 | 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) | | Semail Ophiolite, Oman Samuel A. Gilgen,1,† Larryn W. Diamond,1 Ivan Mercolli,1 Khalid Al-Tobi,2 David W...W. Maidment,3,* Robert Close,4 and Ahmed Al-Towaya5 1 Institute 2 Earth of Geological Sciences, University...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) | | com/loi/tigr20 Copper Mineralizations in the Ophiolite of Oman: The Genesis and Emplacement Relationship with the...(1997) Copper Mineralizations in the Ophiolite of Oman: The Genesis and Emplacement Relationship with the...reserved. Copper Mineralizations in the Ophiolite of Oman: The Genesis and Emplacement Relationship with the...mineralizations (mostly Fe-Cu sulfides) in the ophiolite of Oman appears to be closely related to successive orogenic...peridotite, along the axial trend of the mountains of Oman, resulted from pressure exerted during the counterclockwise |  | | Report (chapter) | | origin of large plagiogranite bodies in northern Oman, and their relationship to the overlying massive...well-preserved and well-exposed Semail ophiolite of northern Oman hosts several large plagiogranite intrusions in...and adjacent to the major ore bodies in northern Oman. The ubiquitous presence of metamorphic actinolitic...composite intrusions. The Semail ophiolite in northern Oman is the largest, best-preserved and best-exposed...& Hopson 1981; Alabaster et al. 1982; Lippard et al. 1986; Nicolas et al. 1994). This magrnatic history |  | | Journal (article/letter/editorial) | | Magmatic and Ore-Forming Hydrothermal Processesin the Oman Ophiolite T. ALABASTEB AND J. A. PEARCE* Departmentof...KeynesMK7 6AA, England Abstract The Semailophioliteof Oman containsnumerousgossans, minor sulfideshowings,and... thoughlessdetailed, studiesof other depositsin Oman indicatethat: only very smallmounddepositslie within...usefulconstraiutsfor future mineral explorationprogramsin the Oman and perhapsalsoin other ophiolitecomplexesand on...acceptedthat subaxisand off-axis 21 ø N (Ballardet al., 1981) and the Galapagosrift magma chambersprovide |  | | Report (issue) | | (IR) SA-37 MINERAL RECONNAISSANCE OF THE BIR AL BAYDA 1 QUADRANGLE, NORTHWEST HLJAZ, SAUDI ARABIA by...nomenclature. 1968 MINERAL RECONNAISSANCE OF THE BIR AL BAYDA 1 QUADRANGLE, NORTHWEST HLJAZ, SAUDI ARABIA by...GEOLOGICAL SURVEY MINERAL RECONNAISSANCE OF THE SIR AL RAYDA' QUADRANGLE NORTHWEST HIJAZ, SAUDI ARABIA by...the results of these investigations in the Bi*r Al Bayda' quadrangle in Northwest Hijaz. The field work...part of the trip. The Bi'r Al Bayda1 quadrangle lies between 26°30' and 27° North latitude and between 36° |  | 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) | | within a thick Moho transition zone of the northern Oman ophiolite: Implications for the origin of Cyprus-type...Moho transition zone Cyprus-type sulfide deposits Oman ophiolite a b s t r a c t Peculiar dunites, in...(MTZ) are found along Wadi Thuqbah in the northern Oman ophiolite. We discuss their relevance to the formation...composite grains with magnetite and form angular clasts, which are enclosed or cut by magnetite. The sulfide part...comprise pyrrhotite with pentlandite blebs, free of magnetite. Olivines in the sulfide-rich dunite characteristically |  | 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...