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| Berger, Julien, Diot, Hervé, Lo, Khalidou, Ohnenstetter, Daniel, Féménias, Olivier, Pivin, Marjorie, Demaiffe, Daniel, Bernard, Alain, Charlier, Bernard (2013) Petrogenesis of Archean PGM-bearing chromitites and associated ultramafic–mafic–anorthositic rocks from the Guelb el Azib layered complex (West African craton, Mauritania) Precambrian Research, 224. 612-628 doi:10.1016/j.precamres.2012.10.005 | Journal (article/letter/editorial) | | tic rocks from the Guelb el Azib
layered complex (West African craton, Mauritania)
Julien Berger a,∗...de Nantes, France
c
Université de Nouakchott, Mauritania
d
Centre de Recherches Pétrographiques et Géochimiques...The Archean Guelb el Azib layered complex (GAC) in the West African craton of Mauritania is composed...informations are from Potrel et al. (1998).
GAC: Guelb el Azib Complex.
(Polat et al., 2009, 2010; Windley...this study, we present new data on the Archean Guelb el Azib
complex, a new occurrence of layered anorthosite | 👁 Image
| | Journal (article/letter/editorial) | | co-genetic suite of samples from the Mauritanian Guelb el
Azib ultramafic-mafic-anorthosite complex (GAC),...the liquid. In this study, we investigate the Guelb el Azib
ultramafic-mafic-anorthosite Archean layered...igneous complex in the West African craton of
Mauritania (Figs. 1 and 2). Despite having been metamorphosed...deformation, the original stratigraphy of the Guelb el Azib
complex (GAC), comprising ultramafic cumulates...and sample description
2.1 The Guelb el Azib complex
The Guelb el Azib (GAC) is an Archaean sheet-like | 👁 Image
| | Journal (article/letter/editorial) | | (both granite and gabbro) dated at ca 2.73 Ga mark the end of the granulitic event. The granite
provides...indicate an origin by crustal reworking of the granite and negative eym2.v) value ( - 0 . 7 )
of the gabbro...reserved.
PII S0301-9268 ( 98 )00044-8
108
A. Potrel el aZ , Precamhrian Research 90 (199(~'2 107 117
I...to the east by the undeformed Upper Proterozoic
Atar formation. This area, previously mapped by
Barrare...sources.
The orthogneisses are intruded by the Guelb el
Azib granulitic gabbro which provided single
zircon | 👁 Image
| | Journal (article/letter/editorial) | | Structural Parameters
of Spinels from Amsaga (Mauritania)
Davide Lenaz 1, * ID , Henrik Skogby 2 , Nicola...spinels from
the Archean chromitites of Amsaga (Mauritania). The chemical and structural data testified...diffraction; Mössbauer spectroscopy;
Archean; Mauritania
1. Introduction
Chromium-bearing spinels are...the Archaean Guelb el Azib
layered complex (GAC; Amsaga Area, West African craton, Mauritania; Figure 1)...GAC: Guelb el Aziz
and the geochronological information are from Potrel (1996) [35]. GAC: Guelb el Aziz | 👁 Image
| Wainwright, Ashlea N., El Atrassi, Fatima, Debaille, Vinciane, Mattielli, Nadine (2019) Geochemistry and petrogenesis of Archean mafic rocks from the Amsaga area, West African craton, Mauritania. Precambrian Research, 324. 208-219 doi:10.1016/j.precamres.2019.02.005 | Journal (article/letter/editorial) | | Amsaga area,
West African craton, Mauritania
Ashlea N. Wainwright, Fatima El Atrassi, Vinciane Debaille, Nadine...rocks from the Amsaga area, West African craton, Mauritania, Precambrian Research (2019),
doi: https://doi...area, West African craton, Mauritania
3
4
ASHLEA N. WAINWRIGHT1*+, FATIMA EL ATRASSI1, VINCIANE DEBAILLE1...Keywords: Paleoarchean, 142Nd, West African Craton, Mauritania, Geodynamic Regime
16
1
17
Abstract
18...from the Amsaga
126
area, West African craton, Mauritania. We will present new whole-rock major and trace | 👁 Image
| | Report (article/chapter) | | Mesoarchaean terranes in the Reguibat shield
of NW Mauritania
R. M. KEY1, S. C. LOUGHLIN1, M. GILLESPIE1, M...recognized in the Archaean Reguibat shield of NW
Mauritania, based primarily on their gross lithological...such, the two domains are redefined as the Choum–Rag el Abiod Terrane and Tasiast– Tijirit
Terrane. Previous...metamorphic lithologies of the eastern Choum–Rag el
Abiod Terrane indicate a succession of crustal growth...Choum–Rag el
Abiod Terrane. A new U– Pb zircon age of 2954+111 Ma is presented for a deformed
granite confined | 👁 Image
| | Journal (article/letter/editorial) | | serpentinite. SIMS U–Pb zircon dating on the later
granite constrains a minimum formation age of ∼2581 Ma...et al., 2011, 2012; Huang et al., 2014), the Guelb el Azib layered complex in the West African craton (Berger...area is a typical part of a high-grade metamorphic
region in the Yinshan Block. The preserved Archean rock...XWLBL include ∼70–75% charnockite and gneissic granite,
∼20% mafic to intermediate intrusive rocks, and...complex
occurs as fragments within the host gneissic granite (Figs. 2and 4a)
and measures ∼10 by 0.5–1 km in | 👁 Image
| Koffi, Gnagnon Raymond-Stéphane, Kouamelan, Alain Nicaise, Allialy, Marc Ephrem, Coulibaly, Yacouba, Peucat, Jean-Jacques (2020) Re-evaluation of Leonian and Liberian events in the geodynamical evolution of the Man-Leo Shield (West African Craton) Precambrian Research, 338. 105582 doi:10.1016/j.precamres.2019.105582 | Journal (article/letter/editorial) | | (GGGs),
