FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3163437318> ?p ?o ?g. }

• W3163437318 endingPage "104220" @default.
• W3163437318 startingPage "104220" @default.
• W3163437318 abstract "The study of Colomines area (eastern Cameroon) is designed to furnish petrological, mineralogical, geochemical and K-Ar data on granitoids in order to discuss the thermodynamic conditions of crystallization of different magmas, the magma series and differentiation processes, the characteristics of magmas’ sources and the geodynamic implications. The Colomines area is made up of four intrusive sets (heterogeneous granodiorites and their mafic enclaves, mafic plutonic suite (MPS), porphyritic biotite granites, Ms-Bt granites). Mineralogical assemblage is constant in MPS and mafic enclaves (Cpx+Hbl+Bt+Pl+Qtz+Op+Sph+Zrn+Ap), and granodiorite and granites sets (Hbl+Bt+Ms+Pl+Kfs+Op+Sph+Zrn+Ap), except the leucocratic Ms-Bt granites which are amphibole-free. Amphibole in diorite (MPS) and heterogeneous granodiorite has a composition of edenite and ferroedenite, respectively, whereas biotite composition varies with an increase of Fe content from basic to acidic rocks. Concomitantly, plagioclase show an increase of albite component. Crystallization of magmas started at great depths >22 km but the coexistence of heterogeneous granodiorites, MPS plutonic suite rocks, porphyritic biotite-granites and Ms-Bt granites at the same crustal level indicates that magmas migrated upwards and emplaced at a depth <4.5 km, in the upper crust. Chemical analyses show that all rocks are magnesian except ferroan Ms-Bt granites and a few samples of microgranites and porphyritic granites. Granodiorites, few monzonites of MPS and all granites are peraluminous whereas mafic enclaves in heterogeneous granodiorites are metaluminous. Heterogeneous granodiorites, gabbros and diorites of the MPS are calcic and calc-alkalic while other rock types are alkali-calcic and alkalic. Porphyritic granites and Ms-Bt granites trend from calc-alkaline to shoshonitic series. It is suggested that a fractional crystallization process may have contributed to the transition from blind primary magmas to these evolved granitoids. However, each group of rocks does not correspond to a magmatic sequence resulting from a single parent magma by fractional crystallization. They are rather indicative of the heterogeneity of magmatic sources and complex melting processes. The granitoids and associated rocks of Colomines correspond to complex mixtures in varying proportions of magmas resulting from the melting of the subducted crust and associated sediments, the mantle wedge and the lower crust. Biotite and rock compositions typical of volcanic-arc and syn-collision-related granites, and the compositions of Ms-Bt granites typical of post-collisional granites point to an active continental margin setting. The Colomines area has recorded most of the main magmatic events of the Pan-African orogeny from ante-collisional D1 (e.g. > 640 Ma heterogeneous granodiorites of Kaleka hill), syn-collisional D2 (620-600 Ma migmatisation and anatexis: leucosomes of Kaleka hill), late collisional D3 (590-580 Ma MPS) to Post-collisional D4 (580-560 Ma porphyritic biotite granites and Mu-Bt granites) intrusions." @default.
• W3163437318 created "2021-05-24" @default.
• W3163437318 creator A5002165860 @default.
• W3163437318 creator A5015600971 @default.
• W3163437318 creator A5042395443 @default.
• W3163437318 creator A5049791648 @default.
• W3163437318 creator A5072802378 @default.
• W3163437318 date "2021-09-01" @default.
• W3163437318 modified "2023-09-24" @default.
• W3163437318 title "Four Pan-African plutonic sets of the Colomines gold district (East-Cameroon): Petrogenesis, K-Ar dating and geodynamic significance" @default.
• W3163437318 cites W1849348714 @default.
• W3163437318 cites W1965835831 @default.
• W3163437318 cites W1966161186 @default.
• W3163437318 cites W1968681946 @default.
• W3163437318 cites W1969859799 @default.
• W3163437318 cites W1976233827 @default.
• W3163437318 cites W1978676610 @default.
• W3163437318 cites W1980000874 @default.
