scholarly journals River geochemistry, chemical weathering, and atmospheric CO2consumption rates in the Virunga Volcanic Province (East Africa)

2015 ◽  
Vol 16 (8) ◽  
pp. 2637-2660 ◽  
Author(s):  
Charles M. Balagizi ◽  
François Darchambeau ◽  
Steven Bouillon ◽  
Mathieu M. Yalire ◽  
Thibault Lambert ◽  
...  
Keyword(s):  
East Africa ◽  
Chemical Weathering ◽  
Volcanic Province

scholarly journals Crustal structure surrounding the northern Malawi rift and beneath the Rungwe Volcanic Province, East Africa

2018 ◽  
Vol 215 (2) ◽  
pp. 1410-1426 ◽  
Author(s):  
David Borrego ◽  
Andrew A Nyblade ◽  
Natalie J Accardo ◽  
James B Gaherty ◽  
Cynthia J Ebinger ◽  
...  
Keyword(s):  
East Africa ◽  
Crustal Structure ◽  
Volcanic Province

scholarly journals Seismic Evidence for Plume- and Craton-Influenced Upper Mantle Structure Beneath the Northern Malawi Rift and the Rungwe Volcanic Province, East Africa

2018 ◽  
Vol 19 (10) ◽  
pp. 3980-3994 ◽  
Author(s):  
Ashley Grijalva ◽  
Andrew A. Nyblade ◽  
Kyle Homman ◽  
Natalie J. Accardo ◽  
James B. Gaherty ◽  
...  
Keyword(s):  
East Africa ◽  
Upper Mantle ◽  
Mantle Structure ◽  
Volcanic Province ◽  
Upper Mantle Structure

scholarly journals Fluoride ions in groundwater of the Turkana County, Kenya, East Africa

2021 ◽  
Author(s):  
Piotr Rusiniak ◽  
Klaudia Sekuła ◽  
Ondra Sracek ◽  
Piotr Stopa
Keyword(s):  
Drinking Water ◽  
East Africa ◽  
Chemical Weathering ◽  
Fluoride Ions ◽  
Standard Guideline ◽  
Groundwater Samples ◽  
Guideline Value ◽  
Speciation Modelling ◽  
High Concentrations ◽  
Dominant Cation

AbstractGroundwater samples were evaluated throughout Turkana County (Kenya, East Africa) while looking for drinking water sources. Some samples showed high concentrations of fluoride with values in the range of 0.15–5.87 mg/L. Almost 50% of the samples exceeded the WHO and Kenyan potable water standard guideline value of 1.5 mg/L for drinking water quality. The hydrogeochemical studies revealed that the dominant cation in water is Na+ and the dominant anion is HCO3− resulting in Na-HCO3 type of groundwater, followed by Ca/Mg-HCO3 or Na-SO4 and Na-Cl in a few cases. Speciation modelling revealed that the groundwater is undersaturated with respect to gypsum and anhydrite, mostly undersaturated with respect to fluorite (6 samples are at equilibrium), and supersaturated or at equilibrium with respect to calcite (CaCO3). Precipitation of calcite favours the dissolution of F-rich minerals in the alkaline medium. Simultaneously, groundwater is enriched with sodium and bicarbonate, probably as a result of chemical weathering of Na-feldspar. Investigated groundwater can be presumably used for drinking purposes from 17 wells, but a detailed investigation of other trace element concentrations is necessary.

Chronology of volcanism and rift basin propagation: Rungwe Volcanic Province, East Africa

1989 ◽  
Vol 94 (B11) ◽  
pp. 15785-15803 ◽  
Author(s):  
C. J. Ebinger ◽  
A. L. Deino ◽  
R. E. Drake ◽  
A. L. Tesha
Keyword(s):  
East Africa ◽  
Rift Basin ◽  
Volcanic Province

scholarly journals Lithospheric Control of Melt Generation Beneath the Rungwe Volcanic Province and the Malawi Rift, East Africa

2020 ◽  
Author(s):  
Emmanuel Njinju ◽  
D. Sarah Stamps ◽  
Kodi Neumiller ◽  
James Gallagher
Keyword(s):  
East Africa ◽  
Volcanic Province ◽  
Melt Generation

scholarly journals Lithospheric Control of Melt Generation Beneath the Rungwe Volcanic Province, East Africa

2020 ◽  
Author(s):  
Emmanuel A. Njinju ◽  
D. Sarah Stamps ◽  
James Gallagher ◽  
Kodi Neumiller
Keyword(s):  
East Africa ◽  
Volcanic Province ◽  
Melt Generation

scholarly journals Tomography-Based Convection and Melt Generation Beneath the Rungwe Volcanic Province, East Africa

2022 ◽  
Author(s):  
Emmanuel A. Njinju ◽  
D. Sarah Stamps ◽  
Tyrone O. Rooney ◽  
Estella A. Atekwana ◽  
Tahiry A Rajaonarison
Keyword(s):  
East Africa ◽  
Volcanic Province ◽  
Melt Generation
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