 | | Journal (article/letter/editorial) | | structural levels beneath the Semail ophiolite, Oman, record the subduction and later exhumation of the...(78.95 ± 0.13 Ma) and rutile (79.6 ± 1.1 Ma) ages for the eclogites, as well as new U-Pb zircon ages for...Introduction The Semail Ophiolite of Oman has long been lauded as the largest, most complete and best...beneath the ophiolite, which outcrops in northern Oman. The ïŹrst, patchily exposed along the length of...temperature (HPâLT) event exposed only in Saih Hatat, north-eastern Oman, aïŹects the continental margin succession |  | | Report (chapter) | | exhumation of a high-pressure metamorphic terrane, Oman J. M c L . M I L L E R 1,4, R . T. G R E G O R Y...exhumation process for these rocks. High-P rocks occur as stacked fold-nappes within a less deformed upper...northeastern sector of the Saih Hatat window (Figs 1 and 2) is unique in Oman, because these sequences...undeformed autochthon. The high-pressure rocks of Saih H a t a t share many of the characteristics of A...geochronology with a new structural framework for the Saih Hatat window, and then consider the implications of |  | | Report (chapter) | | Aberdeen on February 15, 2015 Metamorphism in the Oman Mountains in relation to the Semail ophiolite emplacement...rocks associated with the Semail ophiolite in the Oman Mountains represent two different facies series... The amphibolites of the metamorphic sole formed as a result of heat transfer from the hot overthrust...metamorphosed farther away from the spreading centre as the ophiolitic slab became cooler and moved closer...and crossite epidote schists formed in the Saih Hatat window as a result of A-type subduction (crustal thickening) |  | YAMATO, P., AGARD, P., GOFFĂ, B., DE ANDRADE, V., VIDAL, O., JOLIVET, L. (2007) New, high-precision P?T estimates for Oman blueschists: implications for obduction, nappe stacking and exhumation processes. Journal of Metamorphic Geology, 25 (6) 657-682 doi:10.1111/j.1525-1314.2007.00722.x | Journal (article/letter/editorial) | | 2007.00722.x New, high-precision PâT estimates for Oman blueschists: implications for obduction, nappe stacking...de la piscine, 38041 Grenoble, France ABSTRACT Oman blueschists and eclogites lie below the obduction...the low-grade units (10 kbar, <300 C) and the As Sifah eclogites (Pmax 23 kbar; Tmax 600 C).TWEEQU...yield a high-precision PâT path for the Hulw and As Sheikh units and reveal that they shared a common...comprising the Saih Hatat window (i.e. the Ruwi-Quryat, the Hulw-As Sheikh and the Diqdah-As Sifah units). These |  | | Journal (article/letter/editorial) | | exhumation of blueschists and eclogites from NE Oman: new perspectives from RbâSr and 40Ar/39Ar dating...Department of Earth Sciences, Sultan Qaboos University, Oman, and Geology Department, Idaho State University...conclude that high-pressure metamorphism of the Oman margin took place in the Late Cretaceous, contemporaneous...words: age data; blueschists; eclogites; exhumation; Oman; subduction. INTRODUCTION Since Michard et al...metasediments and blueschists in the Saih Hatat area in NE Oman, at least 10 different tectonic models |  | Gray, David R, Hand, Martin, Mawby, Jo, Armstrong, Richard A, Miller, John McL, Gregory, Robert T (2004) SmâNd and Zircon UâPb ages from garnet-bearing eclogites, NE Oman: constraints on High-P metamorphism. Earth and Planetary Science Letters, 222 (2) 407-422 doi:10.1016/j.epsl.2004.03.016 | Journal (article/letter/editorial) | | Zircon UâPb ages from garnet-bearing eclogites, NE Oman: constraints on High-P metamorphism David R. Gray...Samail Ophiolite, Oman record an early subduction-related high-P metamorphism as well as subsequent overprinting...garnet-bearing eclogite assemblages in the As Sifah subwindow in NE Oman are 110 F 9 Ma (DG02-87D); 5-point isochron)...obducted Samail oceanic lithosphere (97 â 94 Ma) as well as the subsequent obduction onto the margin (80...ophiolite obduction are inappropriate to explain the Oman high-P metamorphism. D 2004 Elsevier B.V. All rights |  | | Journal (article/letter/editorial) | | OPHIOLITES AND THE GEOLOGICAL STRUCTURE OF EASTERN OMAN a b N. A. Bogdanov , N. L. Dobretsov & A. L. Knipper...OPHIOLITES AND THE GEOLOGICAL STRUCTURE OF EASTERN OMAN, International Geology Review, 33:9, 858-878, DOI:...make no representations or warranties whatsoever as to the accuracy, completeness, or suitability for... OPHIOLITES AND THE GEOLOGICAL STRUCTURE OF EASTERN OMAN N. A. Bogdanov, N. L. Dobretsov, and A. L. Knipper..."Ofiolity i geologicheskoye stroyeniye Vostochnogo Oman," Izvestiya AN SSSR, Seriya geologicheskaya, 1991 |  | | Journal (article/letter/editorial) | | deeply subducted metasediment from As Sifah, northeastern coast of Oman Hans-Joachim Massonne a,â, Joachim...of Earth Sciences, Sultan Qaboos University, Muscat, Oman a r t i c l e i n f o Article history: Received...metamorphism Oman Metasediment P-T pseudosection a b s t r a c t Near the coastal village of As Sifah, NE Oman...Oman, eclogite-facies rocks occur in the Saih Hatat window. We investigated a metapelite from this area...epidote, blue amphibole, paragonite, albite, quartz, rutile, opaque phases, barite, and carbonate. Garnet exhibits |  | | Journal (article/letter/editorial) | | almandine: constraints on the metamorphic history of the Oman mountains Anke S. Wendt a,b Philippe D'Arco a, Bruno...observed in metapelite samples from the southeastern Saih Hatat tectonic window, northeastern O m a n Mountains...shows only quartz, apatite, zircon, rutile and Ba-AI phosphates as inclusions. Quartz and apatite inclusions...for the peak conditions for these rocks of the Saih Hatat tectonic window. On the basis of these P-T data...following cases: (1) If independent evidence (such as petrological data) allow the determination of the |  | | Journal (article/letter/editorial) | | 00 Eclogites and Blueschists from Northeastern Oman: Petrology and P-T Evolution by ALEY EL-DIN EL-SHAZLY...continental shelf deposits in the Saih Hatat tectonic window of northeastern Oman, where they structurally underlie...crossite-epidote schists in central and western Saih Hatat grade into blueschists and eclogites at AsSifah...this terrain formed as a result of A-type subduction and crustal thickening of the Oman continental margin...of ophiolite emplacement in the late Cretaceous, as indicated by the metamorphism of the thrust sheets |  | | Journal (article/letter/editorial) | | 40Ar/39Ar laserprobe ages: an example from Saih Hatat, NE Oman C. J. Warren âą S. C. Sherlock âą S. P. Kelley...laserprobe phengite data from the Saih Hatat high-pressure terrane in NE Oman show that individual samples...grain- and sample-scale age variations measured in Saih Hatat indicate that the grain boundary network in eclogite...boundary network in the surrounding pelites acted as a more efficient pathway on the timescale of the...metamorphism Eclogite Oman Introduction The ubiquity of potassium-bearing micas such as muscovite and phengite |  | | Journal (article/letter/editorial) | | Retrograde evolution of eclogite facies rocks from NE Oman: evidence from fluid inclusions and petrological...Qaboos UniĂersity, P.O. Box 36, Al-Khod PC 123, Oman b Department of Geology and Geophysics, Rice UniĂersity... Abstract Eclogite facies rocks from eastern Saih Hatat ĆœOman., metamorphosed under peak conditions of...most inclusions range from y4 to 08C, but values as low as y138C have been recorded, indicating salinities...quartz by calcite q talc, and of rutile q calcite by titanite or rutile q glaucophane by ilmeniteq albite |  | | Journal (article/letter/editorial) | | from NE Oman Aley El-Din K. El-Shazly ) Department of Earth Sciences, Sultan Qaboos UniĂersity, Oman Received...rocks of the structurally deepest regions of Saih Hatat, NE Oman exhibit an eastward increase in metamorphic...epidote blueschist facies