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Kibish Formation
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all geography including DSDP/ODP Sites and Legs
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simians (3)
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Primary terms
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Africa
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East Africa
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Afar Depression (4)
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Ethiopia
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Awash Valley (1)
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Hadar (1)
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Omo River (2)
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Omo Valley (3)
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Ethiopian Rift (4)
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Kenya
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Kenya Rift valley (1)
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Lake Magadi (1)
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Lake Turkana (3)
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Somali Republic (1)
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Tanzania
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Laetoli (1)
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Olduvai Gorge (3)
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Turkana Basin (7)
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East African Lakes
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Lake Magadi (1)
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Lake Turkana (3)
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East African Rift (8)
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Southern Africa
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biogeography (2)
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Koobi Fora Formation (5)
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Omo Group (4)
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middle Pleistocene (1)
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upper Pleistocene
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Eemian (1)
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Shungura Formation (5)
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Paleolithic
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Tertiary
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Neogene
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lower Pliocene (1)
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upper Pliocene (1)
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Paleogene
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Eocene
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Bridger Formation (1)
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lower Eocene
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Wind River Formation (1)
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upper Cenozoic
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Villafranchian (1)
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Chordata
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Vertebrata
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Tetrapoda
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Mammalia
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Theria
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Eutheria
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Carnivora
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Fissipeda
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Felidae
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Panthera (1)
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Primates
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Hominidae
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Australopithecinae
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Australopithecus (1)
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Homo
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Homo sapiens (2)
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simians (3)
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geochemistry (1)
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geochronology (4)
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geomorphology (2)
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igneous rocks
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volcanic rocks
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basalts (3)
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glasses (1)
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pyroclastics
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pumice (4)
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tuff (4)
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rhyolites (1)
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Indian Ocean
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Arabian Sea
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Gulf of Aden (1)
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isotopes
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Ar-40/Ar-39 (1)
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stable isotopes
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Mediterranean region (1)
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Mesozoic
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Cretaceous
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Middle Cretaceous (1)
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noble gases
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argon
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Ar-40/Ar-39 (1)
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paleoclimatology (8)
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Plantae
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algae
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diatoms (1)
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plate tectonics (1)
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Precambrian
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Proterozoic
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remote sensing (1)
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United States
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1-20 OF 24 RESULTS FOR
Kibish Formation
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Image
Stratigraphic relations between the Kibish Formation in its type area and a... Open Access
in Gigantic lion, Panthera leo , from the Pleistocene of Natodomeri, eastern Africa
> Journal of Paleontology
Published: 09 November 2017
Figure 2 Stratigraphic relations between the Kibish Formation in its type area and at Natodomeri I, where KNM-ND 59673 was recovered.
Journal Article
Sequence of tuffs between the KBS Tuff and the Chari Tuff in the Turkana Basin, Kenya and Ethiopia Available to Purchase
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 01 January 2006
Journal of the Geological Society (2006) 163 (1): 185–204.
... the Omo–Turkana Basin at the time was low. Thus the record of climatic influence on deposition in the Omo–Turkana Basin, previously shown for the Kibish Formation (≤200 ka), extends at least to early Pleistocene time. 17 6 2005 14 12 2004 Fifteen different tuffs have been analysed...
Journal Article
Gigantic lion, Panthera leo , from the Pleistocene of Natodomeri, eastern Africa Open Access
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 09 November 2017
Journal of Paleontology (2018) 92 (2): 305–312.
...Figure 2 Stratigraphic relations between the Kibish Formation in its type area and at Natodomeri I, where KNM-ND 59673 was recovered. ...
Image
Map of the region near the Natodomeri fossil sites. Strata at these sites a... Open Access
in Gigantic lion, Panthera leo , from the Pleistocene of Natodomeri, eastern Africa
> Journal of Paleontology
Published: 09 November 2017
Figure 1 Map of the region near the Natodomeri fossil sites. Strata at these sites are at the same elevation as strata in the type area of the Kibish Formation in the NE corner of this map. Contours above 455 m are not shown.
Journal Article
L'evolution morpho-climatique plio-quaternaire de la basse vallee de l'Omo (Ethiopie) Available to Purchase
Publisher: Société Géologique de France
Published: 01 January 1979
Bulletin de la Société Géologique de France (1979) S7-XXI (3): 259–263.
...J. L. Ballais GeoRef, Copyright 2004, American Geological Institute. 1979 Africa Cenozoic cuestas East Africa erosion features Ethiopia fault scarps geomorphology Holocene Kibish Formation landform evolution lower Pleistocene Nakwas Neogene Omo River Omo Valley...
