 | | Journal (article/letter/editorial) | | disordered sp3-carbon in the coesite-bearing Straumen Eclogite Pod, Norway D. C. SMITH1,2 AND G. GODARD3,4 1 Lab...C5-1 within zircon in phengite–kyanite–coesite eclogite sample 62a from the Straumen Eclogite Pod in the...the Western Gneiss Region (WGR), S.W. Norway. Graphitic carbon is always present with a degree of structural...rocks in general. This new locality of diamond at Straumen, the fourth in the WGR but the first in the southwestern...orthopyroxene-bearing eclogite types in the WGR. Key words: diamond; eclogite; Norway; Raman; UHPM. INTRODUCTION |  | | Journal (article/letter/editorial) | | themes discussed during the 9th International Eclogite Conference (Mariánské Lázně, Czech Republic...nanoscales. Papers presented at the 9th International Eclogite Conference (Mariánské Lázně, Czech Republic...graphitized diamond from the Straumen eclogite of Western Gneiss Region (WGR) of Norway, a Palaeozoic UHPM terrane...the same monocrystal. The finding of diamond at Straumen provides a minimum pressure estimate for UHP metamorphism...g eclogites. The authors hypothesize that the Straumen diamond was formed due to reduction of CO2, whether |  | Janák, M., Krogh Ravna, E. J., Kullerud, K., Yoshida, K., Milovský, R., Hirajima, T. (2013) Discovery of diamond in the Tromsø Nappe, Scandinavian Caledonides (N. Norway) Journal of Metamorphic Geology, 31 (6) 691-703 doi:10.1111/jmg.12040 | Journal (article/letter/editorial) | | the Tromsø Nappe, Scandinavian Caledonides (N. Norway) ,1 E. J. KROGH RAVNA,2 K. KULLERUD,2 K. YOSHIDA...Geology, University of Tromsø, Tromsø, N-9037, Norway 3 Department of Geology and Mineralogy, Graduate...kyanite, zoisite, rutile, tourmaline, amphibole, zircon, apatite and carbonates (magnesite, dolomite, calcite)...worldwide, i.e. the Western Gneiss region (WGR) in Norway (Dobrzhinetskaya et al., 1995); China (Xu et al...of the Scandinavian Caledonides in southwestern Norway, provided unequivocal evidence for © 2013 John |  | | Journal (article/letter/editorial) | | Song et al., 2005), the Western Gneiss Region, Norway (Dobrzhinetskaya et al., 1995; Vrijmoed et al....(2007) who found small diamond particles in Hadean zircon from the Jack Hills, Western Australia. The Jack...underneath a thick-enough crust. The detrital Jack Hills zircon however is generally assigned to originate from...even more extensive studies of Hadean Jack Hills zircon, no inclusions of microdiamond or other UHP phase...assumed assignment of diamond in the Jack Hills zircon to UHP metamorphism was finally disproved by Dobrzhinetskaya |  | | Journal (article/letter/editorial) | | Meta-anorthosite and related jotunites, Western Gneiss Region, Norway Spencer J. Cotkin Department of Geological Sciences...in the high-grade Western Gneiss Region (WGR) of Norway, and is adjacent to the 1.52 Ga Flat&et quartz...monzonite (mange&e). The WGR was metamorphosed to eclogite facies during Caledonian tectonism 414 &- 16 Ma...Seljeneset rocks display evidence of retrogression from eclogite through amphibolite facies. Meta-anorthosite consists...Mafic rocks vary from moderately well-preserved eclogite, through varieties containing symplectite, to |  | | Journal (article/letter/editorial) | | spectra of 52 microdiamond inclusions, and dated the zircon host. The zircons have low Th/U values (0.03–0...ureilite diamonds. The Erzgebirge microdiamonds in zircon do not display visible disordered sp3-carbon, but...exhumation of the UHP terrane. Graphite inclusions in zircon show a typical G-band at 1587 cm−1. Our study together...crystallization’. Inclusions of microdiamond in zircon, and other UHP minerals in several collisional...first described KEYWORDS polycrystalline diamond; zircon; Raman spectra; U–Pb age; diamondiferous quartzofeldspathic |  | | Journal (article/letter/editorial) | | High-pressure phengite decomposition in the Weissenstein eclogite, Miinchberger Gneiss Massif, Germany G. Franz...petro- genesis of a sample from the Weissenstein eclogite, Bavaria, Germany, has been investigated. The...biotite, apatite, pumpellyite, titanite (sphene), zircon, alkali feldspar and calcite. Textural observations...evolution of the rock. The main phengitequartz-eclogite mineral equilibration occurred at minimum P=13-17...the Weissenstein eclogite are in the same order of magnitude as those for other eclogite bodies from the |  | Janák, M., Froitzheim, N., Yoshida, K., Sasinková, V., Nosko, M., Kobayashi, T., Hirajima, T., Vrabec, M. (2015) Diamond in metasedimentary crustal rocks from Pohorje, Eastern Alps: a window to deep continental subduction. Journal of Metamorphic Geology, 33 (5) 495-512 doi:10.1111/jmg.12130 | Journal (article/letter/editorial) | | Cretaceous metamorphism up to greenschist facies, eclogite facies metamorphic rocks of Cretaceous age occur...Fodor et al., 2003; Kirst et al., 2010). Numerous eclogite bodies, partly amphibolitized, occur in the southeastern...age of eclogite facies metamorphism in the Pohorje nappe is documented by garnet Sm–Nd and zircon U–Pb...and micaschists (93– 87 Ma; Th€ oni, 2002) and zircon U–Pb on gneisses (92 0.5 Ma; Janak et al., 2009)...2009). Similar ages were determined for eclogite facies metamorphism in the Koralpe and Saualpe areas |  | DesOrmeau, Joel W., Gordon, Stacia M., Kylander-Clark, Andrew R.C., Hacker, Bradley R., Bowring, Samuel A., Schoene, Blair, Samperton, Kyle M. (2015) Insights into (U)HP metamorphism of the Western Gneiss Region, Norway: A high-spatial resolution and high-precision zircon study. Chemical Geology, 414. 138-155 doi:10.1016/j.chemgeo.2015.08.004 | Journal (article/letter/editorial) | | Western Gneiss Region, Norway: A high-spatial resolution and high-precision zircon study Joel W. DesOrmeau...Western Gneiss Region, Norway: A high-spatial resolution and high-precision zircon study, Chemical Geology...Western Gneiss Region, Norway: A high-spatial PT resolution and high-precision zircon study RI Joel W...(desormeau@nevada.unr.edu) 1 ACCEPTED MANUSCRIPT Key words Zircon; Laser ablation split-stream; Isotope dilution–thermal...spectrometry; AC CE P TE D MA NU SC RI PT Norway; Ultrahigh-pressure metamorphism 2 ACCEPTED |  | Gordon, Stacia M., Whitney, Donna L., Teyssier, Christian, Fossen, Haakon (2013) U–Pb dates and trace-element geochemistry of zircon from migmatite, Western Gneiss Region, Norway: Significance for history of partial melting in continental subduction. Lithos, 170. 35-53 doi:10.1016/j.lithos.2013.02.003 | Journal (article/letter/editorial) | | trace-element geochemistry of zircon from migmatite, Western Gneiss Region, Norway: Significance for history...of Earth Science, University of Bergen, Bergen, Norway a r t i c l e i n f o Article history: Received...online 16 February 2013 Keywords: Partial melting Eclogite U–Pb geochronology Trace elements Western Gneiss...Region (WGR), Norway, is dominated by migmatitic gneiss that contains inclusions of eclogite, some of which...migmatite and eclogite, we obtained LA–ICP–MS U–Pb dates and trace-element analyses for zircon from a variety |  | Klonowska, I., Janák, M., Majka, J., Petrík, I., Froitzheim, N., Gee, D. G., Sasinková, V. (2017) Microdiamond on Åreskutan confirms regional UHP metamorphism in the Seve Nappe Complex of the Scandinavian Caledonides. Journal of Metamorphic Geology, 35 (5) 541-564 doi:10.1111/jmg.12244 | Journal (article/letter/editorial) | | mineral assemblages that do not correspond to the eclogite facies but record lower pressure conditions. Often...garnet formed in quartzofeldspathic rocks under eclogite facies conditions may survive even severe retrogression...mountain belt in the Tromsø Nappe, in northern Norway (Ravna & Roux, 2006; Janák et al., 2012, 2013a)...hinterland, in the Western Gneiss Region of southwestern Norway (e.g. Smith, 1984; Dobrzhinetskaya et al., 1995;...Torneträsk) in Sweden and farther south, in southern Norway. Only HP eclogites have been found in Norrbotten |  | Petrík, I., Janák, M., Froitzheim, N., Georgiev, N., Yoshida, K., Sasinková, V., Konečný, P., Milovská, S. (2016) Triassic to Early Jurassic (c. 200 Ma) UHP metamorphism in the Central Rhodopes: evidence from