Rock Fertilizers as an Alternative to Conventional Fertilizers: The Use of Basalt from the Cameroon Volcanic Line for Maize Farming on Ferralitic Soils

Geotherapy ◽  
2014 ◽  
pp. 475-488
Keyword(s):  
Cameroon Volcanic Line

Fracture network mapping using remote sensing in three crater lakes environments of the Cameroon volcanic line (central Africa)

2021 ◽  
Vol 14 (6) ◽  
Author(s):  
Marthe Mbond Ariane Gweth ◽  
Jorelle Larissa Meli’i ◽  
Valentin Oyoa ◽  
Diab Ahmad Diab ◽  
Daniel Herve Gouet ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Central Africa ◽  
Fracture Network ◽  
Crater Lakes ◽  
Cameroon Volcanic Line ◽  
Network Mapping

Probabilistic seismic hazard assessment for the main cities along the continental section of the Cameroon volcanic line

2021 ◽  
Vol 14 (9) ◽  
Author(s):  
Etoundi Delair Dieudonné Ndibi ◽  
Eddy Ferdinand Mbossi ◽  
Nguet Pauline Wokwenmendam ◽  
Bekoa Ateba ◽  
Théophile Ndougsa-Mbarga
Keyword(s):  
Seismic Hazard ◽  
Hazard Assessment ◽  
Seismic Hazard Assessment ◽  
Probabilistic Seismic Hazard Assessment ◽  
Probabilistic Seismic Hazard ◽  
Cameroon Volcanic Line

scholarly journals Lithospheric mantle refertilization by DMM-derived melts beneath the Cameroon Volcanic Line—a case study of the Befang xenolith suite (Oku Volcanic Group, Cameroon)

2021 ◽  
Vol 176 (5) ◽  
Author(s):  
Sylvin S. T. Tedonkenfack ◽  
Jacek Puziewicz ◽  
Sonja Aulbach ◽  
Theodoros Ntaflos ◽  
Mary-Alix Kaczmarek ◽  
...  
Keyword(s):  
Lithospheric Mantle ◽  
Size Variation ◽  
African Plate ◽  
Cameroon Volcanic Line ◽  
Origin And Evolution ◽  
Volcanic Group ◽  
Cenozoic Volcanism ◽  
Composition Of Minerals ◽  
Ree Patterns

AbstractThe origin and evolution of subcontinental lithospheric mantle (SCLM) are important issues of Earth’s chemical and physical evolution. Here, we report detailed textural and chemical analyses on a mantle xenolith suite from Befang (Oku Volcanic Group, Cameroon Volcanic Line), which represents a major tectono-magmatic structure of the African plate. The samples are sourced from spinel-facies mantle and are dominated by lherzolites. Their texture is cataclastic to porphyroclastic, and foliation defined by grain-size variation and alignment of spinel occurs in part of peridotites. Spinel is interstitial and has amoeboidal shape. Clinopyroxene REE patterns are similar to those of Depleted MORB Mantle (DMM) except LREEs, which vary from depleted to enriched. The A-type olivine fabric occurs in the subset of one harzburgite and 7 lherzolites studied by EBSD. Orthopyroxene shows deformation consistent with olivine. The fabric of LREE-enriched clinopyroxene is equivalent to those of orthopyroxene and olivine, whereas spinel and LREE-depleted clinopyroxene are oriented independently of host rock fabric. The textural, chemical and thermobarometric constraints indicate that the Befang mantle section was refertilised by MORB-like melt at pressures of 1.0–1.4 GPa and temperatures slightly above 1200–1275 °C. The olivine-orthopyroxene framework and LREE-enriched clinopyroxene preserve the protolith fabric. In contrast, the LREE-depleted clinopyroxene, showing discordant deformation relative to the olivine-orthopyroxene protolith framework, and amoeboidal spinel crystallized from the infiltrating melt. The major element and REEs composition of minerals forming the Befang peridotites indicate subsequent reequilibration at temperatures 930–1000 °C. This was followed by the formation of websterite veins in the lithospheric mantle, which can be linked to Cenozoic volcanism in the Cameroon Volcanic Line that also brought the xenoliths to the surface. This study therefore supports the origin of fertile SCLM via refertilization rather than by extraction of small melt fractions, and further emphasizes the involvement of depleted melts in this process.

