quartzose

• “Erosion and the linear formation caused by folding mean that the mountains form strings of isolated, elevated land masses of quartzose substrates, similar to islands scattered throughout an archipelago.”

  Montane fynbos and renosterveld

• “Although shale is common, there is a mixture and interbedding of geologic materials, including cherts, siltstone, sandstone, quartzose limestone, and in Alabama some slate, quartzite, and metasiltstone.”

  Ecoregions of Alabama and Georgia (EPA)

• “Thick, resistant Pennsylvanian quartzose sandstone caps the ridges and Mississippian limestone, shale, and siltstone are exposed on lower slopes and in valleys.”

  Ecoregions of Kentucky (EPA)

• “On the plateau the stripping away of most of the late Cretaceous rocks has produced a rugged landscape of resistant, flat-bedded quartzose sandstones, criss-crossed by weaker areas that have been deeply eroded into a maze of narrow valleys and gorges.”

  Kakadu National Park, Australia

• “Substrate here consists largely of hard, slow-weathering Precambrian quartzose rocks.”

  Tasmanian temperate rain forests

• “The western region of Tasmania has a rugged topography, with a chain of north-south mountains that were formed as the quartzose basement sediments were folded repeatedly.”

  Tasmanian temperate rain forests

• “The Cohansey consists of fine - to coarse-grained quartzose sand with foot-thick lenses of gravel.”

  Jacques Cousteau National Estuarine Research Reserve, New Jersey

• “The ground is rocky, composed principally of quartzose detritus swept down by the constant streams.”

  How I Found Livingstone

• “The tin is obtained in the form of black grains from beds of quartzose sand, and is melted into ingots in rude clay furnaces.”

  The Malay Archipelago

• “The Jebel el-Abyaz is apparently the centre of the quartzose outcrop in North Midian (Madyan Proper).”

  The Land of Midian

Show 10 more examples...