 | Belgrano, Thomas M., Diamond, Larryn W., Vogt, Yves, Biedermann, Andrea R., Gilgen, Samuel A., Al-Tobi, Khalid (2019) A revised map of volcanic units in the Oman ophiolite: insights into the architecture of an oceanic proto-arc volcanic sequence. Solid Earth, 10 (4). 1181-1217 doi:10.5194/se-10-1181-2019 | Journal (article/letter/editorial) | | License. A revised map of volcanic units in the Oman ophiolite: insights into the architecture of an oceanic...R. Biedermann1,2 , Samuel A. Gilgen1 , and Khalid Al-Tobi3 1 Institute of Geological Sciences, University...Box 1242, PC 130 Athaibah, Muscat, Sultanate of Oman 2 Institute Correspondence: Thomas M. Belgrano...above nascent subduction zones. The Semail ophiolite (Oman–U.A.E.) in particular can be viewed as an analogue...thick upper-crustal succession of the Semail ophiolite, which is exposed in an oblique cross section |  | | Journal (article/letter/editorial) | | possible Moho in the northern Oman ophiolite: an example from Wadi Fizh Norikatsu Akizawa and Shoji Arai...the layered gabbro section along Wadi Fizh of the northern Oman ophiolite to understand the formation mechanism...wt%) and atomic ratios of Cr/(Cr + Al) (0.5 to 0.6) and Fe3+/(Cr + Al + Fe3+) (0.05 to >0.1) in spinel...Harzburgite, Peridotite/melt reaction, Wadi Fizh, Oman ophiolite INTRODUCTION The petrological nature...data and observations of ophiolites. In the Oman ophiolite, however, no such serpentinization fronts have |  | | Journal (article/letter/editorial) | | fast-spreading axis: an example from Wadi Fizh of the northern Oman ophiolite Norikatsu Akizawa • Shoji Arai...lithologies in uppermost mantle section of Oman ophiolite are highly complicated, harzburgites especially...uppermost mantle section of the northern Oman ophiolite (along Wadi Fizh), and it provides us with centimeter-scale...modal clinopyroxene (up to 3.5 vol.%) than ordinary Oman Communicated by T. L. Grove. N. Akizawa (&) S...Melt–harzburgite interaction Sharpest Moho Thin MTZ Oman ophiolite Introduction Abyssal peridotites are in equilibrium |  | | Journal (article/letter/editorial) | | from the deeper mantle section of the northern Oman ophiolite and its tectonic implications Received: 11...time in a podiform chromitite of the northern Oman ophiolite. The chromitite contains £ 1.5 ppm of total...the mantle to the crust (Naldrett 1981; Garuti et al. 1997). PGE-abundance systematics give us information...the early stage of the planet’s history (Jagoutz et al. 1979; Arculus and Delano 1981; O’Neill 1991). PGEs...distribution and mineralogy of PGEs in the Oman ophiolite in general, especially in its northern part |  | | Journal (article/letter/editorial) | | chromitites from the mantle section of the Oman ophiolite: A review Hugh Rollinson ⁎, Jacob Adetunji...Available online xxxx Keywords: Ophiolite Chromitites Geochemistry Petrogenesis Oman a b s t r a c t Data are...localities over 350 km strike length of the Oman ophiolite. Chromitite compositions form a continuum from...conflates a number of different magmatic ‘events’. The Oman mantle chromitites record a wide range of Fe3+/ΣFe...and Al2O3 contents for the parental melts to the Oman chromitites show that they had low TiO2 contents |  | | Report (chapter) | | wehrlitic intrusions from the Wadi Barghah to Salahi area in the northern Oman Ophiolite Ryu Kaneko, Yoshiko Adachi...wehrlitic intrusions from the Wadi Barghah to Salahi area in the northern Oman Ophiolite