Journal Article
Using Radiometric Dating, Magnetostratigraphy, and Tephrostratigraphy to Calibrate Rates of Hominin Evolution in the East African Rift Available to Purchase
Journal: Elements
Publisher: Mineralogical Society of America
Published: 01 April 2023
Elements (2023) 19 (2): 88–95.
... - 168 , doi: 10.1016/j.quascirev.2016.09.020 Brown FH , McDougall I , Fleagle JG ( 2012 ) Correlation of the KHS Tuff of the Kibish Formation to volcanic ash layers at other sites, and the age of early Homo sapiens (Omo I and Omo II) . Journal of Human Evolution 63 : 577...
Image
( A ) Synthetic stratigraphic logs of the Kibish, Konso, and Herto Bouri fo... Available to Purchase
in Using Radiometric Dating, Magnetostratigraphy, and Tephrostratigraphy to Calibrate Rates of Hominin Evolution in the East African Rift
> Elements
Published: 01 April 2023
Figure 4. ( A ) Synthetic stratigraphic logs of the Kibish, Konso, and Herto Bouri formations in Ethiopia, showing tephrostratigraphic correlations that provide minimum ages for the Homo sapiens fossils Omo I ( Vidal et al. 2022a ) and Herto ( Clark et al. 2003 ), and source eruptions (stars
Journal Article
Geochronology of the pre-KBS Tuff sequence, Omo Group, Turkana Basin Available to Purchase
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 01 March 2008
Journal of the Geological Society (2008) 165 (2): 549–562.
... c . 32 m above the base of the Shungura Formation ( de Heinzelin 1983 ). On the basis of glass analyses, Brown & Fuller (2008) showed that the Lokochot (= A) Tuff also occurs in the Nkalabong Formation ( Butzer 1971, 1976 ) in the Kibish area ( Fig. 1 ), and there it contains pumice clasts...
Image
Composite stratigraphic sections of the main formations in the Omo–Turkana ... Available to Purchase
in New single crystal 40 Ar/ 39 Ar ages improve time scale for deposition of the Omo Group, Omo–Turkana Basin, East Africa
> Journal of the Geological Society
Published: 01 March 2012
a significant hiatus, and that for the Nachukui Formation is derived from Harris et al. (1988) with minor modification. The sequence at Kanapoi, to the east of Loperot, is after Leakey et al. (1998) and Feibel (2003) , and the sequence at Kibish to the north of Lake Turkana is after Brown & Fuller
Journal Article
Diachronous dawn of Africa's Middle Stone Age: New 40 Ar/ 39 Ar ages from the Ethiopian Rift Available to Purchase
Journal: Geology
Publisher: Geological Society of America
Published: 01 December 2008
Geology (2008) 36 (12): 967–970.
..., 2008 ). The apparently oldest fossils assigned to H. sapiens are from the Kibish Formation in the Omo, bracketed by 40 Ar/ 39 Ar dates to between 104 ± 14 ka and 196 ± 4 ka, with an inferred age of 195 ± 10 ka ( McDougall et al., 2005 ). H. sapiens from Herto are dated by 40 Ar/ 39 Ar to between 160...
Journal Article
Response of the East African climate to orbital forcing during the last interglacial (130–117 ka) and the early last glacial (117–60 ka) Available to Purchase
Journal: Geology
Publisher: Geological Society of America
Published: 01 June 2001
Geology (2001) 29 (6): 499–502.
.... , Roeland , J.C. , and Guiot , J. , 1990 , Temperature and rainfall estimates for the past 40 000 years in equatorial Africa : Nature , v. 346 p. 347 – 348 . Butzer , K.W. , Brown , F.W. , and Thruber , D.L. , 1969 , Horizontal sediments of the lower Omo valley; the Kibish...
Journal Article
Precise 40 Ar/ 39 Ar geochronology for the upper Koobi Fora Formation, Turkana Basin, northern Kenya Available to Purchase
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 01 January 2006
Journal of the Geological Society (2006) 163 (1): 205–220.
... in appearance, others pale grey. These pumice clasts have abundant anorthoclase phenocrysts, readily separated for dating purposes. The Chibele Tuff is overlain by about 2 m of mudstone and followed upward disconformably by about 5 m of sediments assigned to the much younger Kibish Formation ( Butzer...
