Writers : Aghaei, S. A.; Mahboobi, A.; Moosavi Harami, R.; Najafi, M.
Refference : The Forth National Geological Conference of Payam Noor University(PNU)
Publishing Year : 1389

Abstract :

Upper Jurassic carbonate successions have good exposure in Jajarm area with thickness about 500m. One of the most important diagenetic proccesses in the study carbonate rocks is presence of chert nodules and silicification of skeletal and nonskeletal grains. Chert nodules have various shapes such as spherical, elliptical, elongated, discoid and irregular. Silicification in these deposits mostly are replacment that the carbonate residues in nodules and slicified parts documented this idea. Silica has granular, drusy, radial and mostly microcrystaline fabrics. Microcrystaline quartz mostly are in deep facies radiolar and sponge spicule bearing lime mudstone, wackestone and packstones that indicated dissolution of radiolar and sponge spicules after death have been one of the most important source of silica. Different silicification amount and quartz size in different parts of studid successions indicated various silica saturation degree in these parts.

Subject List : Silicification