2015
DOI: 10.3906/yer-1404-24
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Petrology and geochemistry of mafic dykes from the Muslim Bagh Ophiolite (Pakistan): implications for petrogenesis and emplacement

Abstract: Two different types of mafic dykes are found in the Muslim Bagh Ophiolite: 1) a sheeted dyke complex and 2) a mafic dyke swarm. Relative to the host plutonic section, the sheeted dykes are poorly developed, implying that they formed in an oceanic setting with a low and intermittent supply of magma, probably because of cyclic accumulation of crystals at the base of the magma chamber. Both the sheeted dykes and the dyke swarms have been metamorphosed to greenschist/amphibolite facies conditions. With the excepti… Show more

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Cited by 16 publications
(10 citation statements)
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“…In view of the prevailing tectonic scenario (Fig. 5) we further opine that rapid slab rollback and associated collisional events 17,43,44 that terminated subduction in the northern edge (e.g. Muslim Bagh-Bela SSZ environment) was also responsible for termination of SI in the LB.…”
Section: Discussionmentioning
confidence: 74%
See 1 more Smart Citation
“…In view of the prevailing tectonic scenario (Fig. 5) we further opine that rapid slab rollback and associated collisional events 17,43,44 that terminated subduction in the northern edge (e.g. Muslim Bagh-Bela SSZ environment) was also responsible for termination of SI in the LB.…”
Section: Discussionmentioning
confidence: 74%
“…Symbols as labelled on the diagram. Reference domains are adopted from published literature (MORB 68 , Neothethyan ophiolites 69 , IBM 31,33,34,41,42 , Muslim Bagh 44,45 )…”
Section: Resultsmentioning
confidence: 99%
“…The latter (so-called isotropic gabbro) is restricted to the upper part of ophiolites and has genetic relations with sheeted dike complexes and volcanic rocks. Most of the Olkhon gabbros are geochemically similar to those from cumulative ophiolites [58,[66][67][68][69][70]. Their positive Sr anomaly and negative Ta-Nb anomaly make the Olkhon gabbro similar to SSZ ophiolites [3,4].…”
Section: Discussionmentioning
confidence: 95%
“…These rocks are partially to completely serpentinized (30 to 100%) and intensively sheared (Mahmood et al, 1995). The swarms of 3 to 15 m thick mafic dyke cross cut the mantle section of this body (Kakar et al, 2015). Ahmad (1974), Otsuki et al (1989) and Sawada et al (1992) proposed a mid-oceanic ridge tectonic setting for the Muslim Bagh ophiolite.…”
Section: Geology Of Zhob Valley Ophiolitementioning
confidence: 98%