File:Rudstone.svg

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Original file ‎(SVG file, nominally 744 × 645 pixels, file size: 143 KB)

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Description
English: Schematic rudstone as seen in thin section under the petrographic microscope.

Type of carbonaceous rock according to the depositional texture:

  • Alloctonous carbonates - Original components not bound at the deposition time.
  • 10% or more of components larger than sand size (> 2 mm).
  • Rock grain-supported (supported by the fraction of> 2 mm).

Legend:

  • Dotted background: micritic matrix.
  • Curved blue particles: bioclasts (indeterminate fossils, eg bivalve fragments).
  • Large clasts with arrow shape: bioclasts (eg belemnoids fossils)
  • Blue circles: oolites / ooids.
  • Black spheroids: bioclasts (pellets).
  • Other: bioclasts (eg fossils of gastropods).
Based on: Dunham (1962), Embry & Klovan (1971) and Lokier & Al Junaibi (2016) (for full references see below)
 
Español: Esquema de una caliza rudstone vista en lámina delgada al microscopio petrográfico.

Tipo de roca carbonática según la textura deposicional:

  • Carbonatos alóctonos - Componentes originales no unidos en el momento de la deposición.
  • 10% o más de los componentes mayores que el tamaño arena (>2 mm)
  • Grano-soportado (soportado por la fracción de >2 mm)

Leyenda:

  • Con trama de puntos: matriz micrítica.
  • Partículas azules curvas: bioclastos (fósiles indeterminados. P.ej. fragmentos de bivalvos).
  • Clastos grandes con forma de flecha: bioclastos (fósiles de belemnites).
  • Círculos azules: oolitos/ooides.
  • Esferoides negros: bioclastos (pellets).
  • Otros: bioclastos (fósiles de gasterópodos).

Basado en:

Date
Source Own work
Author PePeEfe

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