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...nascent subduction zones. The Semail ophiolite (Oman–U.A.E.) in particular can be viewed as an analogue...sequences of many Tethyan ophiolites – including the Oman–U.A.E. (Semail) example – formed in response to |  | | Report (chapter) | | and that the nappe extends beneath most of the Batinah coastal plain probably with its tapering trailing...trailing edge close to the present Gulf of Oman coastline. Marked structural thinning and imbrication of the...n M o u n t a i n s from near D i b b a in the north to near Sur in the I I 58~ Sheeted dykes and extrusives...Sarami, 4. Haylayn, 5. Rustaq, 6. Ibra (Hopson et al. 1981). Maximum and minimum thicknesses for Layered...upward protrusion of melange from beneath (Lippard et al, 1983; Robertson & Woodcock 1983b, Section 4.3.3 |  | | Book | | convert, refine and treat whatever you want to mine. From the initial evaluation and planning to the...spelling has been used: Abu instead of Abou, Bou Al instead of El Gabal instead of Jebel, Gebel, Djebel...Dhahab; Hofrat An Nahas has been changed to Hofrat Al Nahas, etc. MINERAL RESOURCES OF THE ARAB COUNTRIES...Solomon's mines are nothing but an ancient copper mine exploited by the ancient Egyptians. A temple dedicated... Sharjah, and Um AI Qaiwan. The Sheikhdom of Ras Al Khaimah accepted federation membership in 1972, |  | | Report (issue) | | INTRODUCTION During a mineral reconnaissance of the Bi'r al Bayda1 quadrangle (Johnson and [rent, 1966) a few...accompanying map. Subsequently a trip was made to fadi Al Farra'ah in the eastern part of the Wadi Azlam quadrangle...bodies of magnetite occur in gabbroic rocks in the same area. The ground survey in the Wadi Al Farra'ah...disclose any radioactivity and only disseminated magnetite. GEOLOGY Granitic rocks predominate in the southern...intersect the major wrench faults described in the Bi'r Al Bayda1 quadrangle. The fault that passes through |  | | Report (issue) | | ............................................. 14 Al Lith belt volcanic and sedimentary rocks, ~850-810.............................................. 21 Bayda group, age uncertain........................................................................... 22 Al Qunnah formation, >745 Ma....................................................................... 22 Al Ays group, <745->700 Ma ........................................................................ 27 Al Amar group, >690 Ma ............................ |  | | Book | | is especially tiresome in harder minerals like magnetite, haematite, pyrrhotite and pyrite, for those with...for ‘massive’ galena, pyrite, sphalerite and magnetite-bearing ores. After polishing at 6 jum, the section...minerals take a poor polish, due to their hardness (magnetite) or structural anisotropy. Other minerals pluck...minerals contain quartz, pyrite, marcasite, magnetite or haematite and with a layered structure can...boundaries and the grain sizes of isotropic minerals magnetite and ilmenite burnish to colours more reminiscent |  | Yıldırım, Nail, Dönmez, Cahit, Kang, Jisuk, Lee, Insung, Pirajno, Franco, Yıldırım, Esra, Günay, Kurtuluş, Seo, Jung Hun, Farquhar, James, Chang, Se Won (2016) A magnetite-rich Cyprus-type VMS deposit in Ortaklar: A unique VMS style in the Tethyan metallogenic belt, Gaziantep, Turkey. Ore Geology Reviews, 79. 425-442 doi:10.1016/j.oregeorev.2016.05.021 | Journal (article/letter/editorial) | | A magnetite-rich cyprus-type VMS deposit in ¡!–[INS][o]–¿O¡!–[/INS]– ¿rtaklar: A unique... Jung Hun, Farquhar, James, Chang, Se Won, A magnetite-rich cyprus-type VMS deposit in ¡!