A. Kagou DongmoUniversité de Dschang · department of Earth Science
A. Kagou Dongmo
PhD
About
43
Publications
24,646
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
622
Citations
Citations since 2017
Additional affiliations
August 1999 - present
Position
- Professor (Associate)
Description
- Study of the Cameroon Volcanic line activities and associated hazards
August 1999 - March 2015
Publications
Publications (43)
Mount Manengouba (MM) is one of the most voluminous volcanic apparatus along the Cameroon Volcanic Line. It is made up of two nested calderas notably, Eboga and Elengoum. Numerous landforms are found on the calderas floor, rim and external slopes. Among them, there is the Djeu-Seh Basin (DSB). It is located on the Eastern slopes of MM, in the Mbour...
Le sous-sol de Bamendjou étendue sur plusieurs faciès lithologiques n'a pas suffisamment révélé son contenu en dépit des travaux effectués dans le plateau Bamiléké à cause des limites dans la connaissance de son sous-sol. L'objectif de ces travaux vise à caractériser les formations géologiques et les structures linéamentaires présentes dans son sou...
The Ndop Plain, located along the Cameroon Volcanic Line (CVL), is a volcano-tectonic plain, formed by a series of tectonic movements, volcanic eruptions and sedimentation phases. Floods (annually) and landslides (occasionally) occur with devastating environmental effects. However, this plain attracts a lot of inhabitants owing to its fertile alluv...
The satisfaction of drinking potable water needs of rural populations has become a major issue for developing countries such as Cameroon. To overcome these difficulties, people make use of groundwater through the construction of boreholes which in most cases, registered many failures due to ignorance of the aquifer system. Thus, the present study a...
Field studies in Bambili locality (NE of Bamenda city, West-Cameroon), situated in the central part
of Cameroon Volcanic Line, have recently permitted us to identifier above the welded massive
lapilli tuff (mlT), remnant blocks (up to 6.5 x 11 m) of pyroclastic surge deposits. The latter are
characterized by well-sorted and distinctly stratified la...
Mount Manengouba, a volcanic complex emplaced between 1.5 and 0 Myr, occurs in the Cameroon Line, about 120 km NE of Mount Cameroon, Cameroon. Mount Manengouba culminates at 2,411 m and is characterized by important geomorphological features (geomorphosites), namely, two nested sub-circular calderas (Elengoum and Eboga), broken cones, crater lakes...
The Bamenda Volcano (BV) (2621 m) is a stratovolcano situated in the Cameroon Line (CL). BV includes
Mount Lefo (2534 m) which is situated on its southern slopes and contains one elliptical
caldera (3 × 4 km). This caldera is propitious to farming and breeding activity. Despite these profitable
assets, Lefo caldera (LC) is an amphitheater of the oc...
Mount Manengouba is a volcanic complex, age between 1.5 and 0 Myr, situated in the Cameroon Line in Cameroon, approximately 120 km NE of Mount Cameroon. It comprises some important geomorphological features, of geoheritage significance, i.e., geomorphosites, namely, two nested sub-circular calderas, broken cones, crater lakes (Female Lake, Male Lak...
Pyroclastic deposits constitute major components of explosive volcanic activity. To help improve the safety of
the population faced with natural disasters, a study is carried out at Bambouto volcano with a view to map potential hazards related to pyroclastic flows. The Bambouto volcano is indeed considered to be still active since the recent discov...
Mounts Bamenda (600 km2) which constitute in volumetric importance the fourth largest volcano of the Cameroon Volcanic Line, are the NE extension of the Mounts Bambouto. This massif extends between 10°00'-10°30' East and 05°45'-06°10' North and culminates at 2621 m at Lake Bambili borders. Petrographic and geochemical studies (Kamgang et al., 2010)...
The ignimbrites of Mount Bamenda are generally made up of welded and non-welded
massive lapilli tuff and lithic breccias which contain lithic fragments of mainly trachytic nature and
accessorily scoriae, rhyolite, vitrophyre, granitic basement and carbonized woods. The textures of
ignimbrites are eutaxitic (characterized by black and/or white prefe...
Ignimbrite is the deposit of a pyroclastic density current rich in pumice and pumiceous
ash shards. Ignimbrites are commonly, but not necessarily, dominated by poorly sorted, welded
and non-welded massive lapilli-tuff (mLT); although the architecture of a typical ignimbrite sheet
is made up of various massive and stratified pumiceous lithofacies as...
Bamenda volcano (BV) is a volcanic complex built between 27.4 and 0.36 Myr (Kamgang et
al., 2010). It occurs in the Cameroon Volcanic Line, stretching over N30°E axis; precisely between
Mount Bambouto and Mount Oku. BV is made up of two main calderas: Santa-Mbu and Lefo caldera.
