1-20 OF 154 RESULTS FOR

Neyriz Ophiolite

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article
Published: 27 February 2006
Canadian Journal of Earth Sciences (2006) 43 (1): 57–70.
...Hassan A. Babaie; Abbed Babaei; A. Mohamad Ghazi; Mohsen Arvin Abstract Trace-element data (including the rare-earth elements) in the crustal sequence of the Neotethyan Neyriz ophiolite in southwest Iran indicate normal mid-ocean ridge basalt (N-MORB) or island-arc tholeiite chemistry for the Tang...
FIGURES | View All (7)
Series: Geological Society, London, Special Publications
Published: 01 January 2003
DOI: 10.1144/GSL.SP.2003.218.01.08
EISBN: 9781862394667
... Abstract The Neyriz ophiolite in SW Iran includes a NNW-SSE-trending, steeply dipping oceanic palaeo-transform fault zone that consists mainly of deformed and sheared gabbros and peridotites. Mylonitic rocks within the fossil palaeo-transform fault display C-, C′- and S-band shear cleavages...
FIGURES | View All (10)
Journal Article
Journal: GSA Bulletin
Published: 01 January 1976
GSA Bulletin (1976) 87 (1): 47–52.
...A. HALLAM Abstract New investigations in the Neyriz region of Iran provide support for the hypothesis that Mesozoic radiolarite and ophiolite have been thrust southwestward as nappe complexes over the autochthonous Cretaceous carbonate platform deposits directly south of the Zagros Crush Zone...
Image
Figure 2.
Published: 29 June 2012
Figure 2. Geological map of the Neyriz ophiolite and studied tectonic mélange. The location of the study area is shown in Figure 1 .
Image
Chondrite normalized PGE pattern of chromitites from the Neyriz ophiolite (chondrite values after McDonough & Sun 1995).
Published: 01 June 2012
Fig. 4 Chondrite normalized PGE pattern of chromitites from the Neyriz ophiolite (chondrite values after McDonough & Sun 1995 ).
Journal Article
Published: 01 June 2012
The Canadian Mineralogist (2012) 50 (3): 643–665.
...Fig. 4 Chondrite normalized PGE pattern of chromitites from the Neyriz ophiolite (chondrite values after McDonough & Sun 1995 ). ...
FIGURES | View All (11)
Image
(a) Composition of chromitites from different levels of the Neyriz ophiolite in Cr-ratio versus Mg-ratio diagram (after Mukherjee et al. 2010), red circles: cumulate samples, green diamonds: samples from the top of the transition zone (TTZ), blue stars: samples from the base of the transition zone (BTZ), orange squares: samples from the deep mantle section (DMS). Several points were plotted over each other in this diagram because of similar values. (b) TiO2-Al2O3 variation in chromian spinels from the Neyriz ophiolite with respect to tectonic setting (after Mukherjee et al. 2010); OIB: ocean-island basalt, LIP: large igneous province. Many of the TTZ, BTZ and DMS samples plot out of the chart area because of their very low TiO2 contents.
Published: 01 June 2012
Fig. 3 (a) Composition of chromitites from different levels of the Neyriz ophiolite in Cr-ratio versus Mg-ratio diagram (after Mukherjee et al. 2010 ), red circles: cumulate samples, green diamonds: samples from the top of the transition zone (TTZ), blue stars: samples from the base
Journal Article
Published: 01 February 2016
Mineralogical Magazine (2016) 80 (1): 127–142.
... and basaltic rocks, which cap the ophiolite sequences. The present work provides a review on the rare-earth element ( REE ) geochemistry coupled with major- and trace-element geochemical characteristics of the Nasirabad and Abadeh Tashk manganese deposits (associated with the Neyriz ophiolite), and Sorkhvand...
FIGURES | View All (8)
Image
Schematic model of PGM and BMM mineralization hosted by chromitite in Neyriz ophiolite. PGE and other elements enter the melt during upper mantle partial melting. Chromian spinel is among the first minerals which form, and contain the PGM and BMM that crystallize under the same physico-chemical conditions. The different PGM types indicate the evolution of mineralizing melt in the ophiolite column at Neyriz.
Published: 01 June 2012
Fig. 11 Schematic model of PGM and BMM mineralization hosted by chromitite in Neyriz ophiolite. PGE and other elements enter the melt during upper mantle partial melting. Chromian spinel is among the first minerals which form, and contain the PGM and BMM that crystallize under the same physico
Image
(A) Comparison of Ti/V for Dehshir ophiolite lavas with other inner belt ophiolitic lavas (data from Shafaii Moghadam, 2009), (B) with lavas from a typical outer belt ophiolite, the Neyriz ophiolite (data from Jannessary, 2003), and (C) with boninites from Izu-Bonin-Mariana forearc (Pearce et al., 1992) and Betts Cove ophiolites (Bédard, 1999). Nearly all lavas from the inner ophiolitic belt plot in island-arc tholeiitic (IAT) and boninite fields, while the Neyriz lavas are distinguished by higher, mid-ocean-ridge basalt (MORB)–like Ti/V.
