ones. As indicated by the calculated cementation exponent value m and documented petrographically, tight limestones are dominated by fracture porosity, whereas highly porous limestones are dominated by moldic porosity. This is well exemplified by Siwaqa travertine where vugs are dominant in the high porosity varieties and fractures in the low porosity samples. Practical implications of the present work and its limitations have also been discussed.
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