Journal Article
New single crystal 40 Ar/ 39 Ar ages improve time scale for deposition of the Omo Group, Omo–Turkana Basin, East Africa Available to Purchase
Ian McDougall, Francis H. Brown, Paulo M. Vasconcelos, Benjamin E. Cohen, David S. Thiede, Michael J. Buchanan
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 01 March 2012
Journal of the Geological Society (2012) 169 (2): 213–226.
... a significant hiatus, and that for the Nachukui Formation is derived from Harris et al. (1988) with minor modification. The sequence at Kanapoi, to the east of Loperot, is after Leakey et al. (1998) and Feibel (2003) , and the sequence at Kibish to the north of Lake Turkana is after Brown & Fuller...
Journal Article
Gombe Group basalts and initiation of Pliocene deposition in the Turkana depression, northern Kenya and southern Ethiopia Available to Purchase
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 01 January 2004
Geological Magazine (2004) 141 (1): 41–53.
... Foundation, the National Geographic Society, and the L. S. B. Leakey Foundation to F. H. Brown for work on the Koobi Fora and Nachukui formations, by grants to John G. Fleagle and F. H. Brown for work on the Kibish Formation, and by grants to Meave G. Leakey for work at Koobi Fora, Lothagam and Kanapoi...
Journal Article
The Dawn of Humanity: What Can Paleoanthropologists and Geoscientists Learn from One Another? Available to Purchase
Journal: Elements
Publisher: Mineralogical Society of America
Published: 01 April 2023
Elements (2023) 19 (2): 75–81.
... , pp 285 – 312 Brown FH , Fuller CR ( 2008 ) Stratigraphy and tephra of the Kibish Formation, southwestern Ethiopia . Journal of Human Evolution 55 : 366 - 403 , doi: 10.1016/j.jhevol.2008.05.009 Campisano CJ , Feibel CS ( 2008 ) Depositional environments...
Journal Article
Rift deflection, migration, and propagation: Linkage of the Ethiopian and Eastern rifts, Africa Available to Purchase
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 01 February 2000
GSA Bulletin (2000) 112 (2): 163–176.
... the region into four approximately north-south–trending, fault-bounded valleys comprising two or more basins ( Figs. 3 and 4 ). The Kibish basin marks the northward extent of the West Turkana rift of northern Kenya, which contains Eocene(?)–Oligocene to Pliocene volcanic strata interbedded...
Journal Article
Tectonic and Paleoclimatic Setting for Hominin Evolution in Eastern Africa Available to Purchase
Journal: Elements
Publisher: Mineralogical Society of America
Published: 01 April 2023
Elements (2023) 19 (2): 82–87.
... (Pangani), and southwestern Tanzania (Rukwa-Malawi) also show evidence for renewed faulting and exhumation at 60–45 Ma. The brown ellipse outlines an area of ~7-Ma magmatism and platform formation in the Indian Ocean between Africa and Madagascar. Nm indicates the Nyamuragira Volcano, and Ng indicates...
Journal Article
Desert speleothems reveal climatic window for African exodus of early modern humans Available to Purchase
Journal: Geology
Publisher: Geological Society of America
Published: 01 September 2007
Geology (2007) 35 (9): 831–834.
... that precipitation levels greater than 80 mm/yr could not have persisted for periods longer than tens to hundreds of years ( Amit et al., 2006 ). Thus, the wet episodes were too short to cause the development of calcite horizons in the soils but long enough to allow the formation of thin speleothem laminae...
Journal Article
Paleolakes of Eastern Africa: Zeolites, Clay Minerals, and Climate Available to Purchase
Journal: Elements
Publisher: Mineralogical Society of America
Published: 01 April 2023
Elements (2023) 19 (2): 96–103.
... ; Gebregiorgis et al. 2021 ), the Pleistocene Naivasha Basin, Kenya ( Trauth et al. 2001 ), and the Pliocene–Pleistocene Chemeron Formation of the Baringo Basin, Kenya ( Minkara 2017 ). Analcime indicates more saline conditions because it is favored by a higher Na/K ratio, typical of more saline conditions...
Journal Article
Precise dating of biotite in distal volcanic ash: Isolating subtle alteration using 40 Ar/ 39 Ar laser incremental heating and electron microprobe techniques Available to Purchase
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 May 2008
American Mineralogist (2008) 93 (5-6): 784–795.
... Ar experimental results from four tuff beds Isochron Analysis* Apparent Ages* Name (formation) mineral analysis type location n SUMS (N – 2) 40 Ar/ 36 Ari ± 2 σ Isochron Age (Ma) ± 2σ‡ average K/Ca ± 2σ MSWD Weighted Mean Age (Ma) ± 2σ‡ ±2σ§ ±2σ|| Notes...
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