SN Applied Sciences (Jul 2022)

Petrology of the meta-mafic rocks from the Lolodorf area, Nyong complex (Southwest Cameroon): implication for the origin and emplacement conditions

  • Eric José Messi Ottou,
  • Sylvestre Martial Ntomba,
  • Benjamin Ntieche,
  • Rufine Christelle Magnekou Takamte,
  • Salomon Bertrant Bisse,
  • François Ndong Bidzang,
  • Joseph Mvondo Ondoa

DOI
https://doi.org/10.1007/s42452-022-05089-7
Journal volume & issue
Vol. 4, no. 8
pp. 1 – 24

Abstract

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Highlights (1) The rocks of the study area consists of fine-grained garnet meta-mafic (FGM) and coarse-grained garnet meta-mafic (CGM) rocks presenting partial melting and metamorphic features characterizing the amphibolite-granulite facies transition; (2) Fine-grained garnet meta-mafic (FGM) have been reworked during Eburnean whereas coarse-grained garnet meta-mafic (CGM) formed at the Eburnean; (3) The partial melting and metamorphic peak occurred around the amphibolite-granulite facies transition between 2.7–14.89 kbar and 672–952 °C for the FGM and around 1.5–16.09 kbar and 631–909 °C for the CGM. Meta-mafic rocks protolith displays basaltic composition and emplaced at an active continental margin context under high oxidizing conditions.

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