–[INS][o]–¿O¡...the journal pertain. ACCEPTED MANUSCRIPT A MAGNETITE-RICH CYPRUS-TYPE VMS DEPOSIT IN ORTAKLAR: A UNIQUE...mineral abundances decrease in the order of pyrite, magnetite, chalcopyrite, and sphalerite. Two distinct phases...phases of mineralisation, massive magnetite and massive sulphide, are present in the Ortaklar deposit |  | | Journal (article/letter/editorial) | | stratigraphic distribution in the Semail Ophiolite, Oman Samuel Gilgen, Larryn W. Diamond, Ivan Mercolli...stratigraphic distribution in the Semail Ophiolite, Oman, LITHOS (2016), doi: 10.1016/j.lithos.2016.05.014...stratigraphic distribution in the Semail Ophiolite, Oman MA NU Samuel Gilgena, Larryn W. Diamond*a, Ivan...631 3881 E-Mail: mercolli@geo.unibe.ch Gilgen et al. "Timing of epidotization in Semail Ophiolite" Version...spreading. Our mapping of the Semail ophiolite SC R in Oman has revealed abundant epidosites in the volcanic |  | | Journal (article/letter/editorial) | | Coexisting sulfide mineral pairs from the Rua Cove Mine, Alaska, show that isotopic equilibrium exists in...found in samples from the amphibolite facies Balmat Mine, while isotopically heterogeneous pyrite crystals...sample from the upper greenschist facies Sullivan Mine. Sulfur-isoto~ zonation up to 2.9%0 in 200 pm was...sphalerite blacksmoker chimney material from the Bayda Mine (Oman). Retrograde sulfides from the Marcy Anorthosite...the laser microprobe have been published. FRANCHIet al. ( 1985) extracted N isotopes from synthetic TiN |  | | Journal (article/letter/editorial) | | sulfidehydrothermal alteration systems. Introduction 1981;Lesheret al., 1986;Galley,1993)and/ora sourcefor at least some...thathoststhe volcanogenie massive sulfide Hannington et al., 1995),andin back-arc basins(Binnsand ingvolcanic...Archcan to Phanerozoic mineralizedterranes(Franklin et al., 1981;Ohmoto and Skin- 1985;Bailesand Galley,1996)...complete of theconvective oresystems (Solomon et al., ner,1983;Large,1992).Hydrothermal alteration systems...subvolcanic intrusions arecommonly implicated as al.,1995).Themineralized section fromtheunderlying subvolcanic |  | | Journal (article/letter/editorial) | | plagioclase, augite, hornblende, orthopyroxene, magnetite and ilmenite (Brophy in Contrib Mineral Petrol...low-K2O rhyolite (e.g. Malpas 1979; Lippard et al. 1986; Niu et al. 2002). Historically, the more SiO2-rich...over the exact meaning of this term (see Koepke et al. 2007 for a review). Many workers have concluded...Aldiss 1981; Lippard et al. 1986; Floyd et al. 1998; Beccaluva et al. 1999; Niu et al. 2002). Ample experimental...Juster et al. 1989; Thy and Lofgren 1994; Dixon-Spulber and Rutherford 1983; Berndt et al. 2005). Others |  | Overstreet, W.C., Kiilsgaard, T.H., Grolier, M.J., Schmidt, D.L., Domenico, J.A., Donato, M.M., Botinelly, Theodore, Harms, T.F. (1985) Contributions to the geochemistry, economic geology, and geochronology of the Yemen Arab Republic. Open-File Report Vol. 1985 (85-755) US Geological Survey doi:10.3133/ofr85755 | Report (issue) | | 53 Jabal Al Maidan open-pit iron mine ................... Jabal Al Ma'aden open-pit iron mine ..................... Jabal Ayub circular shaft mine ....................... Pyritic andesine gabbro from Wadi...Wadi Agnam .............. Slag from iron smelting at Al Shatt .................. Manakhah area ............SA'DAH AREA ............................ Jabal Al Maidan mine ......................................... Surface...Jabal Al Maidan and similar deposits ................................... Jabal Al Ma'aden mine ..... |  | | Report (issue) | | niobium-zirconium deposit (Lalande, 1977)'and the Baid al Jimalah West tungsten deposit (Cole and others, 19810;...1931)* Granitic is used as a general composition-al modifer to describe all granites plus granodiorites...calc-silicate minerals and ironbearing minerals such as magnetite, pyrite, or pyrrhotite. Skarn deposits may also...columbitetantalite, and beryl. Certain minerals, including magnetite, ilmenite, rutile, and epidote, are atypical of...greater distibution of postorogenic granites to the north and east in the Shield is shown in figure 1. Greenwood |  | | Journal (article/letter/editorial) | | WesternJurassicbelt and hasbeen dated at 157 ___ 2 m.y. (Saleebyet al., 1982). The ophiolitestratigraphyis asfollows(in...Nevadanorogeny(150 m.y.)