RYU KANEKO1*, YOSHIKO...important element of oceanic lower crust of the Oman Ophiolite, and numerous such dunite and plagioclase wehrlitic...gabbro units in the northern Salahi Block of this ophiolite. For the first time, we describe a large wehrlitic...wehrlitic intrusions. The Oman Ophiolite extends along the east coast of Oman and the United Arab Emirates |  | AKIZAWA, Norikatsu, ARAI, Shoji, TAMURA, Akihiro, UESUGI, Jiro, PYTHON, Marie (2011) Crustal diopsidites from the northern Oman ophiolite: Evidence for hydrothermal circulation through suboceanic Moho. Journal of Mineralogical and Petrological Sciences, 106 (5) 261-266 doi:10.2465/jmps.110621b | Journal (article/letter/editorial) | | diopsidites from Oman ophiolite 261 LETTER Crustal diopsidites from the northern Oman ophiolite: Evidence...from the lowermost crust along Wadi Fizh in the northern Oman ophiolite. The anorthite diopsidites occur...Hydrothermal fluids, Upper mantle, Lower-crust gabbro, Oman ophiolite INTRODUCTION Although hydrothermal circulation...within this zone remain controversial. The Oman ophiolite offers unparalleled information on this topic...Yoshi take et al., 2009) and penetrated further down to the layered gabbros (Kawahata et al., 2001; Abily |  | | Journal (article/letter/editorial) | | granitoid dykes from the mantle section of the Oman ophiolite Hugh Rollinson1 Received: 27 February 2015...into depleted mantle harzburgites of the Oman–UAE ophiolite. A detailed field, petrological and geochemical...a MORB-type basalt similar in composition to the Oman Geotimes lavas and a model using the MUQ (MUd from...Queensland) global sediment composition (Kamber et al. Geochim Cosmochim Acta 69:1041–1058, 2005) both...data suggest a model for the origin of the Oman ophiolite in which it is formed by spreading above a |  | | Report (issue) | | DENVER MINERAL DEPOSITS AND GEOLOGY OF NORTHERN OMAN AS OF 1974 By R. G. Coleman and E. H. Bailey U....Minerals, Ministry of Development, Sultanate of Oman 1981 l...Minerals, Ministry of Development, Muscat, Sultanate of Oman. CONTENTS Page Summary •..•... Introduction. Staff...Arabian Shelf Carbonates. Ophiolite and related rocks (Allochthon) Semail ophiolite •...... Hawasina unit...metamorphics .. Sedimentary rocks lying on Semail ophiolite. Shallow-water marine limestone. Pliocene-Holocene |  | Yamaoka, Kyoko, Ishikawa, Tsuyoshi, Matsubaya, Osamu, Ishiyama, Daizo, Nagaishi, Kazuya, Hiroyasu, Yuko, Chiba, Hitoshi, Kawahata, Hodaka (2012) Boron and oxygen isotope systematics for a complete section of oceanic crustal rocks in the Oman ophiolite. Geochimica et Cosmochimica Acta, 84. 543-559 doi:10.1016/j.gca.2012.01.043 | Journal (article/letter/editorial) | | complete section of oceanic crustal rocks in the Oman ophiolite Kyoko Yamaoka a,⇑, Tsuyoshi Ishikawa b, Osamu...3-km-thick oceanic crust in the Wadi Fizh area of the Oman ophiolite, a fragment of Cretaceous oceanic...doi:10.1016/j.gca.2012.01.043 544 K. Yamaoka et al. / Geochimica et Cosmochimica Acta 84 (2012) 543–559...boron content of the bulk oceanic crust of the Oman ophiolite is estimated to be 3.6 lg/g, and the d11B value... Spivack and Edmond, 1987; Spivack et al., 1987; Morris et al., 1990; Ishikawa and Nakamura, 1993, 1994; |  | Negishi, Hironori, Arai, Shoji, Yurimoto, Hisayoshi, Ito, Shoichi, Ishimaru, Satoko, Tamura, Akihiro, Akizawa, Norikatsu (2013) Sulfide-rich dunite within a thick Moho transition zone of the northern Oman ophiolite: Implications for the origin of Cyprus-type sulfide deposits. Lithos, 164. 