conditions in central Saih Hatat to eclogitic conditions along the eastern coast...Keywords: Eclogites; Blueschists; Thermobarometry; Oman AbbreĂiations: Ab: albite; Ac: aegirine Ćœacmite...phlogopite; Ps: pistacite; Py: pyrope; Qz: quartz; Rt: rutile; Sap: sapphirine; Sp: spessartine; Tc: talc; Ttn: |  | | Journal (article/letter/editorial) | | sodic amphibole-bearing metabasites from north-east Oman ALEY EL-DIN K . EL-SHAZLY* Department of Mineral...section underlying the Semail ophiolite in Saih Hatat, north-east Oman. The pre-Permian basement of this section...empirically and experimentally based thermobarometers as well as petrogenetic grids calculated for a model basaltic...metamorphic grade in central, western and northern Saih Hatat are consistent with the hypothesis relating metamorphism...eclogites exposed along the eastern coast of Saih Hatat which may have formed at an earlier stage in |  | | Journal (article/letter/editorial) | | of Fe-Mg-carpholite-bearing metasediments from NE Oman ALEY EL-DIN K. EL-SHAZLY* Department of Earth Sciences...structurally underlie the Semail ophiolite in NE Oman. In the lower grade, structurally higher units,...formation of the Fe-Mgcarpholite-bearing rocks of NE Oman range from 280-315" C, 3-6 kbar for the structurally...Key words: carpholite; low-grade metamorphism; NE Oman. Abbreviations Ank, ankerite; Ap, apatite; Arag...Ph, phengite; Prl, pyrophyllite; Qz, quartz; Rt, rutile; g,third law entropy of phase 'i' at 298K; Srn |  | | Report (chapter) | | 2015 Structure of the metamorphic sole to the Oman Ophiolite, Sumeini Window and Wadi Tayyin: implications...localities where the inverted metamorphic sole of the Oman Ophiolite are best exposed, Sumeini Window and Wadi...ancient plate boundaries and, in a few cases such as Oman, the ophiolite thrust sheet has remained unaffected...rarely preserved (e.g. Corfield et al. 2001). In Oman the evidence for the origin and emplacement mechanism... 2003), it has been widely recognized that the Oman (or Semail) Ophiolite is by far the most complete |  | | Journal (article/letter/editorial) | | Glaucophane chloritoid-bearing assemblages from NE Oman: petrologic significance and a petrogenetic grid...interbeddcd with blueschists and eclogites in Saih Hatat, NE Oman contain chloritoid- and sodic amphibole-bearing...the P - T estimates for high P metapelites from Oman, New Caledonia, Seward Peninsula, Ile de Groix,...observed textural relations in the metapelites of Oman, and is consistent with the "clockwise" P - T path...overlaps with the stability fields of J d + Q z as well as Ab. The petrogenetic grid calculated for the |  | | Journal (article/letter/editorial) | | carpholite-bearing metasediments and blueschists from NE Oman: Constraints on P-T evolution ALEY K. EL-SHAZLY1...Thrust sheets of the upper plate of the Saih Hatat window, NE Oman contain metasediments formed under lawsonite...Ph: phengite, Prl: pyrophyllite, Qz: quartz, Rt: rutile, S.F.: shape factor, Sud: sudoite, Tm: tourmaline...(e.g. Calabria, Crete, Greece, New Caledonia, and Oman) are poorly constrained and controversial. One of...controversies applies to the high P/T rocks of Saih Hatat, Oman, where peak pressure estimates for Fe-Mg carpholite |  | | Journal (article/letter/editorial) | | Eclogites, Blueschists and Epidote Amphibolites from NE Oman: a Record of Protolith Compositional Control and...QABOOS UNIVERSITY, P.O. BOX 36, AL-KHOD PC 123, OMAN 2 DEPARTMENT OF GEOLOGICAL SCIENCES, SOUTHERN...mica schists in NE Oman. These rocks constitute part of the continental margin of Oman subducted during...paragonite; Ph, phengite; Qz, quartz; Pyrp, pyrope; Rt, rutile; Spess, spessartine; Tc, talc; Ttn, titanite; Win...and/or greenschists are common in several areas such as Cazadero, California (e.g. Oh et al., 1991), the |  | | Journal (article/letter/editorial) | | model is developed that calculates Are age fractions as a function of variable