Results 71 to 80 of about 141 (82)

Paragenetic sequences of carbonate and sulphide minerals of the Mamfe Basin (Cameroon): Indicators of palaeo-fluids, palaeo-oxygen levels and diagenetic zones

Journal of African Earth Sciences, 2013
Abstract The occurrence of evaporite minerals in the Mamfe Basin (Albian–Cenomanian) is considered to be an indicator of aridity and palaeo-saline waters. A detailed lithostratigraphic analysis of the Mamfe sedimentary basin-fill indicates the occurrence of carbonate and sulphide minerals in close association with halite and gypsum within the Manyu ...
James L Best
exaly   +2 more sources

Sedimentologic and palaeoenvironmental evolution of the Mamfe Cretaceous Basin (SW Cameroon): Evidence from lithofacies analysis, tectonics and evaporite minerals suite

Journal of African Earth Sciences, 2019
Abstract Lithofacies analysis, optical microscopic and X-ray diffraction approaches were employed to investigate basin-fill configuration and palaeodepositional environments of the Mamfe Cretaceous Basin in SW Cameroon. The asymmetric basin-fill comprises six lithofacies associations whose vertical architectures are influenced by early syn-rift, mid ...
Gabriel Ngueutchoua, James L Best
exaly   +2 more sources

The use of jointing to infer deformation episodes and relative ages of minor Cretaceous intrusives in the western part of Ikom – Mamfe basin, southeastern Nigeria

Journal of African Earth Sciences, 2016
Abstract The most fundamental joint sets in a region are those oriented normal to the fold axis (‘ac’- extension fractures) and those oriented parallel to the fold axis (‘bc’- tensile fractures). Four sets of joints were observed in deformed igneous intrusives of the study area, representing two phases of Cretaceous deformation.
Michael I ODÉN
exaly   +2 more sources

Artisanal sand exploitation from the Mamfe Sedimentary Basin, Cameroon and resultant impacts

International Journal of Business Intelligence and Data Mining, 2021
exaly   +2 more sources

The Mamfe Basin in the southern Benue trough extension between Cameroon and Nigeria: Gem origin and problem of litho-stratigraphic nomenclature and marine transgression

Acta Geochimica, 2023
Milan Stafford Tchouatcha, Augustin Désiré Balla Ondoa, Tchouatcha Milan Stafford   +2 more
exaly   +2 more sources

Sedimentary pyrite in carbonaceous shales of the Mamfe Cretaceous basin, SW Cameroon: Morphologies, composition, pyrite framboid size frequency distribution, and formation pathways

Journal of African Earth Sciences, 2022
James L Best
exaly   +2 more sources

Joint Studies In The Western Part Of Ikom-Mamfe Basin, Lower Benue Trough, Nigeria

Global Journal of Geological Sciences, 2023
The Ikom-Mamfe basin, also called the Mamfe embayment, is a bifurcation of the Benue trough in southeastern Nigeria and southwestern Cameroun. The basin is about 130km long, 60km wide basin and is filled with about 4km thick sedimentary rocks. Deformational events led to gentle folding of rocks in the basin and emplacement of magmatic rocks. Systematic
I Umagu, Charles, I Ugar, Samuel, I Murphy, Morod, Amah, Godwin, A Oyonga, Oyonga   +4 more
openaire   +2 more sources

Crustal structure of the Mamfe basin, West Africa, based on gravity data

Tectonophysics, 1991
Abstract The Mamfe basin is the smallest and most southerly of three side rifts associated with the Benue Trough. It extends 130 km east from the Benue Trough into Cameroon as far as the Cameroon Volcanic Line and until recently it was the only rift devoid of geophysical studies to indicate its crustal structure and mode of formation.
J.D. Fairhead, C.S. Okereke, J.M. Nnange
openaire   +1 more source

Geochemistry and genesis of brine emanations from Cretaceous strata of the Mamfe Basin, Cameroon

Journal of African Earth Sciences, 2002
Abstract The geochemistry of 5 salt springs in the southwestern Mamfe Basin was investigated in order to infer the mineral content of their source and to relate the genesis of the springs to the local geology. Field observations revealed that, they are cold springs (23–28 °C), and are composed of secondary brines that are neutral to alkaline with pH ...
E. Eseme, C.M. Agyingi, J. Foba-Tendo
openaire   +1 more source

New Insights into Neoproterozoic-Cretaceous Events in the Mamfe Basin (SW Cameroon, Central Africa): Evidence from Textural Analyses, U-Th Composition, and U-Pb Zircon Geochronology from Granitic Basement

Journal of Earth Science, 2021
Backscattered electron BSE-CL images, U-Th abundance, and U-Pb ages were obtained for zircons from the Nkogho granitic basement rocks cropping out in the Mamfe Basin (SW Cameroon). These data are used to characterize and classify each zircon, elucidate their geochemical traits.
Nguo S. Kanouo, Arnaud P. Kouské, David R. Lentz, Rose F. Yongué   +3 more
openaire   +1 more source