 | | Journal (article/letter/editorial) | | sulphur isotope analyses of pyrite, pyrrhotite, chalcopyrite, sphalerite, galena and bornite from 23 occurrences...Cu-(Au) sulphide mineralizations in the Malmberget region (e.g. Aitik), which were formed by a similar process...Archean granite-gneiss basement ca 2.8 Ga old (Welin et al. 1971; Ski61d 1979). The volcanics consist of basalts...been obtained (Silvennoinen et al. 1980; Ski61d and Cliff 1984; Krill et al. 1985; Ski61d 1986; Romer 1989)...in the ore. Occasionally accessory amounts of chalcopyrite are found_ The skarn iron ores are considered |  | | Journal (article/letter/editorial) | | METABASITES IN THE RYOKE ZONE OF THE TOYONE-MURA AREA, AICHI PREFECTURE, JAPAN* Tosmo KUTSUKAKE Department...largest mass of metabasite in the RyBke zone occurs in the present area. It occupies an area about 4Km by...the RyBke zone, there occur several kinds of metabasite which have been mainly derived from doleritic...consideration. In the Toyone-mura area, Aichi Pre fecture, the largest mass of metabasite * Presented occurs. its...Toyone-mura area occupies the southeastern part of the RyBke zone in central Japan (Yamada et al., 1974) |  | | Journal (article/letter/editorial) | | considerable n u m b e r of deposits w i t h i n a region located 150 k m W N W of Stockholm. T h e ores...r , in the w e s t e r n m o s t p a r t of the region, low g r a d e green207 R, FRIETS'CH schist...and narrow synforms. In the eastern part of the region, the metasediments have a broader coverage and...metavolcanics give ages between 1880 and 1900 Ma, (WELIN et al., 1980 a, 1980 b), but these possibly reflect, in...have occurred around 1900 Ma (ABERG, 1978; WELIN et al., 1980 a). The iron and manganese ore types The |  | | Journal (article/letter/editorial) | | intrusive cut by several generations of deformed metabasite dykes. The SLC and three of these dyke generations...PII S0301-9268(98)0003 I-X 176 S.L. Harluv ul al. Precamhrian Ru.suarch 1. Introduction The discrimination...Tingey, 1981, 1991; Sheraton et al., 1984: Collerson et al., 1983; Black et al., 1991 ). In the Rauer Group...of several suites of del\)rmed and metamorphosed dykes that cut earlier felsic and composite orthogneisses...confirmed through zircon U Pb isotopic dating ( Kinny et al., 1993). An important feature of the Archaean orthogneisses |  | | Journal (article/letter/editorial) | | tonalitie gneisses; these rocks are cut by amphibolite dykes and present several nucleii locally surronnded by...Heft 1, 1982, SeRe 291--317 29"[ J. C. M. DANNIet al. moffismo 6 de facies xisto verde, c) Cinturgo mdvel...(undifferentiated Precambrian) (ALMEIDA, 1968; BA~BOSA et al., 1969). Some were even incorporated within the younger...(ALMEIDA e t al., 1976), are exposed within the Tocantins tectonic province (ALMEmA et al., 1981), as...Proterozoic is considered to be represented in the area by a variety of plutonie, volcanic and sedimentary |  | | Journal (article/letter/editorial) | | typical of those elsewhere in the basement of the region. There is considerable variety in the lithologies...metasedimentary rocks occur. The Smithson Bjerge region also provides a good example of unusual corona...Qaqujlrssuaq anorthosite-ccurs in the northern half of the area, with tonalitic-granodioritic gneisses, metasedimentary...respectively (see Table I ) ; hornblende is Na- and Al-rich edenite and plagioclase is antiperthitic oligoclase...titanomagnetite precursor. ,, ,,,, Pyribolite and metabasite (dykes cutting orthogneisses) PETROGRAPHY AND MINERAL |  | | Journal (article/letter/editorial) | | Ma) (Naganjaneyulu and Santosh, 2010; Bhowmik et al., 2012). Recent petrological and geochronological...reference). (c) Simplified geological map of the area in and around Raghunathpur. Please cite this article...Ga) crust (Chatterjee et al., 2008; Goswami and Bhattacharyya, 2008; Maji et al., 2008; Chatterjee and...and Ghose, 2011; Karmakar et al., 2011; Sanyal and Sengupta, 2012). A series of elongate, lenticular batholiths...collisional orogenic sutures (for example, see Santosh et al., 2009). The wide distribution of porphyritic granitoids |  | | Book | | of the Namaqualand Metamorphic Complex in the Aus area (Jackson. 