22-35 doi:10.1016/j.lithos.2012.11.024 | Journal (article/letter/editorial) | | thick Moho transition zone of the northern Oman ophiolite: Implications for the origin of Cyprus-type...transition zone Cyprus-type sulfide deposits Oman ophiolite a b s t r a c t Peculiar dunites, in part...transition zone (MTZ) are found along Wadi Thuqbah in the northern Oman ophiolite. We discuss their relevance to...Mid-Atlantic Ridge (Hannington et al., 1998; Humphris and Cann, 2000; Humphris et al., 1995) as well as from ophiolites...ophiolites (e.g., Dergachev et al., 2010). Deep processes related to sea-floor sulfide deposit formation |  | Arai, Shoji, Miura, Makoto, Tamura, Akihiro, Akizawa, Norikatsu, Ishikawa, Akira (2020) Hydrothermal Chromitites from the Oman Ophiolite: The Role of Water in Chromitite Genesis. Minerals, 10 (3) 217 doi:10.3390/min10030217 | Journal (article/letter/editorial) | | Article Hydrothermal Chromitites from the Oman Ophiolite: The Role of Water in Chromitite Genesis Shoji...hydrothermal fluids, in the mantle to the crust of the Oman ophiolite. Here, we present petrologic characteristics...magmatic podiform chromitite by dominance of the Ca-Al silicates in the matrix. The fluids responsible for...(especially Pt and Pd). The fluids obtain Ca and Al from the crustal rocks and Cr from the mantle rocks...Keywords: hydrothermal chromitites; Ca-Al silicates; seawater; Oman ophiolite; slab-derived fluids; platinum-group |  | | Report (chapter) | | Plagiogranites from the mantle section of the Oman Ophiolite: models for early crustal evolution Hugh Rollinson...Plagiogranites from the mantle section of the Oman Ophiolite: models for early crustal evolution HUGH ROLLINSON...the harzburgites of the mantle section of the Oman Ophiolite are compositionally distinct from plagiogranites...plagiogranites in the crustal section of the ophiolite and are relatively enriched in MgO, Cr and Ni and in the...mantle wedge. This mantle interaction makes the Oman mantle plagiogranites a helpful analogue for understanding |  | | Journal (article/letter/editorial) | | of chromite by hydrothermal solutions in the Oman ophiolite: New behavior of Cr and chromite Shoji Arai*...metasomatically replacing the layered gabbro of the Oman ophiolite. The uvarovite shows oscillatory concentric...concentric zoning in terms of Cr no. [Cr/(Cr+Al)], and the chromite is embedded only in the high-Cr-no. zones...Mg/(Mg+Fe2+) = 0.1–0.2, TiO2 < 0.3 wt% and Fe3+/(Cr+Al+Fe3+), up to 0.3], but its Cr no. is clearly different...7) in peridotites and chromitites from the Oman ophiolite. The results from this study suggest that a |  | MCCULLOCH, M, GREGORY, R, WASSERBURG, G, TAYLORJR, H (1980) A neodymium, strontium, and oxygen isotopic study of the Cretaceous Samail ophiolite and implications for the petrogenesis and seawater-hydrothermal alteration of oceanic crust. Earth and Planetary Science Letters, 46 (2) 201-211 doi:10.1016/0012-821x(80)90006-0 | Journal (article/letter/editorial) | | OXYGEN ISOTOPIC STUDY OF THE CRETACEOUS SAMAIL OPHIOLITE AND IMPLICATIONS FOR THE PETROGENESIS AND SEAWATER-HYDROTHERMAL...version received October 18, 1979 In the Samail ophiolite, 147Sm-143Nd,87Rb-87Sr, and 180/160 isotopic systems...130 -+ 12 m.y. from Ibra and 100 -+20 m.y. from Wadi Fizh. These ages are interpreted as the time of formation...crust, as represented