Published: 01 September 2010
Figure 14. (A) Comparison of Ti/V for Dehshir ophiolite lavas with other inner belt ophiolitic lavas (data from Shafaii Moghadam, 2009 ), (B) with lavas from a typical outer belt ophiolite, the Neyriz ophiolite (data from Jannessary, 2003 ), and (C) with boninites from Izu-Bonin-Mariana forearc
Image
Principal geological features and ophiolites of Iran. (a) Map showing the distribution of the inner (Nain–Dehshir–Baft–Shahr-e-Babak) and outer (Kermanshah–Neyriz–Haji–Abad) Zagros ophiolitic belts, the location of the Urumieh–Dokhtar magmatic arc (Eocene–Quaternary), and Main Zagros Thrust (MZT). (b) Schematic cross-section showing the relationship between outer and inner Zagros ophiolitic belts and the Zagros thrust–fold belt (after Shafaii Moghadam et al. 2010). U–Pb and previous K–Ar and 40Ar–39Ar ages are shown. K–Ar and U–Pb zircon ages for the Nain and Dehshir ophiolites are from Shafaii Moghadam et al. (2009) and this study, respectively; K–Ar ages for the Kermanshah ophiolites are from Delaloye & Desmons (1980), and for Neyriz ophiolites are from Lanphere & Pamic (1983), Jannessary (2003) and Babaie et al. (2006).
Published: 01 January 2013
Fig. 2. Principal geological features and ophiolites of Iran. ( a ) Map showing the distribution of the inner (Nain–Dehshir–Baft–Shahr-e-Babak) and outer (Kermanshah–Neyriz–Haji–Abad) Zagros ophiolitic belts, the location of the Urumieh–Dokhtar magmatic arc (Eocene–Quaternary), and Main Zagros
Image
Temperature (T) versus sulfur fugacity (log fS2) curves indicating alloy-sulfide equilibrium, after Stockman & Hlava (1984). The arrow shows the proposed magmatic evolution trend of fS2-T in the Neyriz ophiolite.
Published: 01 June 2012
Fig. 10 Temperature (T) versus sulfur fugacity (log f S 2 ) curves indicating alloy-sulfide equilibrium, after Stockman & Hlava (1984) . The arrow shows the proposed magmatic evolution trend of f S 2 -T in the Neyriz ophiolite.
Image
Schematic model showing the opening and evolution of the Khoy back-arc basin with regard to the Zagros, Neotethyan Ocean (modified after Dercourt et al. 1986; Kazmin et al. 1986). BSB, Black Sea Basin; GCB, Great Caucasus Basin; SCB, South Caspian Basin; KB, Khoy Basin; KR, Kermanshah ophiolite; NY, Neyriz ophiolite; OM, Oman ophiolite; UDMB, Urumieh–Dokhtar magmatic belt; MZT, Main Zagros Thrust.
Published: 05 February 2019
, Kermanshah ophiolite; NY, Neyriz ophiolite; OM, Oman ophiolite; UDMB, Urumieh–Dokhtar magmatic belt; MZT, Main Zagros Thrust.
Image
Composition of PGE sulfides and Os-Ir alloys in chromitites from different levels of the Neyriz ophiolite. Red circles: cumulate samples; blue rectangles: TTZ samples; green triangle: BTZ samples; yellow star: DMS sample; orange diamonds: PGE alloys.
Published: 01 June 2012
Fig. 6 Composition of PGE sulfides and Os-Ir alloys in chromitites from different levels of the Neyriz ophiolite. Red circles: cumulate samples; blue rectangles: TTZ samples; green triangle: BTZ samples; yellow star: DMS sample; orange diamonds: PGE alloys.
Image
Paleogeographic sketch maps envisage collision along the Zagros orogen. (A) Comparison between western (Lurestan region) and eastern (Fars region) parts of Zagros orogeny. These data were integrated from Homke et al. (2010); Mouthereau et al. (2012); Khadivi et al. (2012); and Pirouz (2013). (B) The Paleocene-Eocene in the Lurestan region. (C) The Paleocene-Eocene in the Fars region. (D) Earlier collision in the Lurestan and Kermanshah regions. (E) Later collision in the Fars and Neyriz regions (modified from Barrier et al., 2014). SaSZ—Sanandaj-Sirjan Zone; ZCZ—Zagros Crush Zone; SCB—South Caspian Basin; KO—Kermanshah ophiolite; NO—Neyriz ophiolite; Am.F—Amiran Formation; Sa.F—Sachun Formation; Ra.F—Razak Formation; As.f—Asmari Formation.
