Gyttja (sometimes gytta,[1] from Swedishgyttja) is a mud formed from the partial decay of peat. It is black and has a gel-like consistency. Aerobic digestion of the peat by bacteria forms humic acid[2] and reduces the peat in the first oxygenated metre (generally 0.5 metre) of the peat column. As the peat is buried under new peat or soil the oxygen is reduced, often by waterlogging, and further degradation by anaerobic microbes, anaerobic digestion can produce gyttja. The gyttja then slowly drains to the bottom of the column.[3] It pools at the bottom of the peat column, about 10 metres (33 ft) below the surface or wherever it is stopped by e.g. compacted soil/peat, bedrock, or permafrost. Gyttja accumulates as long as new material is added to the top of the column and the conditions are right for anaerobic degradation of the peat. Gyttja can form in layers reflecting changes in the environment[4] as with other sedimentary rock. Gyttja is the part of peat that forms coal, but it must be buried under thousands of meters for coalification to occur because it has to be hot enough to drive off the water it contains (see dopplerite). A good documented example of gyttja occurrence and its coverage change in time is the cultural heritage site in Puck Bay.[5]
ReferencesEdit
^"Coal formation". Pleasley Colliery website. Retrieved 12 December 2013.
^"Suprahumic". Suprahumic.unina.it. Portici, Italy: Federico II University. Retrieved 12 December 2013.
^(PDF). NASA. Archived from the original (PDF) on 27 May 2010. Retrieved 1 December 2012.
^De Klerk, P. . Archived from the original on 26 April 2012. Retrieved 1 December 2012.
^Pydyn, Andrzej; Popek, Mateusz; Kubacka, Maria; Janowski, Łukasz (8 May 2021). "Exploration and reconstruction of a medieval harbour using hydroacoustics, 3‐D shallow seismic and underwater photogrammetry: A case study from Puck, southern Baltic Sea". Archaeological Prospection. 28 (4): 527–542. doi:10.1002/arp.1823.
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gyttja, sometimes, gytta, from, swedish, gyttja, formed, from, partial, decay, peat, black, like, consistency, aerobic, digestion, peat, bacteria, forms, humic, acid, reduces, peat, first, oxygenated, metre, generally, metre, peat, column, peat, buried, under,. Gyttja sometimes gytta 1 from Swedish gyttja is a mud formed from the partial decay of peat It is black and has a gel like consistency Aerobic digestion of the peat by bacteria forms humic acid 2 and reduces the peat in the first oxygenated metre generally 0 5 metre of the peat column As the peat is buried under new peat or soil the oxygen is reduced often by waterlogging and further degradation by anaerobic microbes anaerobic digestion can produce gyttja The gyttja then slowly drains to the bottom of the column 3 It pools at the bottom of the peat column about 10 metres 33 ft below the surface or wherever it is stopped by e g compacted soil peat bedrock or permafrost Gyttja accumulates as long as new material is added to the top of the column and the conditions are right for anaerobic degradation of the peat Gyttja can form in layers reflecting changes in the environment 4 as with other sedimentary rock Gyttja is the part of peat that forms coal but it must be buried under thousands of meters for coalification to occur because it has to be hot enough to drive off the water it contains see dopplerite A good documented example of gyttja occurrence and its coverage change in time is the cultural heritage site in Puck Bay 5 References Edit Coal formation Pleasley Colliery website Retrieved 12 December 2013 Suprahumic Suprahumic unina it Portici Italy Federico II University Retrieved 12 December 2013 peteet 03 PDF NASA Archived from the original PDF on 27 May 2010 Retrieved 1 December 2012 De Klerk P A pollen diagram from a small kettle hole near Horst northern Vorpommern NE Germany Archived from the original on 26 April 2012 Retrieved 1 December 2012 Pydyn Andrzej Popek Mateusz Kubacka Maria Janowski Lukasz 8 May 2021 Exploration and reconstruction of a medieval harbour using hydroacoustics 3 D shallow seismic and underwater photogrammetry A case study from Puck southern Baltic Sea Archaeological Prospection 28 4 527 542 doi 10 1002 arp 1823 External links EditHow Swamps Produce Coal nbsp This material related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Gyttja amp oldid 1178728863, wikipedia, wiki, book, books, library,
