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magadiite in the High Magadi Beds are filled with mud, silt and sand from overlying sediments. Their stratigraphic context reveals upward-shallowing cycles from mud to interlaminated mud-magadiite to magadiite in dm-scale units. The burrows were formed when the lake floor became fresher and oxygenated, after a period when magadiite precipitated in shallow saline waters. The burrows, probably produced by beetles, show that trace fossils can provide evidence for short-term (possibly years to decades) changes in the contemporary environment that might not otherwise be recognised or preserved physically or chemically in the sediment record.
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271:), the Magadi basin held a freshwater lake with many fish, whose remains are preserved in the High Magadi Beds, a series of lacustrine and volcaniclastic sediments preserved in various locations around the present shoreline. Evidence also exists for several older Pleistocene precursor lakes that were much larger than the present Lake Magadi. At times, Lake Magadi and
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in this arid region. Most hot springs lie along the northwestern and southern shorelines of the lake. During the rainy season, a thin (less than 1 m) layer of brine covers much of the saline pan, but this evaporates rapidly leaving a vast expanse of white salt that cracks to produce large polygons. A
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sp.), and birds including flamingos. Burrows discovered in outcrops of the High Magadi Beds (~25–9 ka) that predate the modern saline (trona) pan show that beetles and other invertebrates inhabit this extreme environment when conditions become more favourable. Burrows (cm-scale) preserved in
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Magadiite, a rare hydrous sodium-silicate mineral , was discovered about 50 years ago in sediments around Lake Magadi, a hypersaline alkaline lake fed by hot springs in the semi-arid southern Kenya Rift Valley. Today this harsh lacustrine environment excludes most organisms except microbial
282:. There are many varieties including bedded cherts that formed in the lake and intrusive dike-like bodies that penetrated through overlying sediments while the silica was soft. The most famous is the "Magadi-type chert", which formed from a sodium silicate mineral precursor
256:, inhabits the hot, highly alkaline waters of this lake basin and is commonly seen in some of the hot spring pools around the shoreline, where the water temperature is less than 45 °C.
518:
Eugster, H.P. 1980. Lake Magadi, Kenya, and its
Pleistocene precursors. In Nissenbaum, A. (Editor) Hypersaline brines and evaporitic environments. Elsevier, Amsterdam, pp. 195–232.
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that crosses the lake provides access to the area west of the lake (Nguruman
Escarpment). Recently accommodation for tourists is provided in air conditioned canvas tents.
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Behr, H.J. 2002. Magadiite and Magadi chert: a critical analysis of the silica sediments in the Lake Magadi Basin, Kenya. SEPM Special
Publication 73, p. 257-273.
454:"Animal bioturbation preserved in Pleistocene magadiite at Lake Magadi, Kenya Rift Valley, and its implications for the depositional environment of bedded magadiite"
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Jones, B.F., Eugster, H.P., and Rettig, S.L. 1977. Hydrochemistry of the Lake Magadi basin, Kenya. Geochimica et
Cosmochimica Acta, v. 41, p. 53-72.
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Eugster, H.P. 1970. Chemistry and origin of the brines from Lake Magadi, Kenya. Mineralogical
Society of America Special Paper, No. 3, p. 215-235.
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Buatois, Luis A.; Renaut, Robin W.; Owen, Richard
Bernhart; Behrensmeyer, Anna K.; Scott, Jennifer J. (2020-04-22).
242:(temperatures up to 86 °C) that discharge into alkaline "lagoons" around the lake margins, there being little
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Baker, B.H. 1958. Geology of the Magadi area. Report of the
Geological Survey of Kenya, 42, 81 pp.
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434:. a paleo lake once situated in the Kalahari desert in Botswana until 10,000 years ago.
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Not to be confused with the lake in
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Lake Magadi was not always so saline. Several thousand years ago (during the late
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Lake Magadi is also well known for its extensive deposits of siliceous
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Not to be confused with the former lake (paleolake) in
Botswana called
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in the north of Kenya, where the book and film are set.
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309:since December 2005. This factory produces
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275:were united as a single larger lake.
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413:Salt harvesting at lake Magadi
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963:Mount Kipipiri Forest Reserve
953:Lake Bogoria National Reserve
943:Kerio Valley National Reserve
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983:Mount Longonot National Park
426:Ngorongoro Conservation Area
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973:Lake Naivasha National Park
532:Slide show of aerial photos
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968:Kigio Wildlife Conservancy
948:Lake Baringo National Park
471:10.1038/s41598-020-63505-7
247:single species of fish, a
204:and is well known for its
30:Lake Kajiado County, Kenya
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1121:Endorheic lakes of Africa
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978:Hell's Gate National Park
958:Lake Nakuru National Park
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773:Hills and escarpments
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324:book of the same name
319:The Constant Gardener
301:township lies on the
993:Shompole Conservancy
269:African humid period
790:Nguruman Escarpment
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936:Conservation areas
795:Losiolo Escarpment
458:Scientific Reports
194:Kenyan Rift Valley
120:Kenyan Rift Valley
106:Show map of Africa
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780:Elgeyo Escarpment
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432:Lake Makgadikgadi
253:Alcolapia grahami
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76:Show map of Kenya
25:Lake Makgadikgadi
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223:formed by a
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208:, including
206:wading birds
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180:Surface area
1060:Aiyangiyang
805:Ngong Hills
764:Mount Suswa
464:(1): 6794.
401:Pink waters
273:Lake Natron
261:Pleistocene
240:hot springs
198:Lake Natron
190:Lake Magadi
152: /
127:Coordinates
100:Lake Magadi
70:Lake Magadi
36:Lake Magadi
18:Lake Magadi
1110:Categories
1075:Koobi Fora
851:Elmenteita
623:Kesses Dam
603:Elmenteita
593:Chew Bahir
439:References
377:Soda train
365:Soda Plant
307:Tata India
897:Ol Arabel
707:Volcanoes
618:Kanyaboli
536:Fotopedia
480:2045-2322
292:Alcolapia
284:magadiite
210:flamingos
1085:Lothagam
1065:Amboseli
1034:Naivasha
902:Perkerra
856:Naivasha
759:Longonot
744:Menengai
719:Namarunu
658:Victoria
638:Naivasha
613:Kamnarok
498:32321943
419:See also
339:causeway
311:soda ash
265:Holocene
116:Location
1080:Laetoli
1019:Marigat
1014:Kinyang
922:Turasha
907:Waseges
841:Bogoria
836:Baringo
826:Turkana
754:Olkaria
653:Turkana
588:Bogoria
583:Baringo
489:7176717
267:in the
263:to mid-
249:cichlid
140:36°16′E
1039:Magadi
1029:Gilgil
1024:Nakuru
1009:Kapedo
917:Malewa
912:Gilgil
882:Suguta
875:Rivers
866:Natron
861:Magadi
846:Nakuru
831:Logipi
749:Eburru
739:Korosi
729:Silali
643:Nakuru
633:Magadi
628:Logipi
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299:Magadi
225:graben
137:1°55′S
1070:Karsa
887:Kerio
819:Lakes
598:Chala
280:chert
236:trona
232:brine
171:Kenya
166:Basin
892:Molo
734:Paka
648:Sare
608:Jipe
494:PMID
476:ISSN
303:lake
202:soda
484:PMC
466:doi
389:Map
326:by
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