 | | Journal (article/letter/editorial) | | Geochronology of the Uasilau-Yau Yau PorphyryCopper Prospect,New Britain, PapuaNew Guinea Jos•:PHB. '•VHALENANDI^N...agesfor the three major intrusiveepisodes of the Uasilau-YauYau intrusive complexhavebeendetermined. Group...placeafter mineralization. Igneousactivity in the Uasilau-YauYau intrusivecomplexspansa periodof at least6...suggested that all porphyry coppermineralization in New Britainmavbetheresultof a lateOligocene igneousevent...investigations of intrusive :k deep submarinetrench (New Britain Trench) complexesassociated with porphyrycoppermineralparallels |  | | Journal (article/letter/editorial) | | Island-Arc Plutonic Suite: the Uasilau-Yau Yau Intrusive Complex, New Britain, P.N.G. by JOSEPH B. WHALEN...ABSTRACT In the Uasilau-Yau Yau intrusive complex of central New Britain, Papua New Guinea, there is a compositional...closely resembling recent basaltic rocks in New Britain. The fact that the plutonic rocks are almost...late Cainozoic calc-alkaline volcanic rocks of New Britain supports fractional crystallization as a viable...initial magma. Granites, such as those of the Uasilau-Yau Yau intrusive complex, which are probably generated |  | | Journal (article/letter/editorial) | | mafic rocks: evidence from the southern Superior Province, Canada Richard H. Sutcliffe 1, Alan R. Smith...732.68 Ga) granitoids of the southern Superior Province are examined to constrain processes of crustal...vinces o f the s o u t h e r n S u p e r i o r Province. T h e g e o l o g i c a l compilation map of...o i d t e r r a n e s o f the S u p e r i o r Province of Ontario and therefore should be considered...study areas showing subprovinces of the Superior Province. Plutons investigated in this study are: Jackfish |  | SAITO, Satoshi, ARIMA, Makoto, NAKAJIMA, Takashi, KIMURA, Jun-Ichi (2004) Petrogenesis of Ashigawa and Tonogi granitic intrusions, southern part of the Miocene Kofu Granitic Complex, central Japan: M-type granite in the Izu arc collision zone. Journal of Mineralogical and Petrological Sciences, 99 (3) 104-117 doi:10.2465/jmps.99.104 | Journal (article/letter/editorial) | | uralitized showing the aggregated texture of fibrous actinolite and opaque phases. Hornblende occurs as a thin...in the South Fossa Magna region, central Japan: new evidence from fission − track analysis of zircon...Crustal evolution in the Izu − Bonin − Mariana arc: New constraints from Pb − , Nd − and Sr − isotopic data...(Ben − Avraham, Z. Ed.). Oxford University Press, New York, 100 − 123. Taira, A., Saito, S., Aoike, K....− arc plutonic suite: the Uasilau − Yau Yau intrusive complex, New Britain, P.N.G. Journal of Petrology |  | Whalen, Joseph B., Percival, John A., McNicoll, Vicki J., Longstaffe, Frederick J. (2003) Intra-oceanic production of continental crust in a Th-depleted ca. 3.0�Ga arc complex, western Superior Province, Canada. Contributions to Mineralogy and Petrology, 146 (1) 78-99 doi:10.1007/s00410-003-0484-8 | Journal (article/letter/editorial) | | Th-depleted ca. 3.0 Ga arc complex, western Superior Province, Canada Received: 13 November 2002 / Accepted:...Lake magmatic complex in the western Superior Province of Canada represents a fragment of early (3.0...faults. Insert tectonic map of the Western Superior Province shows subprovinces and terranes. Geochronology...letters A to F in Table 1 and Fig. 2 are shown Province (Fig. 1). Interpreted as an early continental...first reported ca. 3 Ga ages from the Superior Province. In this area, the Mesoarchean rocks are interpreted |  | | Journal (article/letter/editorial) | | often possess a layered structure, is not clear. New geochemical data, including rare earth and trace...origin of some intermediate plutonic rocks is not new. Diorites of Precambrian to Tertiary age are found...concentrated mainly on field relationships and petrography. New geochemical data, including major, trace and R E...magnesiohornblende and brown pargasitic hornblende, but actinolite and cummingtonite also occur as replacements...other common accessories include cummingtonite, actinolite, chlorite, epidote and calcite. The more uniform |  | | Journal (article/letter/editorial) | | quartz and apatite. Green hornblende, tremolite, actinolite, epidote, chlorite and kaolinite are secondary...brown hornblende alters to green hornblende, actinolite and chlorite. Some hornblende crystals are altered...Phanerozoic oceanic island arcs (see below) such as New Britain and Izu-Bonin. That the granitoids plot close...calcalkaline intrusive rocks (Perfit et al., 1980); 3, New Britain arc (Whalen, 1985); 4, Tanzawa Complex, IBM