 | | Report (chapter) | | accompanied by development of a major shear zone in Saih Hatat (the upper plate-lower plate discontinuity described...structure and Tertiary evolution of the mountain range. Oman ophiolite obduction clearly involves ocean-vergent...1984; Mitchell 1986) or subduction zone 'lock-up', as a result of attempted subduction of continental margins...margin. The Samail Ophiolite of the Sultanate of Oman on the Arabian Peninsula (Fig. 3) is the best-exposed...the obduction process may not be as simple as originally defined. In Oman, there is clear evidence that |  | | 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) |  | | 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) | | a-quartz inclusions in almandine: constraints on the metamorphic history of the Oman mountains Anke S. Wendt...inclusions in almandine have been observed in metapelite samples from the southeastern Saih Hatat tectonic...quartz, apatite, zircon, rutile and Ba-AI phosphates as inclusions. Quartz and apatite inclusions in the...shear modulus for the example of a-quartz and almandine for the same P and T interval during a retrograde...for the peak conditions for these rocks of the Saih Hatat tectonic window. On the basis of these P-T data |  | 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) | | structural levels beneath the Semail ophiolite, Oman, record the subduction and later exhumation of the...rutile (79.6 ± 1.1 Ma) ages for the eclogites, as well as new U-Pb zircon ages for trondhjemites from the...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 |  | | Journal (article/letter/editorial) | | of the East-Arabian continental margin in the Saih Hatat area: constraints for the palaeogeographic setting...basins (Oman Mountains) Received: 1 September 1998 / Accepted: 18 January 1999 Abstract In Oman, the convergence...sediments, well exposed in the Saih Hatat tectonic window, northeastern Oman Mountains. We attempt to constrain...palaeogeographic setting before ophiolite obduction of the As Sifah units and the Hawasina Complex near Ghurba. Detrital...of As Sifah can be considered as part of the basal deposits of the Hawasina Basin. Key words Oman 7 Chromite |  | Jolivet, L, GoffĂ©, B, Bousquet, R, OberhĂ€nsli, R, Michard, A (1998) Detachments in high-pressure mountain belts, Tethyan examples. Earth and Planetary Science Letters, 160 (1) 31-47 doi:10.1016/s0012-821x(98)00079-x | Journal (article/letter/editorial) | | and the infraophiolitic units of the Saih Hatat window in the Oman Mountains, we describe the tectono-metamorphic...major shear zone, or between the shear zones in Oman, the deformation regime was more coaxial and involved...in immature mountain belts such as Crete, the eastern Alps and the Oman Mountains, and show here that they...Letters 160 (1998) 31â47 ducted ophiolite nappe in Oman [5,6]. In most cases, detachments are first recognized...The phengitic substitution of micas (expressed here as the Si4C content) growing together with carpholite |  | | Journal (article/letter/editorial) | | formation and emplacement of the Semail ophiolite in the Oman Mountains MICHAEL P. SEARLE* & JON COX *Department...metamorphic sole along the base of the Semail ophiolite in Oman records the earliest thrust slice subducted and...data from the sub-ophiolite metamorphic sole in Oman and the United Arab Emirates indicate that the ophiolite...subduction zone during Late Cretaceous times. Keywords: Oman, ophiolite, subduction, mid-ocean ridges, metamorphism...(Glennie et al. 1973, 1974). Controversy still exists as to the tectonic setting of the Semail ophiolite and |  | 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) | | 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 |  | | 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) | | 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...Ćœacmite.; Act: actinolite; Alln: allanite; Alm: almandine; Ap: apatite; Aug: augite; Bar: barroisite; Brt: |  | | 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...Gro17Alm66Pyr6Spe11, Gro22Alm72.5Pyr5Spe0.5, and Gro25Alm65Pyr8Spe2 as inner core, mantle and outermost rim compositions |  | | 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...Eclogites; Fluid inclusions; Retrogression; Exhumation; Oman 1. Introduction Abbreviations: Ab: albite; Ac: |  | | 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) | | 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...Ab, albite; Ac, acmite; Act, actinolite; Alm, almandine; Aln, allanite; Ap, apatite; Aug, augite; Bar...and/or greenschists are common in several areas such as Cazadero, California (e.g. Oh et al., 1991), the |  | | 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. |  | Lucci, Federico, Rossetti, Federico, Becchio, Raul, Theye, Thomas, Gerdes, Axel, Opitz, Joachim, Baez, Walter, Bardelli, Lorenzo, De Astis, Gianfilippo, Viramonte, JosĂ©, Giordano, Guido (2018) Magmatic Mn-rich garnets in volcanic settings: Age and longevity of the magmatic plumbing system of the Miocene Ramadas volcanism (NW Argentina) Lithos, 322. 238-249 doi:10.1016/j.lithos.2018.10.016 | Journal (article/letter/editorial) | | June 2018 16 October 2018 Please cite this article as: F. Lucci, F. Rossetti, R. Becchio, T. Theye, A....manuscript that has been accepted for publication. As a service to our customers we are providing this...phenocrysts, typically hosting inclusions of U-phases as zircon and monazite. Here, PT we present new textural...rhyolitic melt at shallow crustal levels (â€6 km), as NU sequentially tracked by the initial nucleation...a conclusive criterion in determining its origin, as garnet in metamorphic rocks can have a wide compositional |  | | Book | | pleasure to welcome you in this scientific gathering in Oman which has been made possible through the directives...contribute to the advancement of earth sciences. We, in Oman look forward with keen interest to the outcome of...graduates for a better future. I extend my thanks as well to the UNESCO and all those who have contributed... I wish to thank the Ministry of Defence, Royal Oman Police and the Ministry of Information for their...stimulate the mineral sector in the Sultanate of Oman. The Ministry hopes that the research efforts would |  | | Journal (article/letter/editorial) | | February 2017 3 June 2017 Please cite this article as: Li, Botao, Massonne, Hans-Joachim, Contrasting metamorphic...manuscript that has been accepted for publication. As a service to our customers we are providing this...based on AC CE P chemically zoned minerals, such as phengite, using P-T, P-O2, and T-O2 pseudosections...subvertical shear zones (with significant strike-slip) as well as subvertical folding (Llana-FĂșnez and Marcos,...3e). Porphyroblastic euhedral andalusite being as large as 1 cm (Fig. 3d) contains numerous inclusions of |  | | Journal (article/letter/editorial) | | 12057 Lawsonite blueschists and lawsonite eclogites as proxies for palaeo-subduction zone processes: a review...from at least 19 localities; they are classified as L(lawsonite only), E- (lawsonite + epidote), and...stability field is preserved in some zoned garnets, as growth isolates a significant volume of precursor...Earthâs NeoproterozoicâPhanerozoic orogenic belts. As a key proxy of oceanic plate subduction along a cold...can potentially © 2013 John Wiley & Sons Ltd serve as a geochemical and geophysical tracer (Abers et al |  | | Journal (article/letter/editorial) | | solid inclusions from orogenic garnet peridotites as evidence of mantle metasomatism in a subduction zone...the observed chemical variability can be expressed as ÂBaFeIVAlClKâ1Mgâ1Siâ1(OH)â1. A minor amount of Cr...Al)2âĄVI(Mg,Fe)â3 towards chromphyllite and muscovite. As demonstrated by variable Ba and Cl contents positively...involve slices of deeply subducted crustal rocks as well as orogenic garnet peridotites (e.g. Liou 13 Vol...coesite-bearing crustal-derived metamorphic rocks. As these rocks show mineral assemblages similar to high-pressure |
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