(Harper, 1980, 1984, 1986; Saleebyet al., 1982). Post-Nevadandeformationwas associated with...zones)areslightlyenechelon,possibly dueto faulting, alonga north-northeast trend.The UpperHigh-Grade podsandthe Main...flows. Weak to moderate sulfide mineralization north, whereas the Main Lower zone extends to the occursbelow...probablyrepresentedby a smallgossan pit andironthe north by at leastseveralfaults(F2, Fa, F4) rep- stained |  | | Book | | bin Said Al Shanfari Minister of Petroleum and Minerals The Speech of H.E. Said Bin Ahmed Al Shanfari...Symposium Your Royal Highness Sayed Fahad Bin Mahmoud al Said, Your Royal Highness Members of the Honourable...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... I wish to thank the Ministry of Defence, Royal Oman Police and the Ministry of Information for their |  | | Journal (article/letter/editorial) | | Collins and Pisarevsky, 2005; Tohver et al., 2006; Pisarevsky et al., 2008). The closure of the Mozambique...1985; Stern and Johnson, 2010; Johnson et al., 2011; Robinson et al., 2015a,b) accreted during the Cryogenian...Ediacaran (Johnson and Kattan, 2008; Johnson et al., 2011; Cox et al., 2012) with, at least one, pre-Neoproterozoic...crustal block (Whitehouse et al., 2001; Collins and Windley, 2002; Hargrove et al., 2006). The ArabianNubian...Geosciences (Beijing). Ar Rayn Terrane (Johnson et al., 2011). Further east, the extensive Phanerozoic |  | MERCOLLI, I, BRINER, A, FREI, R, SCHONBERG, R, NAGLER, T, KRAMERS, J, PETERS, T (2006) Lithostratigraphy and geochronology of the Neoproterozoic crystalline basement of Salalah, Dhofar, Sultanate of Oman. Precambrian Research, 145 (3) 182-206 doi:10.1016/j.precamres.2005.12.002 | Journal (article/letter/editorial) | | crystalline basement of Salalah, Dhofar, Sultanate of Oman Ivan Mercolli a,∗ , Andreas P. Briner b , Robert...Bern, Switzerland South Rub Al-Khali Company Limited, P.O. Box 20801, Al-Khobar 31952, Kingdom of Saudi...basement of the Salalah area (Dhofar, Sultanate of Oman) is the largest portion of Proterozoic basement...basement of the Arabian-Nubian Shield outcropping in Oman. This paper presents new geochronological data and...Crystalline basement; Geochronology; Lithostratigraphy; Oman; Salalah 1. Introduction ∗ Corresponding author |  | | Journal (article/letter/editorial) | | 1976; Fleck etal. 1980; Gass 1979, 1981; Roobol et al. 1983). Calc-alkaline plutonism is closely linked...method, are described by Walsh (1980) and Walsh et al. (1981). FeO and F were determined by titration and...tabulated results are given elsewhere* (Jackson et al. in press) and only synoptic tables are given herein...Provinces based on Camp (in press) and Stoeser et al. (in press) province that are related chemically...recognized (Pellaton 1979, 198I, 1982; Clark 1981; Kemp et al. 1982; Camp, in press [a]): (1) greywacke, pelite |  | | Journal (article/letter/editorial) | | Melson et al., 1968; Cann, 1969; Miyashiro et al., 1971; Bonatti et al., 1975; Robinson et al., 1977; Humphris...Humphris et al., 1980; Honnorez, 1981; Alt et al., 1986). Only the uppermost parts of the oceanic crust...reserved SSDI0009-2541 (93)E0238-0 236 E. Valsami et al. / Chemical Geology 114 (1994) 235-266 rently accessible...ridge axes (e.g., Edmond et al., 1979; Von Datum et al., 1985a, b; Campbell et al., 1988 a,b). (b) Experimental...Sheppard, 1977; Spooner et al., 1977; Richardson et al., 1987; Harper et al., 1988 ). The advantages of |
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