arc...granitoids of Modern oceanic island arcs (e.g. New Britain, Whalen, 1985; Izu-Bonin-Mariana, Kawate and |  | | Journal (article/letter/editorial) | | intra-oceanic arc intrusions in the Pertek area of Tunceli Province, eastern Turkey, and implications for the geodynamic...intraoceanic arc intrusions in the Pertek area of Tunceli Province, eastern Turkey, and implications for the geodynamic...complex crop out in the Pertek area of Tunceli Province (eastern Turkey) in the Southeast Anatolian Orogenic...and εNd(i) from –1.7 to +6.7. Our results shed new light on the possible sources and evolution of the...intra-oceanic arc intrusions in the Pertek area of Tunceli Province, eastern Turkey, and implications for the geodynamic |  | Sakyi, Patrick Asamoah, Su, Ben-Xun, Anum, Solomon, Kwayisi, Daniel, Dampare, Samuel Boakye, Anani, Chris Y., Nude, Prosper M. (2014) New zircon U–Pb ages for erratic emplacement of 2213–2130Ma Paleoproterozoic calc-alkaline I-type granitoid rocks in the Lawra Volcanic Belt of Northwestern Ghana, West Africa. Precambrian Research, 254. 149-168 doi:10.1016/j.precamres.2014.08.009 | Journal (article/letter/editorial) | | journal homepage: www.elsevier.com/locate/precamres New zircon U–Pb ages for erratic emplacement of 2213–2130...in the Lawra Volcanic Belt of Northwestern Ghana, West Africa Patrick Asamoah Sakyi a,∗ , Ben-Xun Su b...Ghana within the West African Craton (Fig. 1). It is predominantly located in the Upper West Region of Ghana...Simplified geological map of the Man Shield showing the West African Craton and Palaeoproterozoic Birimian rocks...emplacement as well as the geodynamic evolution of the West African Craton (WAC). This would be done through |  | | Journal (article/letter/editorial) | | minerals are altered into calcite, chlorite and actinolite. Biotite is euhedral and subhedral reddish-brown...T.J.B., 1990. Calcic amphibole equilibria and a new amphiboleplagioclase geothermometer. Contrib. Mineral...international mineralogical association, commission on new minerals and mineral names. Am. Mineral. 82, 1019–1037...J.L. (Eds.), Understanding Granites: Integrating New and Classical Techniques, 168. Geol. Soc. London...1988. Normalization of isotopic dilution analyses-a new program for isotope mass spectrometric analysis. |  | | Journal (article/letter/editorial) | | belt plutonic rocks (Whalen et al., 1999) based on new geologic, geochemical, Nd isotope, and U-Pb zircon...crustal thickness during magma genesis and propose new links between plutonic rock petrogenetic and tectonic...types with respect to known VHMS deposits to develop new exploration criteria. Magmatic and Metallogenic Evolution...and Snow Lake SUPERIOR S Wekusko Lake Reed 1 West Amisk arc assemblage File Lake Elbow Lake Amisk...et al. (2016) and references cited therein. From west to east, the Flin Flon greenstone belt (Fig. 1) |  | Kaygusuz, Abdullah, Siebel, Wolfgang, Ilbeyli, Nurdane, Arslan, Mehmet, Satır, Muharrem, Şen, Cüneyt (2010) Insight into magma genesis at convergent plate margins – a case study from the eastern Pontides (NE Turkey) Neues Jahrbuch für Mineralogie - Abhandlungen, 187 (3) 265-287 doi:10.1127/0077-7757/2010/0178 | Journal (article/letter/editorial) | | literature, new U-Pb SHRIMP zircon data and Pb-isotopic whole rock data for the Torul pluton and new Nd-Sr...rocks, so that an age reassessment in the light of new geochronological data appears essential (Fig. 1,... bi:biotite, hb:hornblende, tr-act:tremolite-actinolite, has:hastingite, arf:arfvedsonite, sph:sphene...explanation. 4.2 Petrographic features tremolite-actinolite), pyroxene (augite), and biotite (Table 2). Apatite...no spatial and temporal relationship from east to west. Instead, magmatism becomes younger from the north |  | | Journal (article/letter/editorial) | | Composite Tn–Tr Tn–Tr Aroostock Cty, Tn–Tr MN West Shasta, CA Tn–Tr Tn–Tr Skellefte, Sweden Tn–Tr...number of thinner sills. It is truncated to the west by later trondhjemitic phases of the RLIC. The presence...tonalite and quartz-diorite samples lie along the New Britain (NB) trend for M-type oceanic-arc granitoids...characterized by replacement and infilling by epidote, actinolite, quartz, albite, magnetite and subordinate sulfide... primary mafic minerals replaced with quartz, actinolite and magnetite. These patches can have centimeters-wide |  | | Journal (article/letter/editorial) | | in the eastern Pontide magmatic arc and reports new petrographic, geochemical, Sr-Nd isotopic, and SHRIMP...samples, it is altered into chlorite, calcite, and actinolite. Larger hornblende crystals (2 – 2.5 mm) may...J. B. (1990): Calcic amphibole equilibria and a new amphibole-plagioclase geothermometer. – Contrib....L. (eds.): Understanding granites: intergrating new and classical techniques. Geol. Soc. London, Spec...