Calcareous sinter

Sintering ( Sintar of Old High German, slag ', in geomorphology also Dauch ) is the substance, or rock, which is caused by a gradual mineral deposit ( " sintering " ), in particular, calcium deposits.

Formation

Sinter formed by depositing ( crystallization) of dissolved minerals in water, ie, in waters, aqueducts, reservoirs and containers or in a humid environment. It forms crust-like coatings

  • In the area - on slopes, terrain steps or terraces (sinter terrace)
  • And occurs in all kinds of shapes in caves, mines and damp tunnels as Speläothem ( speleothems ) of Sinterhäutchen up in the form of powerful banks.

Chemically, it is non-specific, alkali and / or alkaline earth metal salts of various inorganic, but also organic acids together with various additives. Petrological sintering is one of the Sedimentiten. In biology it is called in by incrustation (biology).

Examples

  • Mineral deposits in the nature of relatively pure composition: stalactites and other Speläothem forms, stone troughs and other relatively compact, finely layered forms; porous travertine ( tufa ) of travertine, which consist primarily of calcium carbonate
  • Is made ​​of siliceous sinter from cryptocrystalline silica or opal, which at hot springs can settle (eg geysers ) and sometimes referred to geyserite
  • Of sulfur Inter, mainly various sulfides and sulfates, often the result of volcanic processes
  • Sintering in the proper sense be called: the deposits in pots, pipes or hot water boilers ( boiler scale )
  • Urinstein
  • Weinstein
  • The crusts that form on stone, clay, metal and other archaeological artifacts, the long periods of time in the ground or in the sea
  • Mineral forms such as quartz veins in other rocks, agate, geodes ( geode )

Sinter deposits on a Roman aqueduct

Kalksinterterrasse in Unterdrackenstein ( Swabian Alb)

Special deposits

  • Growing rocks near Landau an der Isar
  • The occurrence of Böttinger marble in the Geopark Swabian Alb
  • The so-called Aquäduktenmarmor than sintered product of a Roman aqueduct in the Eifel
  • Aragonite deposits of Carlsbad, which has already been described by Johann Wolfgang von Goethe
  • Pamukkale (Turkey) and at Mammoth Hot Springs in Yellowstone National Park
  • Travertine deposits at the Plitvice Lakes
  • The cave pearls in the Gruta de las Canicas (Mexico)
  • Artificial reefs
Chemical substance Bed (geology) Volcanism Limescale Druse (geology) Evaporite Concretion Yellowstone-Nationalpark Plitvice Lakes National Park Carbonate–silicate cycle
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