charnockites, and granodiorites from the Man region in western Côte d'Ivoire
obtained by in-situ analysis...improvement upon
previous ages obtained from the Man region. These were based on direct
evaporation methodologies...whole rock-garnet Sm–Nd age
of a granulitic pink granite sampled in same area (Kouamelan et al., 1997a)...Potrel et al. (1998) reported ages of charnockitic granite
ranging between 2.9–2.7 Ga with Nd model ages between...tic rocks from the Guelb el Azib layered complex
(West African craton, Mauritania). Precambrian Research | 👁 Image
| | Book | | deposits in Morocco, Algeria, Tunisia, Mali,
Mauritania, Egypt, Sudan, and Eritrea. Originally our goal...the setting and origin of major deposits in the region, together with
information on tonnages and grades...Tighza district of Morocco, proposing links to
granite-related porphyry and epithermal processes. M. Bouabdellah...Souiah, reports on the geology and mineralogy of the El
Hammam REE-rich fluorite deposit in Morocco, suggesting...is followed by
I.K. Khalil, A.M. Moghazi, and A.M. El Makky on mineralogical and geochemical constraints | 👁 Image
| Berger, Julien, Lo, Khalidou, Diot, Hervé, Triantafyllou, Antoine, Plissart, Gaëlle, Féménias, Olivier (2017) Deformation-driven Differentiation during in situ Crystallization of the 2·7 Ga Iguilid Mafic Intrusion (West African Craton, Mauritania) Journal of Petrology, 58 (4) 819-840 doi:10.1093/petrology/egx035 | Journal (article/letter/editorial) | | Iguilid Mafic
Intrusion (West African Craton, Mauritania)
Julien Berger1*, Khalidou Lo2, Hervé Diot3...represented by the 2726 6 0007 Ga Touijenjert granite
(Auvray et al., 1992; Potrel et al., 1998) and...Iguilid body and the 27 Ga Touijenjert I-type granite are marked in (b). Ages of igneous
bodies are from... Great Ahmeyim dyke,
metaluminous Touijenjert granite), during a tectonic
stage that is controlled by...intermediate to felsic plutons ranging
from diorite to granite, dated at 27 Ga (Auvray et al.,
1992; Potrel et | 👁 Image
| | Journal (article/letter/editorial) | | complex (*after the Lechana settlement in
357
the region). Mokobjwe hill (Fig. 2) represents the type area...geochronology of granitoids in
538
the Vumba granite-greenstone terrain (NE Botswana); implications... rocks from the Guelb el Azib layered complex (West Africa craton,
549
Mauritania). Precambrian Research...Archean granulite-grade tonalite-trondhjemite-granite
640
suite from Scourie, NW Scotland: Geochemistry...TTG-
654
suite orthogneisses in the Fiskefjord region of southern West Greenland. GeoResJ 7, 22–34.
| 👁 Image
| Cui, Xia-Hong, Zhai, Ming-Guo, Guo, Jing-Hui, Zhao, Lei, Zhu, Xi-Yan, Wang, Hao-Zheng, Huang, Guang-Yu, Ge, Song-Sheng (2018) Field occurrences and Nd isotopic characteristics of the meta-mafic-ultramafic rocks from the Caozhuang Complex, eastern Hebei: Implications for early Archean crustal evolution of the North China Craton. Precambrian Research, 310. 425-442 doi:10.1016/j.precamres.2018.03.006 | Journal (article/letter/editorial) | | processes is mainly built on studies of Archean granite-greenstone
terranes, preserved as old cratonic...by 2.7 Ga and 2.5 Ga granite-greenstone belts (Zhai,
2011) (Fig. 1a). The granite-greenstone belts generally...quartzites is the oldest result
so far found in this region (Liu et al., 1992, 2008; Wu et al., 2005; Wilde...during Eoarchean in the NCC, at least in the source
region of those para-gneisses and fuchsite-bearing quartzites...Sijiaoshan-Xiaozhangzhuang Fault filled
with pink potassic granite (~ 2400Ma) younger than flanking rocks (Zhao, 1993) | 👁 Image
| Huang, Hua, Fryer, Brian J., Polat, Ali, Pan, Yuanming (2014) Amphibole, plagioclase and clinopyroxene geochemistry of the Archean Fiskenæsset Complex at Majorqap qâva, southwestern Greenland: Implications for Archean petrogenetic and geodynamic processes. Precambrian Research, 247. 64-91 doi:10.1016/j.precamres.2014.03.021 | Journal (article/letter/editorial) | | in the Fiskenæsset region of southwestern Greenland (Fig. 1). The Fiskenæsset
region consists of ~80% granitoid...The Fiskenæsset Complex and
volcanic rocks in the region were subsequently intruded by granitoids having...facies metamorphism of the southern Fiskenæsset region (Pidgeon and Kalsbeek, 1978). Igneous
rock names...tic rocks from the Guelb el Azib layered complex (West African
craton, Mauritania). Precambrian Research...
d
processes during the Neoarchaean: The Nuuk region, southern West Greenland. Precambrian
Eiler, J | 👁 Image
| | Journal (article/letter/editorial) | | distributions were also explored in samples from the Guelb el Azib Complex (a mafic
intrusion metamorphosed to...from (Antonelli et al., 2019c). The shaded purple region demarcates the compositional field that would be...Calcium isotopes in igneous rocks and the origin of granite.
85
Journal Pre-proof
Geochim. Cosmochim. Acta...d44/40Ca,
d44/42Ca, and d26/24Mg geochemistry of granite weathering at pH=1 and T=25 C: Power-law
processes |
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