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| recorded in high pressure rocks (Syros, Cyclades, Greece) B. Putlitza,*, M.A. Coscaa,1, J.C. Schumacherb...Syros (Greece) have been dated by the in situ UV-laser ablation 40Ar/39Ar method. A massive, phengite-rich...in these samples range from 43 to 50 Ma for the phengite-rich eclogite and 42 to 52 Ma for the omphacitic...variations of radiogenic argon acquired during phengite formation and subsequent growth, thus dating a...the prograde path. This implies that the oldest phengite 40Ar/39Ar ages provide the best estimate of a |
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| Attic Cycladic Metamorphic Belt on Naxos (Cyclades, Greece) utilizing 40Ar/39Arage spectrum measurements -...analysis of phengite separates from Naxos, part of the Attic Cycladic Metamorphic Belt in Greece, indicates...metamorphism, M I , occurred about 50 Ma ago. Phengite has *âAT* gradients that suggest that part of...ages of biotites from a granodiorite on the west coast are indistinguishable from those found in the metamorphic...SeJ I\ 30 Fig. 1. Tectonic sketch map of the Aegean Sea and surrounding areas. N = Naxos. R = Rhodes |
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| extensive ultramaďŹc nappe that dominates outcrop in the south of the island. In the north, ultramaďŹc lithologies...New Caledonian Ophiolite dominates outcrop in the south of the island (Fig. 1a). A connection between ophiolite...subduction system. Two ophiolite nappes were thrust south-westwards over the basement terranes at this time:...terrane at the highest structural levels along the east coast, effectively lying on the eastern limb of the...OueĚgoa (Fig. 1c) through to low-T eclogite in the east at Mienbock. Recent petrographic work (Fitzherbert |
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| Website: http://bookstore.aapg.org India Affiliated East-West Press Private Ltd, Marketing Division, G-1/16...recognized as a global phenomenon in most orogens. The Aegean Sea is another well-known example of an orogen...are devoted to the Aegean extensional province. Horizontal extension in the Aegean occurs directly above...the backarc region. Lithospheric extension in the Aegean is widely thought to be caused by slab rollback...silicic magmatism in the interval between cessation of East Gondwana arc magmatism at 105 Ma and rifting of |
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| extends for more than 170 km along the north-east coast of New Caledonia (Fig. 1). The metamorphic belt...grade of metamorphism increases from west to east and from south to north away from the âsillonâ and âmelange...largely exposed immediately north and east of Outgoa on the east bank of the Diahot River (Fig. 1). Hydrothermal...magnesiocarpholite + pyrophyllite + quartz f phengite, + magnesiocarpholite pyrophyllite + kaolinite...quartz, magnesiocarpholite + chlorite + quartz f phengite, + + magnesiocarpholite pyrophyllite diaspore |
 | Korchinski, M. S., Vry, J., Little, T. A., Millet, M.-A., Bicknell, R., Smith, E., von der Handt, A. (2014) Timing of UHP exhumation and rock fabric development in gneiss domes containing the world's youngest eclogite Facies rocks, southeastern Papua New Guinea. Journal of Metamorphic Geology, 32 (9) 1019-1039 doi:10.1111/jmg.12105 | Journal (article/letter/editorial) |
| Seafloor spreading axis Oceanic crust Woodlark Rift South Bismark Plate WLK WLK New AUS/WLK Present Ma-Present...Woodlark Plate, NBP; North Bismark Plate, SBP; South Bismark Plate. Direction of movement of the Pacific... 2004). The eastâwest striking Woodlark Rift separates the Australian Plate to the south from the Woodlark...coral platforms of probable Holocene age on the east coast of Goodenough Island, incised flights of river...horizontal stretching of the terrane sub-parallel to the eastâwest-trending margins of the Woodlark Rift. Granitic |
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| Cretaceous-Eocene sedimentary sequence. Immediately to the south lies the broad northwest-southeast melange zone...northeastdipping subduction zone which lay to the east and trended northwest-southeast (Fig. 1). Within...formed the schists in the area lying to the north and east of the melange zone. The parent materials of the...eclogitic albite-epidote amphibolite grade on the east coast (Fig. 3). These paraschists and gneisses contain...high-grade part of t h i s schist belt, particularly east of Ou6goa, an ophiolitic associdtion of metamorphosed |
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| Late Eocene/Early NU Oligocene at the western coast of N-America during eastward subduction of the oceanic...D 3A). On the top, the FSC is separated by the Coast Range Fault from the N-American plate PT E margin...(Chen and Moore, 1982). The AC strongly deformed Coast Range Ophiolite (CRO; Fig. 3B; see table 1 for abbreviations)... RI The FSC is subdivided from the west to the east into the Coastal, Central and Eastern Belts SC...garnet-omphacite-glaucophane-phengite-rutile and garnet-winchite- D phengite-epidote-titanite in the respective |
