The Bangangte area belongs to the Cameroon Volcanic Line. The volcanic rocks exposure in the area consist of fine microlitic porphiritic Basalts which still poorly surveyed. Petrographically, the studied rocks are made up of minerals like plagioclase, clinopyroxene, olivine phenocrysts and a lot of opaque minerals within a very fine grained matrice. The Bangangte basalts are quartz normative free and are olivine, Diopside, Hypersthene normative. Alkaline (Na2O + K2O) contents vary from 2.247% to 5.46%. These rocks are low-Mg basalts with the Mg# values vary from 42.86 to 45.95 which are characteristic of primitive mantle source. The studied rocks are alkali to transitional basalts with Nb/Y ratio>1.5. Chondrite normalized spider diagram pattern of REE shows uniform patterns with enrichment in LREE and a relative depletion in HREE. While MORB normalized spider diagram pattern of multi elements reveals a negative anomaly with K2O, with enrichement in LILE and depletion in HREE. The Eu anomalies are positive to nulle and are typical of alkali basalts. The Bangangté transitional alkali basalts were formed in intraplate setting of continental part of the CVL. They are the products of partial melting of about 13% of an asthenosphere made up of garnet peridotite. Geochemically, the studied basalts are similar to alkali basalts from Mount Bamenda.
| Published in | Earth Sciences (Volume 4, Issue 6) |
| DOI | 10.11648/j.earth.20150406.18 |
| Page(s) | 266-274 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2015. Published by Science Publishing Group |
Bangangte, CVL, Alkali to Transitional Basalts, Asthenosphere, Garnet Peridotite
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APA Style
Pierre Wotchoko, Joëlle Flore Tene Djoukam, Gus Djibril Kouankap Nono, Patrice Arnaud Kouske, David Guymollaire Nkouathio, et al. (2015). Petrographic and Geochemical Characterization of Basalts in Bangangte Area (West Cameroon): Implications on Their Source. Earth Sciences, 4(6), 266-274. https://doi.org/10.11648/j.earth.20150406.18
ACS Style
Pierre Wotchoko; Joëlle Flore Tene Djoukam; Gus Djibril Kouankap Nono; Patrice Arnaud Kouske; David Guymollaire Nkouathio, et al. Petrographic and Geochemical Characterization of Basalts in Bangangte Area (West Cameroon): Implications on Their Source. Earth Sci. 2015, 4(6), 266-274. doi: 10.11648/j.earth.20150406.18
AMA Style
Pierre Wotchoko, Joëlle Flore Tene Djoukam, Gus Djibril Kouankap Nono, Patrice Arnaud Kouske, David Guymollaire Nkouathio, et al. Petrographic and Geochemical Characterization of Basalts in Bangangte Area (West Cameroon): Implications on Their Source. Earth Sci. 2015;4(6):266-274. doi: 10.11648/j.earth.20150406.18
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Download@article{10.11648/j.earth.20150406.18,
author = {Pierre Wotchoko and Joëlle Flore Tene Djoukam and Gus Djibril Kouankap Nono and Patrice Arnaud Kouske and David Guymollaire Nkouathio and Solange Atenkia Fonkem},
title = {Petrographic and Geochemical Characterization of Basalts in Bangangte Area (West Cameroon): Implications on Their Source},
journal = {Earth Sciences},
volume = {4},
number = {6},
pages = {266-274},
doi = {10.11648/j.earth.20150406.18},
url = {https://doi.org/10.11648/j.earth.20150406.18},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20150406.18},
abstract = {The Bangangte area belongs to the Cameroon Volcanic Line. The volcanic rocks exposure in the area consist of fine microlitic porphiritic Basalts which still poorly surveyed. Petrographically, the studied rocks are made up of minerals like plagioclase, clinopyroxene, olivine phenocrysts and a lot of opaque minerals within a very fine grained matrice. The Bangangte basalts are quartz normative free and are olivine, Diopside, Hypersthene normative. Alkaline (Na2O + K2O) contents vary from 2.247% to 5.46%. These rocks are low-Mg basalts with the Mg# values vary from 42.86 to 45.95 which are characteristic of primitive mantle source. The studied rocks are alkali to transitional basalts with Nb/Y ratio>1.5. Chondrite normalized spider diagram pattern of REE shows uniform patterns with enrichment in LREE and a relative depletion in HREE. While MORB normalized spider diagram pattern of multi elements reveals a negative anomaly with K2O, with enrichement in LILE and depletion in HREE. The Eu anomalies are positive to nulle and are typical of alkali basalts. The Bangangté transitional alkali basalts were formed in intraplate setting of continental part of the CVL. They are the products of partial melting of about 13% of an asthenosphere made up of garnet peridotite. Geochemically, the studied basalts are similar to alkali basalts from Mount Bamenda.},
year = {2015}
}
TY - JOUR T1 - Petrographic and Geochemical Characterization of Basalts in Bangangte Area (West Cameroon): Implications on Their Source AU - Pierre Wotchoko AU - Joëlle Flore Tene Djoukam AU - Gus Djibril Kouankap Nono AU - Patrice Arnaud Kouske AU - David Guymollaire Nkouathio AU - Solange Atenkia Fonkem Y1 - 2015/12/07 PY - 2015 N1 - https://doi.org/10.11648/j.earth.20150406.18 DO - 10.11648/j.earth.20150406.18 T2 - Earth Sciences JF - Earth Sciences JO - Earth Sciences SP - 266 EP - 274 PB - Science Publishing Group SN - 2328-5982 UR - https://doi.org/10.11648/j.earth.20150406.18 AB - The Bangangte area belongs to the Cameroon Volcanic Line. The volcanic rocks exposure in the area consist of fine microlitic porphiritic Basalts which still poorly surveyed. Petrographically, the studied rocks are made up of minerals like plagioclase, clinopyroxene, olivine phenocrysts and a lot of opaque minerals within a very fine grained matrice. The Bangangte basalts are quartz normative free and are olivine, Diopside, Hypersthene normative. Alkaline (Na2O + K2O) contents vary from 2.247% to 5.46%. These rocks are low-Mg basalts with the Mg# values vary from 42.86 to 45.95 which are characteristic of primitive mantle source. The studied rocks are alkali to transitional basalts with Nb/Y ratio>1.5. Chondrite normalized spider diagram pattern of REE shows uniform patterns with enrichment in LREE and a relative depletion in HREE. While MORB normalized spider diagram pattern of multi elements reveals a negative anomaly with K2O, with enrichement in LILE and depletion in HREE. The Eu anomalies are positive to nulle and are typical of alkali basalts. The Bangangté transitional alkali basalts were formed in intraplate setting of continental part of the CVL. They are the products of partial melting of about 13% of an asthenosphere made up of garnet peridotite. Geochemically, the studied basalts are similar to alkali basalts from Mount Bamenda. VL - 4 IS - 6 ER -
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