Composition and applied sedimentology of salt from brines of the Mamfe Basin, Cameroon

Eseme, E.; Abanda, Peter Azah; Agyingi, Christopher M.; Foba-Tendo, Josepha; Hannigan, Robyn

doi:10.1016/j.gexplo.2006.02.003

Cited by 8 publications

(3 citation statements)

References 26 publications

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“…1c; Offem et al, 2011). The pH of the lake water is circumneutral, and its moderately elevated conductivity of 86–120 µS/cm measured in 2008 and 2009 might reflect inputs from saline springs that are common in the Mamfe basin (Eseme et al, 2006; Offem et al, 2011; Njoh et al, 2015). Local soils are sandy, and the bedrock of the watershed includes lenses of salt and marl interbedded with shales, sandstones, and other sedimentary rocks (Ephraim, 2012; Njoh et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

On the Age and Origin of Lake Ejagham, Cameroon, and Its Endemic Fishes

et al. 2017

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Lake Ejagham is a small, shallow lake in Cameroon, West Africa, which supports five endemic species of cichlid fishes in two distinct lineages. Genetic evidence suggests a relatively young age for the species flocks, but supporting geologic evidence has thus far been unavailable. Here we present diatom, geochemical, mineralogical, and radiocarbon data from two sediment cores that provide new insights into the age and origin of Lake Ejagham and its endemic fishes. Radiocarbon ages at the base of the longer core indicate that the lake formed approximately 9 ka ago, and the diatom record of the shorter core suggests that hydroclimate variability during the last 3 millennia was similar to that of other lakes in Cameroon and Ghana. These findings establish a maximum age of ca. 9 cal ka BP for the lake and its endemic species and suggest that repeated cichlid speciation in two distinct lineages occurred rapidly within the lake. Local geology and West African paleoclimate records argue against a volcanic, chemical, or climatic origin for Lake Ejagham. Although not conclusive, the morphometry of the lake and possible signs of impact-induced effects on quartz grains are instead more suggestive of a bolide impact.

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Section: Introductionmentioning

confidence: 99%

On the Age and Origin of Lake Ejagham, Cameroon, and Its Endemic Fishes

et al. 2017

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“…Cameroonian coastal basins including Rio del Rey Basin and Douala/Kribi/Campo Basin have attracted earlier workers in exploration geology due to their economic importance in contrast to intracratonic basins as in the case of Mamfe Basin. Inferred Various depositional environments were inferred for the MSB, including fluvial, deltaic, lacustrine, marine and estuarine ( Petters, 1991 , 1995 ; Tanyileke et al., 1996 ; Tijani et al., 1996 ; Ajonina and Bassey, 1997 ; Ajonina et al., 1998 , 2001 ; Eyong, 2003 ; Eseme et al., 2006 ). Previous geochemical studies in Mamfe Basin are based on the brine emanations origins ( Eseme et al., 2002 ), grey black rutile of Nsanaragati ( Kanouo et al., 2012 ) and depositional setting and oxidation state ( Bokanda et al., 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Provenance, paleoweathering, depositional setting and paleoclimatic constraints of cretaceous and neogene deposits of The Mamfe Basin, southwest Cameroon

Bilobe

Eyong

Samankassou

2022

Heliyon

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“…Cameroonian coastal basins including Rio del Rey Basin and Douala/ Kribi/Campo Basin have attracted earlier workers in exploration geology due to their economic importance in contrast to intracratonic basins as in the case of Mamfe Basin. Inferred Various depositional environments were inferred for the MSB, including fluvial, deltaic, lacustrine, marine and estuarine (Petters, 1991(Petters, , 1995Tanyileke et al, 1996;Tijani et al, 1996;Ajonina and Bassey, 1997;Ajonina et al, 1998Ajonina et al, , 2001Eyong, 2003;Eseme et al, 2006). Previous geochemical studies in Mamfe Basin are based on the brine emanations origins (Eseme et al, 2002), grey black rutile of Nsanaragati (Kanouo et al, 2012) and depositional setting and oxidation state (Bokanda et al, 2018).…”

Section: Introductionmentioning

confidence: 99%