• W3163437318 cites W1992829881 @default.
• W3163437318 cites W1995895009 @default.
• W3163437318 cites W1997778832 @default.
• W3163437318 cites W2001879807 @default.
• W3163437318 cites W2003288504 @default.
• W3163437318 cites W2011607179 @default.
• W3163437318 cites W2012117555 @default.
• W3163437318 cites W2014333968 @default.
• W3163437318 cites W2025264595 @default.
• W3163437318 cites W2025385157 @default.
• W3163437318 cites W2026638359 @default.
• W3163437318 cites W2029923666 @default.
• W3163437318 cites W2033885626 @default.
• W3163437318 cites W2036076135 @default.
• W3163437318 cites W2046961523 @default.
• W3163437318 cites W2049513905 @default.
• W3163437318 cites W2057702652 @default.
• W3163437318 cites W2060756965 @default.
• W3163437318 cites W2064037017 @default.
• W3163437318 cites W2065318640 @default.
• W3163437318 cites W2078105240 @default.
• W3163437318 cites W2080816345 @default.
• W3163437318 cites W2081507714 @default.
• W3163437318 cites W2081673195 @default.
• W3163437318 cites W2083186766 @default.
• W3163437318 cites W2083603004 @default.
• W3163437318 cites W2091354973 @default.
• W3163437318 cites W2091497984 @default.
• W3163437318 cites W2091775796 @default.
• W3163437318 cites W2095348500 @default.
• W3163437318 cites W2100411277 @default.
• W3163437318 cites W2103999221 @default.
• W3163437318 cites W2104610090 @default.
• W3163437318 cites W2105662998 @default.
• W3163437318 cites W2152331582 @default.
• W3163437318 cites W2157099954 @default.
• W3163437318 cites W2164468447 @default.
• W3163437318 cites W2166240011 @default.
• W3163437318 cites W2195128359 @default.
• W3163437318 cites W2322815188 @default.
• W3163437318 cites W2325034837 @default.
• W3163437318 cites W2329218778 @default.
• W3163437318 cites W2334025999 @default.
• W3163437318 cites W2520916961 @default.
• W3163437318 cites W2604853960 @default.
• W3163437318 cites W2611571865 @default.
• W3163437318 cites W2738424532 @default.
• W3163437318 cites W2740140487 @default.
• W3163437318 cites W2901469454 @default.
• W3163437318 cites W2956088254 @default.
• W3163437318 cites W2994817661 @default.
• W3163437318 cites W3006412269 @default.
• W3163437318 cites W3081427465 @default.
• W3163437318 cites W748826077 @default.
• W3163437318 cites W914496135 @default.
• W3163437318 doi "https://doi.org/10.1016/j.jafrearsci.2021.104220" @default.
• W3163437318 hasPublicationYear "2021" @default.
• W3163437318 type Work @default.
• W3163437318 sameAs 3163437318 @default.
• W3163437318 citedByCount "5" @default.
• W3163437318 countsByYear W31634373182021 @default.
• W3163437318 countsByYear W31634373182022 @default.
• W3163437318 crossrefType "journal-article" @default.
• W3163437318 hasAuthorship W3163437318A5002165860 @default.
• W3163437318 hasAuthorship W3163437318A5015600971 @default.
• W3163437318 hasAuthorship W3163437318A5042395443 @default.
• W3163437318 hasAuthorship W3163437318A5049791648 @default.
• W3163437318 hasAuthorship W3163437318A5072802378 @default.
• W3163437318 hasConcept C11872896 @default.
• W3163437318 hasConcept C120806208 @default.
• W3163437318 hasConcept C127313418 @default.
• W3163437318 hasConcept C151730666 @default.
• W3163437318 hasConcept C161509811 @default.
• W3163437318 hasConcept C167236342 @default.
• W3163437318 hasConcept C167284885 @default.
• W3163437318 hasConcept C17409809 @default.
• W3163437318 hasConcept C183222429 @default.
• W3163437318 hasConcept C193429443 @default.
• W3163437318 hasConcept C2777229588 @default.
• W3163437318 hasConcept C2778849375 @default.

• next