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Questions and Answers
Which sedimentary rock contains pebbles, cobbles, and/or boulders embedded in sand, silt, and/or clay?
Which sedimentary rock contains pebbles, cobbles, and/or boulders embedded in sand, silt, and/or clay?
Which rock is formed from chemical precipitates and evaporites?
Which rock is formed from chemical precipitates and evaporites?
In which rock type are the grains usually compacted, and it may split easily?
In which rock type are the grains usually compacted, and it may split easily?
Which sedimentary rock contains microscopically to very coarse grains of calcite?
Which sedimentary rock contains microscopically to very coarse grains of calcite?
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What type of fragments are present in Breccia?
What type of fragments are present in Breccia?
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Study Notes
Inorganic Land-Derived Sedimentary Rocks
- Conglomerate: consists of pebbles, cobbles, and/or boulders embedded in sand, silt, and/or clay, with rounded fragments
- Breccia: consists of angular fragments
- Sandstone: composed of quartz, feldspar, and clay minerals, with grain size ranging from 0.006 to 0.2 cm
- Siltstone: composed of fine-grained particles, with grain size ranging from 0.0004 to 0.006 cm
- Shale: composed of compact, fine-grained particles, with grain size less than 0.0004 cm, and may split easily
Chemically and/or Organically Formed Sedimentary Rocks
- Rock salt (Halite): formed from chemical precipitates and evaporites, with fine to coarse crystalline texture
- Gypsum: formed from chemical precipitates and evaporites, with crystalline texture
- Dolostone: formed from bioclastic or crystalline calcite, with microscopic to very coarse texture
- Limestone: formed from precipitates of biologic origin or cemented shell fragments, with microscopic to very coarse texture
- Bituminous coal: formed from compacted carbon plant remains
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Description
Learn about the characteristics and compositions of various inorganic land-derived sedimentary rocks such as Conglomerate, Breccia, Sandstone, Siltstone, and Shale.
