This glossary comes from the SADC Water Hub


QuartziteA hard metamorphic rock which was originally sandstone. Sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts. Pure quartzite is usually white to grey.
Quaternary catchmentBasin catchments developed of the second period of the Cenozoic Era, from the end of the Tertiary Period through the present, characterized by the appearance and development of humans and including the Pleistocene and Holocene epochs.
Quinary catchment5th level sub-basins.