micaâïŹuid K D , bulk K2O and...volume fraction, showing that maïŹc protoliths operate as closed systems to advective solute transport during...closure temperature interval, the mica grain operates as an open system in that argon is eïŹciently removed...terranes. However, in high-dP/dT tectonic regimes such as subduction zones, the A.J. Smye et al. / Geochimica...hand-sample length-scales, the sample can be described as containing inherited 40Ar despite the constituent |  | | Journal (article/letter/editorial) | | significance after the advent of plate tectonics as marking the location of former subduction zones....amphi boles in the metabasic rocks are regarded as transitional between the blueschist and greenschist...ocean, the Tethys. The Alpine-Himalayan orogen arose as a result of the continen tal collisi on s leading...giving rise to the Himalayan orogeny (Figure 1). As is apparent from these rifting and collision events...eastern Apulia of Greece and western Turkey, the Oman-Makran region, and the Himalaya. Western Apulia |  | | Journal (article/letter/editorial) | | zoned minerals such as garnet and phengite. The examples of a metapelite from Oman and an eclogite from...the Fe2+ âMg exchange between mineral pairs such as garnet and omphacite or garnet and biotite, were...PâT conditions for a single event, which was taken as the peak PâT point of a metamorphic loop. The chemical...which are typically and garnet has been explored as a function of composition compositionally zoned (FIG...(FIG. 1), are often used to calculate and pressure. As a result, the thermodynamic properties of mineral |  | | Journal (article/letter/editorial) | | garnet), which suggests the role of these minerals as the major controller of HREE distribution. The geochemical...above- is Jurassic (about 175 million years ago) as the same in Shemshak, Badamu and Hojedk formations...Pe gu Study area lf Makran 26 0 Qatar 200 OMAN SEA 32°47âČ 50°37âČ Chadegan N 0 2.5 5.0 7...This study is mostly based on mineral chemistry, as well as on their trace elements. Following the field...mylonitic structures. Amphibolites Amphibolites are seen as massive or lenses inside mylonite granites (Fig. |  | Bonnet, G., Agard, P., Whitechurch, H., Fournier, M., Angiboust, S., Caron, B., Omrani, J. (2020) Fossil seamount in southeast Zagros records intraoceanic arc to back-arc transition: New constraints for the evolution of the Neotethys. Gondwana Research, 81. 423-444 doi:10.1016/j.gr.2019.10.019 | Journal (article/letter/editorial) | | date: 16 October 2019 Please cite this article as: G. Bonnet, P. Agard, H. Whitechurch, et al., Fossil...has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting...represents either (i) a non-obducted remnant of the Oman ophiolite that experienced a longer-lived magmatic...On modern ocean floor, -p seamounts are defined as ââgeographically isolated topographic feature[s]...over (Cloos, 1993), that may even not be recognized as such (unless having an OIB-like signature; e.g. Hauff |  | Saktura, Wanchese M., Buckman, Solomon, Nutman, Allen P., Belousova, Elena A., Yan, Zhen, Aitchison, Jonathan C. (2017) Continental origin of the Gubaoquan eclogite and implications for evolution of the Beishan Orogen, Central Asian Orogenic Belt, NW China. Lithos, 294. 20-38 doi:10.1016/j.lithos.2017.10.004 | Journal (article/letter/editorial) | | June 2017 7 October 2017 Please cite this article as: Wanchese M. Saktura, Solomon Buckman, Allen P. Nutman...address for the corresponding author was captured as affiliation for all authors. Please check if appropriate...manuscript that has been accepted for publication. As a service to our customers we are providing this...has been interpreted as a fragment of subducted oceanic crust that was emplaced as a mĂ©lange M within...and arbitrary subdivisions of Precambrian blocks as individual microcontinents. In an attempt to resolve |
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