1976)contain magnetite quartzites which...deposits of South Africa (Rozendaal, 1978; 1986; Ryan et al., I986) where deposition may have occurred in an...carbonates in the graniterich terrain of the Aus area. Deposits of refractory minerals may occur. The...deposits of southern Namibia (Minniti, 1986; Viljoen et al .. 1986) fonned when quartz porphyry and leucogranite...The Gaub ValleyFomiation of the western Rehoboth area consists or biotitic schists that are extensively |  | | Report (issue) | | Granite 66 - inematic Dyke Suite) 33 Amphibolite dykes (Late K cutting South Savannas Granite 66 34 Photomicrograph...54 Schematic structural map of the Marudi Mine area 32 Whole-rock rubidium:strontiu1n isochron for 8...basic intrusives 57 l 1 Discordant amphibolite dykes of the Metadolerite Dyke Suite cutting Kanuku Paragneiss...Paragneiss 59 12 Field sketches of late-kinematic mafic dykes 64 13 Details of part of the late-kinematic mafic...Suite 68 15 K:Ar age determinations on dolerite dykes from southern Guyana 69 16 Rose diagram of faults |  | Chadwick, R. A., Jackson, D. I., Barnes, R. P., Kirnbell, G. S., Johnson, H., Chiverrell, R. C., Thomas, G. S. P., Jones, N. S., Riley, N. J., Pickett, E. A., Young, B., Holliday, D. W., Ball, D. F., Molyneux, S. G., Long, D., Power, G. M., Roberts, G. H. (2001) Geology of the Isle of Man and its offshore area. British Geological Survey & Treasury Isle of Man, Keyworth, Nottingham. | Book | | COUNCIL Geology of the Isle of Man and its offshore area Isle of Man Government Geological succession...LangsettiM Yeadon ian Mnrsden ian � Kindersooutian :, Al portian ChokieriM � Arnsbergian Pendlei an ., ....SURVEY Geology of the Isle of Man and its offshore area RA Chadwick, DI Jackson, RP Barnes, GS Kimbell,...2001. Geology of theIsle ofMan and its offshore area. (Keyworth, Nottingham: British Geological Survey...intrusions 34 Basic intrusions 35 Dioritic dykes 35 Granitic dykes 35 4 Post-Caledonian structure 37 Carboniferous |  | | Book (volume) | | maintaining a normal average T2—O distance; in fact, in low-Al amphiboles T2—O (average) is greater than T1—O (average)...structures would violate the parity rule. Papike er al. (1973), in relation to pyroxenes, to which similar...is somewhat higher). T1-O (average) increases with Al content and the relationship A\(T1) = 8.126(T1-O)...cation) sites, has been reported by Hawthorne et al. (1988). In C2/m amphiboles the M4 cation is surrounded...no means precise. With increasing substitution of Al,Fe*+ in anthophyllite, these smaller ions in the |  | | Book | | conference proceedings. It covers the entire research area of geology including, but not limited to, economic...geological, geochemical, and geophysical aspects of dykes and related units in Toronto, Canada, in 1985. Given...and Fahrig 1987; Parker et al. 1990; Baer and Heimann 1995; Hanski et al. 2006; Srivastava 2011). Continuing...cover almost every aspect of modern research on dykes and related units: 1. Regional maps/reviews of dyke...progress, problems, and potential 3. Mapping of dykes using remote-sensing techniques: aeromagnetic data |  | | Book | | throughout the world (Arndt et al., Barbey and Raitht , Barbosa t , Bingen et al., Hensen and Warren, Lieberman...Mogk t , Perchuk and Gerya, Percival, Tait, Thost et al., Wang). This set the scene for more detailed, thematic...reflecting the provenance of the contributors. In this region, there are some very-high-pressure granulites (-15kb)...other involving mantle-derived fluids (Voshage et al.). D. Vielzeuf and Ph. Vidal (eds.), Granulites...uplift in NorthEast Zimbabwe, while van Reenen et al. t presented a regional synthesis on the metamorphic |  | | Book | | (‘Snowball Earth’, Kirschvink, 1992a; Hoffman et al., 1998), large oscillations in the carbon and sulphur...in major river mouths in four continents, Rino et al. (2008) argued that the Grenvillian and Brasiliano-Pan-African... All rights reserved. 3 4 Claudio Gaucher et al. Figure 1.1 Synthesis of Neoproterozoic chronostratigraphy...Halverson et al. (2007a); d13C curve from Halverson et al. (2005), Maloof et al. (2005) and Kah et al. (1999)...and references therein). Break-up of Rodinia (Li et al., 2008b; Chapter 8 and references therein): Rifting |
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