Pyroxenite in the mantle source of basanites at the Youkou maar, Adamawa Volcanic Massif (Cameroon Volcanic Line, West Africa)

2021 ◽  
Vol 583 ◽  
pp. 120478
Author(s):  
Patrick Merlin Wagsong Njombie ◽  
Robert Temdjim ◽  
Nicaise Blaise Ngongang Tchuimegnie ◽  
Stephen F. Foley ◽  
François Xavier Onana Mebara
Keyword(s):  
West Africa ◽  
Mantle Source ◽  
Cameroon Volcanic Line

scholarly journals Validation of gravity data from the geopotential field model for subsurface investigation of the Cameroon Volcanic Line (Western Africa)

2018 ◽  
Vol 70 (1) ◽  
Author(s):  
Jean Marcel ◽  
Jean Marcel Abate Essi ◽  
Philippe Njandjock Nouck ◽  
Oumarou Sanda ◽  
Eliézer Manguelle-Dicoum
Keyword(s):  
Field Model ◽  
Gravity Data ◽  
Cameroon Volcanic Line ◽  
Western Africa ◽  
Subsurface Investigation ◽  
Geopotential Field

scholarly journals Perception of Non-migrant Communities to Geo-hazard Threats in the Mount Cameroon Volcanic Region

2020 ◽  
pp. 70-83
Author(s):  
Sunday Shende Kometa ◽  
Kang Edwin Mua
Keyword(s):  
Sampling Technique ◽  
Community Safety ◽  
Government Officials ◽  
Cameroon Volcanic Line ◽  
Migrant Communities ◽  
Secondary Sources ◽  
Volcanic Region ◽  
Mount Cameroon ◽  
Traditional Authorities ◽  
Migrant Households

Whilst the issue of migration has received widespread and international debates on the geometric number of people displaced daily from one region to another, the environmental unfriendliness, socio-economic and political situations have been accused for the progressive migrant trend in most parts of the world. Bearing in mind these unprecedented situations, the tendency had always been the decision to migrate or stay to cope with adverse situation. It is against these mix feelings that the study investigates the perception of non-migrant communities to geo-hazard threats along the Mount Cameroon Volcanic Line (CVL). The study made use of both primary and secondary sources of data. Interviews were conducted with some traditional authorities, officials of the Limbe Botanic Garden, government officials and municipal authorities on the environmental impacts associated with the decision of the non-migrants in vulnerable zones. From the interview conducted a representative survey of households was then undertaken to gather the opinion of non-migrant households within the geo-hazard environment. This was aided by the use of some 120 questionnaires distributed to on-spot households exposed to geo-hazards within the Mount Cameroon mobile region. 120 questionnaires were administered and distributed to 5 sampled communities using random a sampling technique. The Mount Cameroon Volcanic Region alongside the location of communities were mapped out using ArcGIS. The Pearson Product Moment Correlation results revealed that communities have strong perception of geo-hazards despite the threats. About 80% of the communities perceived the occurrence of such hazards as mixed blessings especially the associated benefits from fertile volcanic and alluvial soils as well as floodwaters in depressions used for agricultural activities. The study further states that the myths of households to geohazard occurrence kills the science and technology as well as the resilient strategies to such geo-hazards. While the socio-cultural mechanism remains a winding driver of on-spot location in hazard-prone zones, the future of community safety should not undermine human knack responses to geo-hazards. The study recommends proper planning and adaptive measures along this volcanic line such that the traditional and cultural myths of the communities should be integrated with the modern and technological structures to resist or minimize the effects of nature on the non-migrant communities within the flanks of the Cameroon Volcanic Line.

Evaluation of groundwater quality and its suitability for drinking, domestic, and agricultural uses in the Banana Plain (Mbanga, Njombe, Penja) of the Cameroon Volcanic Line

2011 ◽  
Vol 33 (6) ◽  
pp. 559-575 ◽  
Author(s):  
Andrew Ako Ako ◽  
Jun Shimada ◽  
Takahiro Hosono ◽  
Kimpei Ichiyanagi ◽  
George Elambo Nkeng ◽  
...  
Keyword(s):  
Groundwater Quality ◽  
Cameroon Volcanic Line ◽  
Banana Plain

Olivine chemistry from Cameroon: evidence of carbonate metasomatism along the ocean-continental boundary of the Cameroon volcanic line

2019 ◽  
Vol 114 (1) ◽  
pp. 57-70
Author(s):  
Caroline N. Ngwa ◽  
Bless N. Shu ◽  
Benoît J. Mbassa ◽  
Festus T. Aka ◽  
Pauline N. Wokwenmendam
Keyword(s):  
Cameroon Volcanic Line
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