The Lefo caldera (LC) and its surroundings constitute our priority in...
Neoproterozoic formations of Pala region are made up of volcanoclastic and plutonic rocks. They were affected by a NE-SW deformation, marked by lineaments extracted from satellite image. Tectonic structure of those formations was probably related to the closure of Gouyegoundoum Basin. This structure would be the extension of tectonic structures of...
Neoproterozoic formations of Pala region are made up of volcanoclastic and plutonic rocks. They were affected by a NE-SW deformation, marked by lineaments extracted from satellite image. Tectonic structure of those formations was probably related to the closure of Gouyegoundoum Basin. This structure would be the extension of tectonic structures of...
The studies realized in Bambouto and Bamenda volcanoes highlight the volumetric importance of ignimbritic formations that cover about 180 km2 of the massifs with thickness between 150 and 200 m. Their massive lapilli tuff (mlT) and massive lithic breccias (mlBr) facies are made up of various natures of lithic fragments (mainly trachytic) and have s...
Basaltic dyke swarms in the southern continental part of the Cameroon Volcanic Line (Bangangte, Dschang, Manjo areas) are tholeiitic in composition with 46 to 50 wt.% SiO 2 and have moderate Mg-numbers (53–59), medium TiO 2 contents (1.48–2,05 wt.%), and flat to mildly enriched incompatible trace element patterns. Comparison with trace element patt...
The Cameroon Volcanic Line stretches NE-SW for 1500 km from Lake Chad to the Gulf of Guinea. It contains numerous volcanic features that have formed beautiful landscapes.
Some volcanoes are active: (i) Mount Cameroon, a huge stratovolcano (4,095 m) that last erupted in 1999 and 2000; (ii) Lake Nyos, which emitted toxic carbon dioxide gas in 1986,...
RÉSUMÉ Le travail effectué concerne l'application de la télédétection en géologie structurale. L'analyse, les traitements des images satellitaires SPOT et Landsat ont révélé des structures linéaires ou linéaments que nous avons utilisé pour identifier les différentes formations géo-logiques de Léré. Ces données ont conduit à l'élaboration de la car...
At the north-eastern flank of Mount Bambouto, a lateral cone, the Totap volcano, is dated at 0.480 ± 0.014 Ma, which corresponds to the most recent activity of this area. The lava is a basanite similar to the older basanites of Mount Bambouto. Two new datations of the lavas of the substratum are 11.75 ± 0.25 Ma, and 21.12 ± 0.45 Ma. A synthetic rev...
At the north-eastern flank of Mount Bambouto, a lateral cone, the Totap volcano, is dated at 0.480 ± 0.014 Ma, which corresponds to the most recent activity of this area. The lava is a basanite similar to the older basanites of Mount Bambouto. Two new datations of the lavas of the substratum are 11.75 ± 0.25 Ma, and 21.12 ± 0.45 Ma. A synthetic revi...
: Mount Bambouto is a polygenic stratovolcano of the Cameroon Volcanic Line, built between 21 Ma and 4.5 Ma. It is situated approximately 200 km NE of Mount Cameroon, between 09° 55′ and 10°15′ longitude east and, 05°25′ and 05°50′ latitude north. The volcano covers an area of 500 km2 and culminates at 2740 m at Mélétan dome and bears a collapsed c...
The lavas of the Mount Cameroon, a Plio-Quaternary stratovolcano and the most important volcano along the Cameroon Volcanic
Line (CVL), constitute a weakly differentiated alkaline series: mainly comprising basanites as well as alkaline basalts, hawaiites
and mugearites. Ultramafic xenoliths (1–5 × 0.5–4cm) of dunites, wehrlites and clinopyroxenites...
Mount Bambouto is polygenic stratovolcano of the Cameroon Volcanic Line, build between 21 Ma and 4,5Ma (Nkouathio et al., 2008). It is situated at about 200 km NE of mount Cameroon, at 09°55' and 10°15' East and, 05°25' and 05°50' Nord. This volcano covers an area of 500 Km2 and culminates at 2740 m at Meletan hill and bears a collapse caldera (13...
Tombel graben and Mounts Bambouto are two volcanic fields of the typical system of alternating graben and horst structure
of the Cameroon Volcanic Line. Tombel graben is a young volcanic field, whereas Mounts Bambouto horst is an old stratovolcano
with calderas. Volcanic products in both settings have a signature close to that of Ocean Island Basal...
2008. Utilisation des roches volcaniques pour la reminéralisation des sols ferrallitiques des régions tropicales. Cas des pyroclastites basaltiques du graben de Tombel (Ligne volcanique du Cameroun). Bull. Soc. vaud. Sc. nat. 91.1: 1-14. Le graben de Tombel (Ligne volcanique du Cameroun) a été le siège d'un volcanisme explosif récent (age env. 0.2...
