Výsledky vyhledávání - "Joseph Legrand Tchop"

Magmatism of the Beka Volcanic Massifs (Cameroon Volcanic Line, West-Central Africa): New Petrographical and Mineralogical Data

Autor: Jacques Dili-Rake, Sahabo Aboubakar Abdoulaye, Joseph Legrand Tchop, Merlin Isidore Teitchou, Christian Mana Bouba, Oumarou Faarouk Nkouandou, Daouda Dawaï, Eddy Ferdinand Mbossi

Publikováno v: Journal of Geoscience and Environment Protection. 10:198-228

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0ba6f3c1b84a344469ae6eca5267d414
https://doi.org/10.4236/gep.2022.107013

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Dynamique et évolution du manteau supérieur sous le volcan du lac Nyos (ligne volcanique du Cameroun), documentées par des xénolithes de péridotite remontés par des basaltes alcalins

Autor: Merlin Isidore Teitchou, Joseph Legrand Tchop, Michel Grégoire, Eddy Ferdinand Mbossi, Pauline Wokwenmendam Nguet, Sahabo Aboubakar Abdoulaye, Ateba Bekoa

Publikováno v: International Journal of Geosciences
International Journal of Geosciences, 2022, 13, pp.438-463. ⟨10.4236/ijg.2022.136024⟩

International audience; Volcanic deposits from the lake Nyos contain ultramafic xenoliths: lherzolites, harzburgites and wehrlites, sometimes containing amphiboles and phlogopites. The lithospheric mantle beneath Nyos, as inferred from chemical diagr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0167cc603ea610d0ecf1b55235342c5
https://hal.science/hal-03826676/file/IJG_2022.pdf

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Geochemistry of Volcanic Rocks of Beka, North East of Ngaoundéré (Adamawa Plateau, Cameroon): Petrogenesis and Geodynamic Context

Autor: Bouba Christian Mana, Joseph Legrand Tchop, Benjamin Ntieche, Pauline Wokwenmendam Nguet, Eddy Ferdinand Mbossi

Publikováno v: Journal of Geological Research. 3

Beka area is situated in the Adamaoua Plateau of Cameroon in central Arica. Lavas in this area has not been studied before the present work.The volcanism of Beka is characterized by basalt, trachyte and phonolite domes and flows. The petrographic stu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aaabe059431b1f4399d755f8901da20e
https://doi.org/10.30564/jgr.v3i3.3325

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The Lahars of the South-East slope of Mount Cameroon: geological study, economic interest and impacts of their exploitation on the environment

Autor: Victor Metang, Benjamin Ntieche, Gaelle Nana, Joseph Legrand Tchop, Jacques Dili-Rake, Pauline Wokwenmendam Nguet, Bernard Tassongwa

Publikováno v: Volume: 2, Issue: 2 1-12
Turkish Journal of Geosciences

Mount Cameroon is the site of explosive eruptions with the emission of ash, slag and lava flows. Mudflows, known as Lahars, can also be observed. These Lahars are mainly found in the lower part of the south-eastern slope. The outcrops observed on thi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::321b3b4dc0f2feba8170353dfb96b49d
https://dergipark.org.tr/tr/pub/turkgeo/issue/66200/929327

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Four Pan-African plutonic sets of the Colomines gold district (East-Cameroon): Petrogenesis, K-Ar dating and geodynamic significance

Autor: Numbem Jacqueline Tchakounte, Charles Nkoumbou, Okia Mukete Kundu, Joseph Legrand Tchop, Fuh Calistus Gentry

Publikováno v: Journal of African Earth Sciences. 181:104220

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

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::48527205eb6935bf57d2b933617f8fbc
https://doi.org/10.1016/j.jafrearsci.2021.104220

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