Therefore, weathering indices must be used with utmost care particularly for sands derived from quartz rich polycyclic quartzose
On Ketchum Brook south of the second bridge on Elm Flat Road only the lower sedimentary member is exposed and here is composed of thick-bedded (40-50 cm), light grey, medium-grained, micaceous, quartz-rich feldspathic sandstone, with thinner (2 cm) interbeds of finer grained, light grey quartzose
sandstone and thinly laminated, light green siltstone and shale.
The Genna Selole Fm starts with alternations of quartzose
conglomerates and coarse sandstone lenses passing upwards into alternations of sandstones and grey pelites.
% silica in places), well-sorted, friable, fine to medium grained, rounded, highly spherical, and characteristically frosted, quartzose
sandstone with an average thickness of 80 to 100 ft.
A beach ridge containing coarse-grained predominantly quartzose
sands and scattered marine shells occurs on the landward side of the beach at Ninian Bay.
In North-East Estonia, the argillite complex is intercalated with numerous quartzose
silt beds .
Tectonic Setting: The quartz-feldspar-lithic fragment proportions of sandstone plot onto the transition continental and quartzose
recycled orogen provenance area and transition continental zones of the QmFLt diagram of Dickinson et al., 1983 (Figure 3).
Kent sands are generally friable, well sorted, and quartzose
. The matrix textures of the Kent sands are silty (Table 2) and contain very little clay.
The sandstone generally contains less than 1% P2O5 and over 80% SiO2, consistent with field observations of a sublithic to quartzose
In the Waimumu Coalfield, the Gore Lignite Measures consist of 10 major seams or seam groups separated by sandstone and mudstone that are overlain by 60 m or more of quartzose
sandy conglomerate (Isaac & Lindqvist, 1990: Fig.