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| amounts of hydrous minerals, such as zoisite and phengite (Austrheim & Griffin, 1985; Koons, Rubie & Frueh-Green...Fossen & Dallmeyer, 1998). Exhumation took place by eastâwest extension. This extension resulted in strong...including mafic eclogite, eclogite-facies garnet-phengite gneiss and metaanorthosite (Wain, 1997). Both...Mineral abbreviations after Kretz (1983); Phe = phengite. *Austrheim & Engvik (2000). Opx + Grt coronas...stream section on the western side. To the west and south, the megacrystic gneiss is bounded by layered garnetiferous |
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| front: Liebig Range of the Southern Alps on the South Island of New Zealand in the Mount Cook National...Southern Alps on the South Island of New Zealand near Lewis Pass looking to the east, with the Hope River...implications for the evolution of the southern Aegean Sea (Greece). . . . . . . . . . . . . . . . . . . . ...environmental changes on Naxos, in the southern Aegean Sea. The study by Carrapa et al. (Chapter 5) focuses...crystal size, cooling rate, and the kind of mica (phengite, muscovite, etc.) used (McDougall and Harrison |
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| three key regions were seleeted: 1) the Andes in South Ameriea and the Roekies in North Ameriea 2) the...southern border of the Aar Massif. Adjacent to the south there is a gap, about 30 km wide, with no or doubtful...and which hardly emerge above the noise level. South of the gap reasonably good and coherent, though...unfortunate as the nothern end of W3 is about 30 km east of the southern end of W1 in a tectonically critical...Laubscher (1990), which, however, is located about 30 km east ofW3. As it begins at the southern end ofLago Maggiore |
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| Idria serpentinite body of the central California Coast Ranges. These blocks show evidence for an early...part of the Great Valley Group, the underlying Coast Range Ophiolite, and at least part of the Franciscan...the Great Valley forearc basin deposits to the south. Suzanne Baldwin and colleagues present abundant...Much of the focus concerns field relations in the Coast Range Ophiolite of California. Some ophiolite fragments...continental crust (the âupper plateâ) during low-angle, east-dipping subduction related to the Laramide orogeny |
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| Mineral Foundation 63 Conyngham Street Glenside South Australia 5065 omission that may be made. Š The...(08) 379-0444 Fax (08) 379-4634) India Affiliated East-West Press PVT Ltd G-1/16 Ansari Road New Delhi...â 0.022 0.02 219 7â o920 1 ise ta Kugi-Lyal, south-western Pamir, USSR. Quoted by Cerny (1968) from...in gneissic or schistose rocks, Bamble Sector > South Norway (Beeson, 1978). (Includes P;O; 0.04). ion)...Anthophyllite, serpentinite, Sound of Taransay, South Harris, Outer Hebrides (Guppy 1956). (Includes Cr |
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| Caledonia: Implications for regional tectonics of the south-west Pacific Cassian Pirard, Carl Spandler PII:...Caledonia: Implications for regional tectonics of the south-west Pacific. The address for the corresponding...Caledonia: implications for regional tectonics of the south-west Pacific Cassian Pirard a,* PT Carl Spandler...were transported eastwards and accumulated into the East RI New Caledonia Basin. Palaeozoic and Precambrian...to a reduced continental sediment input into the East New Caledonia Basin during the MA Cretaceous, |
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| outcrops are along the Wadi Jizzi. Other wadis to the south, Wadi Ahin and Wadi Salahi, show unique exposures...mountains from Ibra to Wadi Tayyin, the Batinah coast sections are perhaps the most complete. The uppermost...Jebel Shams (3005 m) south to the village of Ghul. Other wadis to the east draining south from the Saiq Plateau...Al-Akhdar from the Jebel Shams summit extending east and west (Fig. 10) should be designated a World...geomorphology with drowned wadi systems along the north and east coasts creating fjords with seacliffs hundreds of |
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| proximity to the Olympic Dam CuU mineralisation, South Australia, are shown in Fig. 1. 3.1. Coles Bay Granite...intrudes Ordovician to Devonian sediments on the east coast of Tasmania. It varies from a pale-pink, F...Bay Granite, Tasmania; the Olympic Dam granite, South Australia; and the Kambalda Granodiorite, Western...equigranular groundmass of biotite (altered to phengite and rarely chlorite), quartz, K-feldspar, plagioclase...increased proportions of secondary phases including phengite and chlorite replacing biotite, sericite after |
 | Butler, J.P., Jamieson, R.A., Dunning, G.R., Pecha, M.E., Robinson, P., Steenkamp, H.M. (2018) Timing of metamorphism and exhumation in the Nordøyane ultra-high-pressure domain, Western Gneiss Region, Norway: New constraints from complementary CA-ID-TIMS and LA-MC-ICP-MS geochronology. Lithos, 310. 153-170 doi:10.1016/j.lithos.2018.04.006 | Journal (article/letter/editorial) |