U-Pb-Th dating of monazite in diamond-bearing gneiss from Chepelare (Bulgaria) Journal of Metamorphic Geology, 34 (3) 265-291 doi:10.1111/jmg.12181 | Journal (article/letter/editorial) | | Thermobarometric evidence for UHPM comes from kyanite eclogite in the Pirin Mts. (Fig. 1), which has preserved...2016; Wawrzenitz et al., 2015). In particular, zircon U–Pb ages of c. 160 to 150 Ma are interpreted controversially...in view of the tendency of zircon to dissolve at the amphibolite/eclogite transition before UHPM, and...metamorphism in the Kechros-Byala Reka Dome reached eclogite facies and was overprinted by lower amphibolite...(2005) and Krenn et al. (2010) determined U–Pb zircon ages on garnetkyanite gneisses from the area north |  | | Journal (article/letter/editorial) | | in garnet from the Almklovdalen peridotite, SW Norway Dirk Spengler, Herman L.M. van Roermund, Franziska...in garnet from the Almklovdalen peridotite, SW Norway, LITHOS, https:// doi.org/10.1016/j.lithos.2019...garnet from the Almklovdalen peri- 3 dotite, SW Norway 4 Dirk Spengler, Herman L. M. van Roermund, Franziska...in garnet from the Almklovdalen peridotite, SW Norway 13 Dirk Spenglera,∗, Herman L. M. van Roermundb...western part of the Western Gneiss Region (WGR), SW Norway. The garnetite 24 sample is a non-deformed clot |  | | Journal (article/letter/editorial) | | distributions from the Western Gneiss Region of Norway (KonradSchmolke et al. 2008), Himalayan majorites...eclogitic rocks from the Western Gneiss Region (Norway) using a separate forward-calculation approach...Garnet peridotite, Otrøy, Western Gneiss Region, Norway (Van Roermund et al. 2000); (5) Yangkou mafic-ultramafic...peridotites, Czech Republic (Vrána 2008); (7) Eclogite xenoliths, Premier Kimberlite (Dludla et al. 2006);...granulite, Western Gneiss Region, Norway (Larsen et al. 1998); (10) Eclogite, Junan, Sulu Terrain (Zhang et |  | | Journal (article/letter/editorial) | | Smith et al., 2011); the Western Gneiss Region, Norway (Dobrzhinetskaya et al., 1995; van Roermund et...lawsonite–blueschist facies (Combin Zone) and eclogite facies (Zermatt–Saas Zone) Alpine metamorphic...(7) Coesite- eclogite and metasediment (Lago di Cignana Unit); (8) Zermatt–Saas Zone eclogite and metagabbro...derived from pseudosections using metabasite and eclogite rock samples (Groppo et al., 2009). The maximum...metamorphic rocks of the Western Gneiss Region in Norway. Geology 23, 597–600. Dobrzhinetskaya L. F., Green |  | | Journal (article/letter/editorial) | | MINERALS IN ECLOGITES FROM THE WESTERN GNEISS REGION, NORWAY 1. Petrology of the Oxide Microassemblages M I...minerals in eclogites from the Western Gneiss Region, Norway, 1. Petrology of the oxide microassemblages. In:...from ten different eclogite pods in the Western Gneiss Region of southern Norway have been examined by...ilmenite and rutile, as oxide phases stable in eclogite-facies parageneses in appropriate local bulk-rock...initial eclogite-facies equilibration; (f) further petrological evidence to distinguish the eclogite pods |  | Xiong, Fahui, Liu, Zhao, Kapsiotis, Argyrios, Yang, Jingsui, Lenaz, Davide, Robinson, Paul T. (2019) Petrogenesis of lherzolites from the Purang ophiolite, Yarlung-Zangbo suture zone, Tibet: origin and significance of ultra-high pressure and other ‘unusual’ minerals in the Neo-Tethyan lithospheric mantle. International Geology Review, 61 (17) 2184-2210 doi:10.1080/00206814.2019.1584771 | Journal (article/letter/editorial) | | moissanite, native Cr] and crustal-derived minerals (zircon, corundum, rutile), has been separated from the...(SHRIMP) II at the Beijing SHRIMP Center, CAGS. Zircon crystals were handpicked, mounted, cast in epoxy...analysis. The procedure for the isotopic analysis of zircon was similar to that described by Williams (1998)...(Cr), oxides (corundum, rutile) and silicates (zircon). UHP and sur minerals Diamond A total of 82 grains...(Figure 10(d)). Some rutile grains host tiny (≤10 μm) zircon inclusions (Figure 10(c)). The structural and spectral |
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