Journal ArticleDOI
2.09 Ga old eclogites in the Eburnian-Transamazonian orogen of southern Cameroon: Significance for Palaeoproterozoic plate tectonics
Denny Loose,Volker Schenk +1 more
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TLDR
The Nyong Complex of the Eburnian-Transamazonian orogen has been found to have a trace element pattern similar to those of mid-ocean ridge basalts, indicating that the precursor melts formed in a depleted mantle source as mentioned in this paper.About:
This article is published in Precambrian Research.The article was published on 2018-01-01. It has received 92 citations till now. The article focuses on the topics: Craton & Eclogite.read more
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Toward an integrated model of geological evolution for NE Brazil-NW Africa: The Borborema Province and its connections to the Trans-Saharan (Benino-Nigerian and Tuareg shields) and Central African orogens
Fabrício de Andrade Caxito,Lauro Cézar Montefalco de Lira Santos,Carlos E. Ganade,Abderrahmane Bendaoud,El-Hocine Fettous,Merlain Houketchang Bouyo +5 more
TL;DR: The Borborema Province of NE Brazil and the geological provinces of NW Africa (the Trans-Saharan Orogen consisted of the Tuareg and Benino-Nigerian shields and the Central African Orogen of Cameroon, Chad, and Central African Republic) are complex geological regions with superposition of distinct deformational, metamorphic and magmatic events and final structural configuration during the Brasiliano/Pan-African Orogeny.
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Eclogite facies metabasites from the Paleoproterozoic Nyong Group, SW Cameroon: Mineralogical evidence and implications for a high-pressure metamorphism related to a subduction zone at the NW margin of the Archean Congo craton
TL;DR: In this article, a clockwise P-T path with nearly isothermal decompression is deduced from mineral zoning and textural relationships characterized by mineral recrystallization and multi-layered coronitic overgrowths of plagioclase and clinopyroxene surrounding garnet porphyroblasts.
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Geochemical constraints on the origin and tectonic setting of the serpentinized peridotites from the Paleoproterozoic Nyong series, Eseka area, SW Cameroon
Philomene Nga Essomba Tsoungui,Sylvestre Ganno,Evine Laure Tanko Njiosseu,Jean Lavenir Ndema Mbongue,Brice Kamguia Woguia,Landry Soh Tamehe,Landry Soh Tamehe,Jonas Didero Takodjou Wambo,Jean Paul Nzenti +8 more
TL;DR: The Eseka serpentinized peridotites are mantle residues that suffered a high degree of partial melting in a subduction-related environment, especially in Supra Subduction Zone setting as mentioned in this paper.
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Depositional age and tectonic environment of the Gouap banded iron formations from the Nyong group, SW Cameroon: Insights from isotopic, geochemical and geochronological studies of drillcore samples
Landry Soh Tamehe,Landry Soh Tamehe,Chongtao Wei,Sylvestre Ganno,Carlos Alberto Rosière,Jean Paul Nzenti,Chesther Gatsé Ebotehouna,Guanwen Lu +7 more
TL;DR: The discovery of the Gouap banded iron formations (BIFs)-hosted iron mineralization in the northwestern of the Nyong Group (Ntem Complex) in southwestern Cameroon provides unique insights into the geology of this region.
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The global tectonic context of the ca. 2.27-1.96 Ga Birimian Orogen – Insights from comparative studies, with implications for supercontinent cycles
TL;DR: In this article, the Birimian Orogen is considered to have formed in a plate tectonic setting similar to that which currently characterizes SE Asia, with the orogenic system forming in a wedge-shaped complex plate boundary zone, bordered to the north and south by continental blocks and opening up to face a major oceanic basin.
References
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Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology
R.H. Steiger,E. Jäger +1 more
TL;DR: The IUGS Subcommission on Geochronology (FOOTNOTE 4) as discussed by the authors recommended the adoption of a standard set of decay constants and isotopic abundances in isotope geology.
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Three natural zircon standards for u‐th‐pb, lu‐hf, trace element and ree analyses
M. Wiedenbeck,P. Allé,Fernando Corfu,William L. Griffin,M. Meier,F. Oberli,A. von Quadt,J.C. Roddick,W. Spiegel +8 more
TL;DR: In this paper, the results of a study to develop natural zircon geochemical standards for calibrating the U-(Th)-Pb geochronometer and Hf isotopic analyses are reported.
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Chemical differentiation of the Earth: the relationship between mantle, continental crust, and oceanic crust
TL;DR: In this paper, the average chemical compositions of the continental crust and the oceanic crust (represented by MORB), normalized to primitive mantle values and plotted as functions of the apparent bulk partition coefficient of each element, form surprisingly simple, complementary concentration patterns.