Geology, geochemistry and tectonic setting of Pan-African serpentinites of Um Salim-Um Salatit area, Central Eastern Desert, Egypt

Salem, A.K.A.; Khalil, Ahmed E.; Ramadan, Talaat M.

doi:10.1016/j.ejrs.2011.11.004

Cited by 12 publications

(6 citation statements)

References 14 publications

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“…As shown in Fig. 10b, the spinel compositions plotted inside the designated fields of the southeast Alaskan-type complex (Jan and Windley, 1990;Salem et al, 2012) and far from the stratiform complexes and ophiolite fields.…”

Section: Spinel Chemistrymentioning

confidence: 99%

Floresta and Bodocó Mafic–Ultramafic Complexes, western Borborema Province, Brazil: Geochemical and isotope constraints for evolution of a Neoproterozoic arc environment and retro-eclogitic hosted Ti-mineralization

Lages

Dantas

2016

Precambrian Research

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Section: Spinel Chemistrymentioning

confidence: 99%

Floresta and Bodocó Mafic–Ultramafic Complexes, western Borborema Province, Brazil: Geochemical and isotope constraints for evolution of a Neoproterozoic arc environment and retro-eclogitic hosted Ti-mineralization

Lages

Dantas

2016

Precambrian Research

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“…Tectonic classification diagrams of chrome spinels and olivine from dunite and peridotites of Salem Mafic–Ultramafic Complex: (a) discrimination plot of TiO 2 vs. YFe [Fe 3+ /(Fe 3+ + Al + Cr)] of spinels (after Arai, ); (b) discrimination plot of TiO 2 vs. Al 2 O 3 wt.% of spinels (after Kamenetsky, Crawford, & Meffre, ); (c) compositional relationship between Cr# [Cr/(Cr + Al)] of spinel and Fo content of olivine (after Arai, ); (d) trilinear discrimination plot of Cr–Al–Ti + Fe 3+ of spinels (after Jan & Windley, ; Salem, Khalil, & Ramadan, ); (e) discrimination plot of Cr# vs. Mg# of spinels (fields after Irvine, ); and (f) discrimination plot of Fe# vs. Mg# of spinels (fields after Irvine, ). OSMA: olivine‐spinel mantle array; FMM: fertile MORB mantle; LIP: large igneous province; OIB: oceanic island basalt; MORB: mid‐oceanic ridge basalt [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Discussionmentioning

confidence: 99%

The mafic–ultramafic complex of Salem, southern India: An analogue for Neoproterozoic Alaskan‐type complex

2019

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The Salem Mafic–Ultramafic Complex occurs within the northern part of Cauvery Suture Zone (CSZ), Southern Granulite Terrane (SGT), India. The complex occurs as semicircular to elongated linear body with a thick mantle section and comparatively well‐developed crustal section comprising different lithological units, also referred to as the Chalk Hills of Salem. The major rock types in the complex comprise ultramafic cumulates of dunite, peridotite, wherlite, pyroxenite, and hornblendite, mafic and felsic intrusions of gabbros and amphibolites, and quartzo–feldspathic alkaline rocks together with several ultrapotassic dykes. Geochemical studies of amphibolites from this complex indicate tholeiitic parent magma with enrichment of LIL elements (Rb, Ba, Th, and Sr) and are relatively more enriched than N‐MORB as compared with arc‐related rocks. The enrichment of LIL elements over the HFS elements and with distinct Nb, Ta, and Ti depletion relative to other HFS elements suggest the involvement of subduction‐related components in the depleted mantle source and that the magmatism occurred in an oceanic convergent realm. The mineral chemistry of dunite and peridotite shows high content of forsterite (86.9–92.2) in olivine and high Cr# value (80.85–98.73) for spinel. The tectonic discrimination plots of spinel and olivine mineral chemistry together with clinopyroxene chemistry of amphibolites reveal arc signature typical of Alaskan type of complex. The U–Pb zircon analysis of quartz monzonite intrusion within the hornblendite from the complex yielded a weighted mean age of 819 ± 2.4 Ma, suggesting that the complex formed during the Neoproterozoic and can be correlated to the Alaskan‐type complexes described from the Arabian–Nubian Shield.

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“…Except for the biotite-phlogopite micas, all were identified by Raman spectroscopy. Chromite is often found within olivine-rich cumulates and occurs as small grains in ultramafic rock associated with serpentine, talc, and magnesite (Barnes, 1998;Salem et al, 2012). Some metamorphisms can also produce predominantly chlorite in association with talc (Sharp and Buseck, 1988).…”

Section: A B C D E Fmentioning

confidence: 99%

Gemological Characterization of Peridot from Pyaung-Gaung in Mogok, Myanmar

Seneewong-Na-Ayutthaya¹,

Chongraktrakul²,

Sripoonjan³

2022

G&G

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Geology, geochemistry and tectonic setting of Pan-African serpentinites of Um Salim-Um Salatit area, Central Eastern Desert, Egypt

Cited by 12 publications

References 14 publications

Floresta and Bodocó Mafic–Ultramafic Complexes, western Borborema Province, Brazil: Geochemical and isotope constraints for evolution of a Neoproterozoic arc environment and retro-eclogitic hosted Ti-mineralization

Floresta and Bodocó Mafic–Ultramafic Complexes, western Borborema Province, Brazil: Geochemical and isotope constraints for evolution of a Neoproterozoic arc environment and retro-eclogitic hosted Ti-mineralization

The mafic–ultramafic complex of Salem, southern India: An analogue for Neoproterozoic Alaskan‐type complex

Gemological Characterization of Peridot from Pyaung-Gaung in Mogok, Myanmar

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