bioclast

bioclast

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  • Bioclast — Bioclasts are skeletal fragments of marine or land organisms that are found in sedimentary rocks laid down in a marine environment mdash;especially limestone varieties, some of which take on distinct textures and coloration from their predominate …   Wikipedia

  • Burgsvik beds — The Burgsvik beds are a sequence of shallow marine limestones and sandstones found near the town of Burgsvik in the southern part of Gotland, Sweden. The beds were deposited in the Upper Silurian period, around Ma|420, in warm, equatorial waters… …   Wikipedia

  • sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …   Universalium

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