Terms designating composition and physical characteristics

Terms designating composition and physical characteristics

Table
Terms designating composition and physical characteristics
Detrital rocks
Rudites (coarse)
conglomerates (rounded clasts)
breccias (angular clasts)
  basal, or transgression
  fanglomerates (in alluvial fans)
  tillites (glacially transported)
Arenites (medium-grained)
sandstone
arkose (feldspar-rich)
graywacke (sandstone with mud matrix)
quartzite (orthoquartzite)
Lutites (fine-grained)
siltstone
shale
mudstone or claystone
argillite
loess (transported and deposited by wind)
Nondetrital rocks
Precipitates
chemical precipitates (rocks formed by precipitation from seawater or fresh water)
evaporites (products of evaporation from saline brines)
duricrust rocks (hardened surface or mean-surface layer of any composition)
Organic
zoogenic (made up of hard parts of animals; e.g., crinoidal limestone)
phytogenic (made up of plant remains; e.g., algal limestone)
See as table:

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Universalium. 2010.

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