(1988): Normalization of isotopic dilution analyses–a new program for isotope mass spectrometric analysis. |  | Dai, Meng, Yan, Guangsheng, Liu, Cui, Deng, Jinfu, Li, Yongsheng, Jia, Wenbin, Lai, Chun‐Kit (2020) Southward subduction of the Mongolia–Okhostk Ocean: Insights from Early–Middle Triassic intrusive rocks from the Jiawula–Tsagenbulagen area in NE China. Geological Journal, 55 (1) 967-993 doi:10.1002/gj.3435 | Journal (article/letter/editorial) | | China University of Geosciences, Beijing, China New zircon U–Pb age data, Hf isotopes, whole‐rock major...Mongol–Okhotsk suture belt, located in the north‐west of NE the tectonic setting of southern Erguna Massif...study, combined with previous data, we presented the new sure times (Kuzmin & Fillipova, 1979; Tomurtogoo...Halim, & Hankard, 2005; is bounded to the north‐west by the Mongol–Okhotsk suture belt, Donskaya, Gladkochub...zonation from a core of quartz–sericite–pyrite to actinolite– trending secondary faults. Intrusive rocks |  | | Journal (article/letter/editorial) | | late Permian I-type supersuites in the southern New England Orogen of eastern Australia. It comprises...Cordilleran I-type; isotopically primitive; southern New England Orogen; tonalite INTRODUCTION An important...dispersion as a result of widespread north to north-west trending strikeslip deformation (Aitchison & Flood...al., 1993) produced large-scale folding and east–west thickening of the accretionary wedge. The Texas–Coffs...limestone and radiolarian siltstone, occurs to the west of the Peel Fault (Fig. 1b) within the Gamilaroi |  | | Journal (article/letter/editorial) | | body. Increased knowledge of eruptive history and new chemical analyses of ~350 wholerock and glass samples...precipitated from rather primitive basalt. A m a j o r new finding is that mafic ejecta have two distinct levels...chalcedony, hematite, chlorite, and minor epidote and actinolite. This type of alteration may be too shallow to...inconsistent with postcaldera andesites representing new magma: (1) high crystal content of all rocks, and...relative to the LSr trend. If postcaldera andesites are new magma, that magma was unusually crystal rich, different |  | | Book (edition) | | ..................... 1363 VII.2. Lesser Sunda- West Banda Volcanic Arc (Bali-Lombok- Flores- Wetar)........................... 1507 VIII. WEST PAPUA (WEST NEW GUINEA).......................................................... 1516 VIII.1. New Guinea General and West Papua ....................................Myanmar (Burma), NE India, SW Yunnan (= Sibumasu- West Burma plates)...................................................... 2127 IX.10. SW Pacific (incl. New Caledonia)...................................... |  | | Book | | (1990) R.D. DALLMEYER and P.P. LECORCHE {Eds.}: The West African Orogens and Circum-Atlantic Correlatives... D. Dallmeyer... (ed.). - Berlin ; Heidelberg ; New York ; Barcelona ; Budapest ; Hong K o n g ; London...Originally published by Springer-Verlag Berlin Heidelberg New York in 1995 Softcover reprint of the hardcover 1st...political reformations in central Europe. This exciting new atmosphere of international cooperation resulted...presentation of a wealth of information which was new to scientists from both sides of former political |  | | Book | | Prentice Hall Prentice Hall Upper Saddle River, New Jersey 07458 Lihrar) of Congre~~ Cataloging-in-Publication... © 2001 Prentice-Hall Inc. Upper Saddle River. New Jersey 07458 All rights reserved. No part of this...i\1exico Pr nt1_ Hill of India PriHllt: Lim1tcd , New Delhi Pr.:nt c Hall of Japan Inc r. ,k.yo 1uct1t1nn...423 21.6.2 Regio nal Burial Metarr1orphism, Otago, New Zea land 425 21. 6.3 Paired Orogenic Metamorphic...theoretical models and computing power, have opened new areas of research an d have permitted us to learn |  | | Report (issue) | | ophiolites in the Variscan suture of Galicia (north west Spain): Distribution, characteristics, and 111eaning... During the Archean, from ea. 3.85 to 3.0 Ga, a new global crust was formed, which has been recycled...early block/microcontinent amalgamation Superior Province early cratonization-harzburgite keels InversIon...o- (J) 0 :E-: .~ 3 Ventersdorp Central Rand West Rand Pongola Dominion late K2O granites >-2.7-3...tectonjc evolution of Earth. A/P-Archeo-Proterozoic (new tenn); REEs-rare earth elen1ents; SSZ-supra-subduction-zone; |
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