Published: 08 November 2021
Crush Zone; SCB—South Caspian Basin; KO—Kermanshah ophiolite; NO—Neyriz ophiolite; Am.F—Amiran Formation; Sa.F—Sachun Formation; Ra.F—Razak Formation; As.f—Asmari Formation.
Image
Chondrite-normalized rare earth element (REE; left) and normal (N) mid-ocean-ridge basalt–normalized (MORB; right) trace-elements patterns of Dehshir ophiolitic lavas and diabasic dikes injected into peridotite, compared with lavas from other inner ophiolite belt (A, B), outer ophiolite belt (C, D), Geotimes and Lasail units of Oman ophiolite (E, F) and Izu-Bonin-Mariana (IBM) forearc and Betts Cove ophiolite boninites (G, H; see text for more detail). Data are after Jannessary (2003) for the Neyriz ophiolite, after Alabaster et al. (1982) and Godard et al. (2003) for Oman lavas, and from Pearce et al. (1992) and Pagé et al. (2009) for Izu-Bonin-Mariana forearc and Betts Cove (BC) ophiolite boninites, respectively.
Published: 01 September 2010
ophiolite belt (C, D), Geotimes and Lasail units of Oman ophiolite (E, F) and Izu-Bonin-Mariana (IBM) forearc and Betts Cove ophiolite boninites (G, H; see text for more detail). Data are after Jannessary (2003) for the Neyriz ophiolite, after Alabaster et al. (1982) and Godard et al. (2003) for Oman
Image
Geological map of the northern Fars area, modified after Sheikholeslami et al. (2008), including the Neyriz ophiolitic complex and the low- and high-grade metamorphic belts of the Sanandaj–Sirjan Zone. 40Ar/39Ar radiometric datings of the Quri metamorphic mélange is from Haynes & Reynolds (1980) and Sarkarinejad et al. (2009). Ages of the Chah-Gozdan and Chah-Ghand plutonic massifs are from Sheikholeslami et al. (2008).
Published: 01 January 2012
Fig. 4. Geological map of the northern Fars area, modified after Sheikholeslami et al . (2008) , including the Neyriz ophiolitic complex and the low- and high-grade metamorphic belts of the Sanandaj–Sirjan Zone. 40 Ar/ 39 Ar radiometric datings of the Quri metamorphic mélange is from Haynes
Image
(a) Homogenous harzburgite (Hz) intruded by a microgabbro dyke (Gb). (b) Transition zone including harzburgite (Hz) and dunite lens (Du). (c) Cumulative dunite (Du) was overthrusted by transition harzburgite (Hz) at the top of the ultramafic rocks in the Neyriz ophiolite. (d) Foliated harzburgite. (e) Porphyroblastic texture in harzburgite with kink-banded orthopyroxene porphyroblasts (Opx) within serpentine matrix (Srp). (f) Amoeboid chromian spinel (Chr) within serpentine matrix (Srp) in harzburgite. (g) Euhedral to subhedral chromian spinel grains (Chr) in massive chromitites. (h) Orientation of chromian spinel nodules parallel to the host rock foliation.
Published: 01 June 2012
Fig. 2 (a) Homogenous harzburgite (Hz) intruded by a microgabbro dyke (Gb). (b) Transition zone including harzburgite (Hz) and dunite lens (Du). (c) Cumulative dunite (Du) was overthrusted by transition harzburgite (Hz) at the top of the ultramafic rocks in the Neyriz ophiolite. (d) Foliated
Image
New U-Pb age data are integrated with literature data. (A) U-Pb age frequency diagram for the Neyriz ophiolite (ca. 95 Ma; Monsef et al., 2018). (B) U-Pb age frequency diagram shows the main magmatic events in the Sanandaj-Sirjan Zone at ca. 40 Ma and ca. 170 Ma (data after Zhang et al., 2018). (C, D, E) U-Pb detrital zircon data from the Lurestan province (after Zhang et al., 2017; Barber et al., 2019). (F) Hf isotopic data from zircons of the Lurestan region. The pale purple area shows the zircons of the Amiran and Kashkan Formations. The pale green and red areas display samples from the Miocene onward.
Published: 08 November 2021
Figure 5. New U-Pb age data are integrated with literature data. (A) U-Pb age frequency diagram for the Neyriz ophiolite (ca. 95 Ma; Monsef et al., 2018 ). (B) U-Pb age frequency diagram shows the main magmatic events in the Sanandaj-Sirjan Zone at ca. 40 Ma and ca. 170 Ma (data after Zhang et
Journal Article
Journal: GSA Bulletin
Published: 08 November 2021
GSA Bulletin (2022) 134 (7-8): 1793–1810.
... Crush Zone; SCB—South Caspian Basin; KO—Kermanshah ophiolite; NO—Neyriz ophiolite; Am.F—Amiran Formation; Sa.F—Sachun Formation; Ra.F—Razak Formation; As.f—Asmari Formation. ...
FIGURES | View All (8)