by the Samail ophiolite, Oman. The Samail ophiolite consists of (from b o t t o m to...in the late Cretaceous [ 1 - 4 ] . The Samail ophiolite crops out in a desert region and, therefore, provides |  | | Journal (article/letter/editorial) | | and stratigraphic distribution in the Semail Ophiolite, Oman Samuel Gilgen, Larryn W. Diamond, Ivan Mercolli...and stratigraphic distribution in the Semail Ophiolite, Oman, LITHOS (2016), doi: 10.1016/j.lithos.2016...and stratigraphic distribution in the Semail Ophiolite, Oman MA NU Samuel Gilgena, Larryn W. Diamond*a...mercolli@geo.unibe.ch Gilgen et al. "Timing of epidotization in Semail Ophiolite" Version 22May2016 1 ACCEPTED...epidotization of igneous rocks is a common feature in the ophiolite record of hydrothermally altered oceanic crust |  | | Report (chapter) | | zone in the mantle section of the northern Oman Ophiolite (Fizh Block): implications for flux melting of...whole rocks from the northern Fizh mantle section in the northern Oman Ophiolite to investigate the formation...varies from 90 to 92 whereas spinel Cr# (¼ Cr/(Cr + Al) atomic ratio) varies from 0.15 to 0.78. The Cr#...upper bound for abyssal peridotites. In the northern Fizh mantle section, highly refractory harzburgites with...infer a two-stage depletion process in the northern Fizh mantle section. In the first stage, asthenospheric |  | | Book | | GeoGuide Mike Searle Geology of the Oman Mountains, Eastern Arabia GeoGuide Series Editors Wolfgang...springer.com/series/11638 Mike Searle Geology of the Oman Mountains, Eastern Arabia 123 Mike Searle Department...grateful thanks for the wonderful life we had in Oman in the early days. It is also dedicated to all those...this amazing and wonderful country. Foreword Oman and the UAE possess several geological wonders that...Earth dynamic processes. Between the Oman Mountains in the north and the Dhofar Mountains in the south |  | Boudier, F., Bouchez, J.L., Nicolas, A., Cannat, M., Ceuleneer, G., Misseri, M., Montigny, R. (1985) Kinematics of oceanic thrusting in the Oman ophiolite: model of plate convergence. Earth and Planetary Science Letters, 75 (2) 215-222 doi:10.1016/0012-821x(85)90103-7 | Journal (article/letter/editorial) | | [51 Kinematics of oceanic thrusting in the Oman ophiolite: model of plate convergence F. B o u d i e...accepted July 8, 1985 Kinematics of early thrusting of Oman ophiolites is deduced using analysis of homogeneous...a two-step process in the case of the O m a n ophiolite [2,3] (Fig. 1). The first step referred to here...metamorphic sole of the ophiolite; it corresponds to oceanic thrusting of the future ophiolite pile in a closing...Hawasina basin; it corresponds to emplacement of the ophiolite onto the continental margin. The driving mechanism |  | Akizawa, Norikatsu, Tamura, Akihiro, Fukushi, Keisuke, Yamamoto, Junji, Mizukami, Tomoyuki, Python, Marie, Arai, Shoji (2016) High-temperature hydrothermal activities around suboceanic Moho: An example from diopsidite and anorthosite in Wadi Fizh, Oman ophiolite. Lithos, 263. 