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- Q575866 subject Q6935647.
- Q575866 subject Q7085884.
- Q575866 subject Q7163795.
- Q575866 subject Q7163796.
- Q575866 abstract "Pellets are small spherical to ovoid or rod-shaped grains that are common component of many limestones. They are typically 0.03 to 0.3 mm long and composed of carbonate mud (micrite). Their most common size is 0.04 to 0.08 mm. Pellets typically lack any internal structure and are remarkably uniform in size and shape in any single limestone sample. They consist either of aggregated carbonate mud, precipitated calcium carbonate, or a mixture of both. They either are or were composed either of aragonite, calcite, or a mixture of both. Also, pellets composed of either glauconite or phosphorite are common in marine sedimentary rocks. Pellets occur in Precambrian through Phanerozoic strata. They are an important component mainly in Phanerozoic strata. The consensus among sedimentologists and petrographers is that pellets are the fecal products of invertebrate organisms because of their constant size, shape, and extra-high content of organic matter.Pellets differ from oolites and intraclasts, which are also found in limestones. They differ oolites in that pellets lack the radial or concentric structures that characterize oolites. They differ from intraclasts in that pellets lack the complex internal structure, which is typical of intraclasts. In addition, pellets, quite unlike intraclasts, are characterized by a remarkable uniformity of shape, extremely good sorting, and small size.By definition, pellets differ from peloids, in that pellets have a specific size, shape, and implied origin—while peloids vary widely in size, shape, and origin. Pellets, in the strict sense, are fecal products of invertebrate organisms. Peloids are allochems of any size, structure, or origin. As a result, peloids not only include possible pellets, but also include a variety of other distinctly non-pellet grains—such as indistinct intraclasts, micritized ooids, or fossil fragments. In addition, some peloids are even microbial or inorganic precipitates. Carbonate geologists consider the vast majority of peloids as secondary allochems created by biological degradation or “micritization” of other primary carbonate grains, i.e., ooids, bioclasts, or pellets.".
- Q575866 thumbnail PeloidsCarboniferousNV.jpg?width=300.
- Q575866 wikiPageWikiLink Q101313.
- Q575866 wikiPageWikiLink Q103910.
- Q575866 wikiPageWikiLink Q10953035.
- Q575866 wikiPageWikiLink Q1424327.
- Q575866 wikiPageWikiLink Q170449.
- Q575866 wikiPageWikiLink Q171917.
- Q575866 wikiPageWikiLink Q1761229.
- Q575866 wikiPageWikiLink Q2286246.
- Q575866 wikiPageWikiLink Q23757.
- Q575866 wikiPageWikiLink Q23767.
- Q575866 wikiPageWikiLink Q23775.
- Q575866 wikiPageWikiLink Q3073804.
- Q575866 wikiPageWikiLink Q3306858.
- Q575866 wikiPageWikiLink Q423034.
- Q575866 wikiPageWikiLink Q43806.
- Q575866 wikiPageWikiLink Q477566.
- Q575866 wikiPageWikiLink Q632078.
- Q575866 wikiPageWikiLink Q6935647.
- Q575866 wikiPageWikiLink Q7085884.
- Q575866 wikiPageWikiLink Q7163795.
- Q575866 wikiPageWikiLink Q7163796.
- Q575866 comment "Pellets are small spherical to ovoid or rod-shaped grains that are common component of many limestones. They are typically 0.03 to 0.3 mm long and composed of carbonate mud (micrite). Their most common size is 0.04 to 0.08 mm. Pellets typically lack any internal structure and are remarkably uniform in size and shape in any single limestone sample. They consist either of aggregated carbonate mud, precipitated calcium carbonate, or a mixture of both.".
- Q575866 label "Pellets (petrology)".
- Q575866 depiction PeloidsCarboniferousNV.jpg.