Deep wells on Dukhan and the North Field have penetrated shales and quartzitic
sandstones of the Haushi and Tawil formations (Fms), which even at depths in excess of 13,000 feet exhibited good porosity.
Beshr, Almusallam and Maslehuddin (2003) studied the effect of four types of coarse aggregates, namely calcareous, dolomitic, quartzitic
limestone and steel slag, on compressive strength and elastic modulus of high strength concrete, and concluded that the effect of the type of coarse aggregate is more significant on the modulus of elasticity when compared to that of compressive strength.
Based on Pickett Cross-plots and various litho-logs, the transect lithology evaluated for Hangu formation consists offine to medium grained, light grey siliceous sandstone with inter-beds of shale and patches of carbonaceous claystone at the top and bottom, while the Lumshiwal formation comprises mainly of fine to medium grained, dark grey to greenish grey, quartzitic
, abrasive sandstone with carbonaceous, glauconitic shale, siltstone and sandy limestone intercalations at places.
In other cases, however, they are related to thin sandstone beds composed of fine-grained, mainly quartzitic
sandstones (>90% quartz grains).
On the aar susceptibility of granitic and quartzitic
aggregates in view of petrographic characteristics and accelerated testing, in 14th International Conference on Alkali-Aggregate Reactions in Concrete, 20- 25 May 2012, Austin, Texas, USA.
Fine aggregate used were locally sourced quartzitic
natural river sand in uncrushed form with a specific gravity of 2.
Interbedded in the section are tabular and laterally continuous red mudstones and claystones with interbedded tabular sandstones interpreted as lacustrine intervals, as well as significant well sorted orange quartzitic
sandstones with dune-scale cross-bedding interpreted as aeolian dunes.
In Hardangervidda in southwest Norway, the source of quartzitic
sediments is thought to be in a 'Telemark Land' to the south, whereas the sea became deeper in a northwestern direction (Rasmussen et al.
However, 66% of the hammers used or re-used as anvils were composed of the commonly harder quartzitic
sandstones and/ or coarser grain size lithologies.
On the Willunga Fault Scarp, for example, bevelled spurs stand at almost 160 m above sea level and still carry a scatter of rounded, mainly quartzitic
, cobbles and gravels (W.
According to these authors above, igneous rocks of this area occur as small, circular to oval outcrops and include members of the Older granite suite mainly granites, granodiorites and syenites while associated schists in the area are: quartz-biotite schist, amphibolite schist, muscovite schist and quartzitic
All had the same original pre-disturbance vegetation and their soils were developed from the same quartzitic
parent material (Yan et al.