The Bambouto Mountains, resting on a large Pan-African metamorphic horst of the Cameroon Line, lie between 9°57′ and 10°15′E and 5°27′ and 5°48′N in Western Cameroon. Two imbricated calderas (13×8km) are located at its summit area. This volcanic region is made up of a complex sequence of basalt, trachyte and phonolite lava flows and ignimbrites. Ne...
The Bambouto Mountain is a shield volcano, that lies between Longitudes 10^o and 10^o10'E and the Latitudes 5^o35' and 5^o45'N. It is part of the Cameroon Volcanic Line, and lies in the NE linear axis to Mts Cameroon and Manengouba. It is elliptic (45-50 km X 20-25 km) and bears two collaspsed calderas at its summit. Volcanic activity of this volca...
The mount Manengouba is a polygenic volcanic complex of the Cameroon line, which was built in the Quaternary, between 1.55 and 0 Ma, during three stages. The first stage, from 1.55 to 0.7 Ma, corresponds to the building of the Elengoum volcano. The second, between 0.7 and 0.56 Ma, points to the collapse of the Elengoum summit. The third, from 0.56...
The mount Manengouba is a polygenic volcanic complex of the Cameroon line, which was built in the Quaternary, between 1.55 and 0 Ma, during three stages. The first stage, from 1.55 to 0.7 Ma, corresponds to the building of the Elengoum volcano. The second, between 0.7 and 0.56 Ma, points to the collapse of the Elengoum summit. The third, from 0.56...
The mount Manengouba is a polygenic volcanic complex of the Cameroon line, which was built in the Quaternary, between 1.55 and 0 Ma, during three stages. The first stage, from 1.55 to 0.7 Ma, corresponds to the building of the Elengoum volcano. The second, between 0.7 and 0.56 Ma, points to the collapse of the Elengoum summit. The third, from 0.56...
Projects
Projects (4)
Cette étude a pour objectif la cartographie des linéaments de Bamendjou, Département des Hauts-plateaux, région de l'Ouest Cameroun. Bamendjou fait partir des Hauts Terres de l'Ouest Cameroun (HTOC) et de la Ligne Volcano-tectonique du Cameroun (LVC). Cette zone des HTOC est partagée à peu près inégalement par des basaltes, des granites et des mylonites. Cette étude est basée sur l'acquisition et le traitement d'une scène Landsat 7 ETM+ multispectrales et panchromique couvrant Bamendjou. En plus d'une étude géophysique réalisée sur 53 stations et utilisant les sondages électriques type schlumberger avec une longueur maximale de profil de 320m. Les cartes d'isoresistivités ont permis par interprétation des anomalies d'obtenir des linéaments géophysiques. Tandis que la scène Landsat7 ETM par traitement des filtres directionnels 0°, 45°, 90°, 135° et 180° ont permis avec des logiciels ENVI, Adobe et Rose.net de caractériser plusieurs lineaments du secteur d'étude. Du point de vue structural, 115 linéaments, soit 32 linéaments géophysiques et 73 linéaments par télédétection ont été cartographiés. Ces linéaments présentent tous deux directions majeures préférentielles NE-SW et NNE-SSW. Ces linéaments sont susceptibles d'être des bons couloirs de minéralisation et des traceurs des écoulements des eaux de surface. Ces travaux confirment bien que la structurale est l'anti-chambre de l'hydrogéologie et de la métallogénie..
Cette étude a pour objectif la cartographie des nappes d'eau souterraines de Bamendjou à partir d'une étude géophysique basée sur 53 sondages électriques verticaux type schlumberger réalisés dans la partie Sud-ouest de Bamendjou. Ce qui a permis de mette en évidence deux types aquifères: un aquifère d'alterite ou interstitiel circulant sous les couches latéritiques et les couches argileuses entre 9 et 25m et un aquifère fissural circulant dans les niveaux fissurés du faciès volcaniques autour de 100m.. En plus, des types d'aquiferes mis en évidence dans le secteur d'étude. Nous avons aussi caractérisé les formations aquifères et leur position dans le sous-sol.
Ce travail avait pour objectif principal de réaliser la carte géotechnique synthétique à usage multiple de Bamendjou (Ouest, Cameroun).
Il s'agit spécifiquement de :
▪faire une étude pétrographique des formations géologiques de la zone d'étude;
▪faire une étude morpho-structurale des sols de la zone d'étude;
▪cartographier les propriétés électriques du sol et sous-sol;
▪étudier les conditions hydrogéologiques de la zone;
▪étudier les accidents tectoniques de la zone d'étude