66-87 doi:10.1016/j.lithos.2016.07.012 | Journal (article/letter/editorial) | | example from diopsidite and anorthosite in Wadi Fizh, Oman ophiolite an Norikatsu Akizawa, Akihiro Tamura...example from diopsidite and anorthosite in Wadi Fizh, Oman ophiolite, LITHOS (2016), doi: 10.1016/j.lithos...example from diopsidite and anorthosite in Wadi Fizh, Oman ophiolite NU 1) Norikatsu Akizawa 1&2 3) Keisuke...gabbro have been reported along Wadi Fizh, northern NU Oman ophiolite. They are named mantle diopsidite...studies on the Oman ophiolite (e.g., Kawahata et al., 2001; Nicolas et al., 2003; Bosch et al., 2004; Yamaoka |  | Gilgen, S. A., Diamond, L. W., Mercolli, I., Al-Tobi, K., Maidment, D. W., Close, R., Al-Towaya, A. (2014) Volcanostratigraphic Controls on the Occurrence of Massive Sulfide Deposits in the Semail Ophiolite, Oman. Economic Geology, 109 (6) 1585-1610 doi:10.2113/econgeo.109.6.1585 | Journal (article/letter/editorial) | | the Semail Ophiolite, Oman Samuel A. Gilgen,1,† Larryn W. Diamond,1 Ivan Mercolli,1 Khalid Al-Tobi,2 David...David W. Maidment,3,* Robert Close,4 and Ahmed Al-Towaya5 1 Institute 2 Earth of Geological Sciences...Sultanate of Oman 3 Mawarid 4 Gentor Mining, P.O. Box 476, PC 321 Sohar, Sultanate of Oman Resources...Athaibah, Sultanate of Oman 5 Directorate General of Minerals, Muscat, Sultanate of Oman Abstract The Semail...Semail ophiolite in Oman is capped by up to 2 km of basaltic-andesitic lavas that host copper-dominant |  | | Journal (article/letter/editorial) | | 総 説 日本人による世界のオフィオライト研究 An overview of world ophiolite studies by Japanese researchers Abstract 海野 ...this paper. The Oman Mountains expose the world largest and best preserved ophiolite that provides insights...lithosphere to subarc crust and mantle. The Mirdita Ophiolite exposes mantle peridotites covered by mid-ocean...spreading to a subduction environment. The Luobusa Ophiolite is well-known for its ultrahigh-pressure minerals...with the overlying volcanic rocks. Another young ophiolite (6–5 Ma) of Taitao, southern Chile, was part of |  | | Report (chapter) | | constraints on the tectonic setting of the Oman Ophiolite Yuki Kusano, Maika Hayashi, Yoshiko Adachi...constraints on the tectonic setting of the Oman Ophiolite YUKI KUSANO1*, MAIKA HAYASHI2, YOSHIKO ADACHI3...geochemistry, the initial arc magmatism of the Oman Ophiolite consisting of tholeiitic lavas followed by...flows and tephras is studied in the Wadi Bidi area, northern Oman Mountains. An 1110-m-thick V2 sequence...was short lived and terminated long before the ophiolite obduction. Supplementary material: Locations, |  | | Journal (article/letter/editorial) | | rate in the mantle section of the Samail ophiolite in Oman: Implications for formation of lithosphere...M. Bickle Keywords: Mantle REE thermometry Oman ophiolite closure temperature geospeedometry a b s t...from the Wadi Tayin massif in the southern part of the Samail ophiolite in the Sultanate of Oman, which...fast-spreading ridge where the igneous crust of the Samail ophiolite formed. These observations are consistent with...demonstrating very rapid cooling rates in the crust of the Wadi Tayin massif. Our observations, combined with previous |  | | Journal (article/letter/editorial) | | formation of chromite-oversaturated magmas. Spandler et al. (2005) found a mixing trend for the bulk CE chemical...around the chromitite (e.g., Cassard et al., 1981; Lago et al., 1982) (Fig. 1). Following the hypothesis...Yurimoto, 1994; Zhou et 4 ACCEPTED MANUSCRIPT al., 1994) (Fig. 2). Since then, podiform chromitites...various types (e.g., Proenza et al., 1999; Uysal et al., 2005; Borisova et al., 2012; Ahmed and Habtoor, 2015)...ophiolites (e.g., Robinson et al., 2004; Yang et al., 2007, 2015; Yamamoto et al., MA 2009). The whole framework |
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