| contacts with the overlying allochthons, which in the south and west take the form of late- to post- ED orogenic...collectively covering ~5,000 km2 along the west coast: the NordfjordâStadlandet domain, the Sorøyane ...Nordøyane domain (Root et al., 2005). Between and east of these domains, eclogites lacking coesite are...This is consistent with more recent data indicating east-to-west younging of PT titanite ages from ca....migmatitic shear zone exposed along the southeastern coast of Finnøya. Pseudosection analysis and monazite |
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| Margarita Island, Venezuela: a constraint on Caribbean-South America interaction Walter V. Maresch, Rolf Kluge...Island, Venezuela: a constraint on Caribbean â South America interaction WALTER V. MARESCH1*, ROLF KLUGE2...time span during which the southeastern Caribbean/South American border was clearly a passive margin. The...overprint occurred far to the west in northwestern South America, a scenario completely in accord with the...margins that were then overridden from west to east by allochthonous arc and oceanic complexes related |
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| gneiss from Skallevikshalsen, LuĚtzow-Holm Complex, East Antarctica: Implications for ultrahigh-temperature...highest metamorphic grade in the LuĚtzow-Holm Complex, East Antarctica. It occurs as an FeâMgâ Ti compositional...KAWASAKI ET AL. from Mt Riiser-Larsen, Napier Complex, East Antarctica (Miyake & Hokada 2013). The composition...gneiss from Skallevikshalsen, LuĚtzow-Holm Complex, East Antarctica. We also use a synthetic reaction corona...LuĚtzow-Holm Complex The LuĚtzow-Holm Complex (Fig. 1a) in East Antarctica provides important information on the |
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| in the region, and the occurrence along the west coast of sub-horizontal Early Miocene marine strata which...dates on mineral separates from the eclogitic east coast zone, as follow: glaucophanes with 0.039-0.058%...questionable ages at 68 m.y., while paragonite_+ phengite from four paraschists gave 36-39 m.y. In addition...Biotite Hornblende ~Ibite Quartz :~. Epidote Phengite disordered Graphite Sphene Rutile --->K-- fully...Na-amphibole Actinolite Hornblende Almandine Phengite The metamorphic gradient for New Caledonia, as |
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| Introduction L32 structural, trends in (a) The district south of the ttt6r6trice Road (b) The district north of... (a) The district north ofEhe Diahot River and south of the Gendarmeri.e Fault (b) The main structural...Fault, leading to tlt Vengaya and the main divide east of Mt Vengaya (e) The main structural trend.s in...406 -acid volcanism association of the d,eposits south of the Gendarmerie Fault (5) Significance of the...the. highest grade rocks are exposed arong the east coast and as tectonically-empLaced blocks in fault |
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| 7A-10 High-pressure metaclastics in the California Coast Ranges 167 167 Metapelites: Progressive Mineral...Japan High-pressure metabasites of the California Coast Ranges 239 241 8A-6 8A-7 8A-8 8A-9 8B 208 210...geosyncline was present but was situated to the south of the belt of the regional metamorphism. Rocks...upper-left part, with Trondheim (indicated by T) on the coast of a fjord. curves plotted on a map of regional...Mariana Arcs jut out into the Pacific Ocean to the south of Japan. These arcs are made up of young volcanics |
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| glauconite, illite, lepidolite, zinnwaldite, and phengite, are no longer considered valid species but are...at 08:02 29 December 2014 SCOVIL PHOTOGRAPHY East Coast Show Springfield, Massachusetts August 7â9 Denver |
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| EDITED BY J. A. MILLER University of Cape Town, South Africa R. E. HOLDSWORTH University of Durham, UK...Foundation Bookshop 63 Conyngham Street Glenside South Australia 5065 Australia Orders; Tel. +61 88 379-0444...379-4634 E-mail: bookshop(a amf.com.an India Affiliated East-West Press PVT Ltd G-l/16 Ansari Road. Daryaganj...igneous intrusions in central Dronning Maud Land, East Antarctica CARTWRIGHT, L, BUICK, I. S. & VRY, J...Cambrian metamorphism in western Dronning Maud Land, East Antarctica: a carbon and oxygen isotope study of |
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| School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK (*correspondence: s...Durham, UK (christopher.dale@durham.ac.uk) 2 SUERC, East Kilbride, UK 3 School of GeoSciences, University...high pressure (HP) veins containing omphacite and phengite from the Monte Mucrone metagranitoĂŻd (Sesia Zone)... illustrated by corona textures of garnet and phengite around the biotite crystals and by the replacement...garnet). K/Ar and 40Ar/ 39Ar geochronology of HP-phengite show large ages variations from 62 to132 Ma, and |
