 | | Journal (article/letter/editorial) | | +PETER COPELAND,’and MATTHEW T. HEIZLER”+ ‘Department of Geological Sciences, State University of New York...York at Albany, Albany, New York 12222, USA (Received July 21, 1989; accepted in revisedform March 20,...La Trobe University, Bundoora, Victoria 3083, Australia. +Present address: Department of Earth and Space...from the literature are shown in Fig. 1. L-2 plagioclase is from a dolerite dike in western Liberia (LANPHEREand...79- 173 is a calcic plagioclase from a mafic granulite from Broken Hill, Australia (HARRISON and MCDOUGALL |  | | Journal (article/letter/editorial) | | Franciscan of the Laytonville District, Mendocino Co., Califomia (ebs.) Ahrens, L. H. (Book revieu') Akhmanova...California Stinson, NI. C. and Matthews, R. A. Seven new barium miuerals from eastern Fresno County, Californier...Stinson, M. C. Matthews, R. A. and Pabst, A. Seven new barium minerals from eastern Fresno County, California...car1972 bonatite and related rocks . Andorite, a new occurrence of (Willianrs) Andradite, zr r.ater-bearing...chlorite. 868 ogy of thorium-bearing s1'nBaird, A K., Copeland, D. A., theticmonazite,. McIntyre, D. B. and Welday |  | | Journal (article/letter/editorial) | | & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer...Geoscience Journal of the Geological Society of Australia Publication details, including instructions for...extensional basin sequence: The Manning Group, southern New England Orogen R. B. Jenkins a a b & R. Offler...NSW, 2308, Australia b Sunshine Coast University College , Locked Bag 4, Maroochydore South, Qld, 4558...4558, Australia Published online: 09 May 2007. To cite this article: R. B. Jenkins & R. Offler (1996) |  | | Report (issue) | | Carbonatite (82M/7, 10) Geochemistry Dating Mount Copeland Nepheline Syenite Gneisses (82M/2) Nepheline Syenite...Geology of the area south of Paradise Lake 46 Figure 10b. Cross-section A-A*, area south of Paradise Lake...composition of selected rocks from the 56 Mount Copeland syenite complex 62 Table 11. Chemical analyses...vermiculite and zirconium oxide are produced at Palabora, South Africa (Heinrich, 1966; Currie, 1976a). Nepheline...describe the host rocks of diamonds at Kimberley, South Africa. Since that time many rocks carrying olivine |  | | Journal (article/letter/editorial) | | & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer...Geoscience Journal of the Geological Society of Australia Publication details, including instructions for...mineralisation events at the New Celebration gold deposits in Western Australia a b S. J. Nichols & S.... G. Hagemann a La Mancha Resources Australia Pty Ltd, PO Box 10398, Kalgoorlie WA 6430 b Centre for...Environment, The University of Western Australia, Crawley, WA 6009, Australia Published online: 11 Mar 2014. |  | | Book (edition) | | prospects for finding buried coal and hydrocarbons in south-east Antrim are also considered. In order to keep...Calcdonian intrusi\·e rocks 62 Petrology 62 �l lC:ROFICHE CO:\TE:\TS Appendix I Records of coastal sections of...Permian and lowc·r Carboniferous rocks al Cuhra, Co. Down Appendix 2 List of Lower Carboniferous fossils...Localion map of lhe main Crclaccous exposures in south-cast Anlrim. B. Comparative vertical sections in...53 19 Hist0gram of basah lavas with different plagioclase core compos1uons 57 20 Variation of sonie clemcnLs |  | Piechocka, Agnieszka M., Gregory, Courtney J., Zi, Jian-Wei, Sheppard, Stephen, Wingate, Michael T. D., Rasmussen, Birger (2017) Monazite trumps zircon: applying SHRIMP U–Pb geochronology to systematically evaluate emplacement ages of leucocratic, low-temperature granites in a complex Precambrian orogen. Contributions to Mineralogy and Petrology, 172 (8) doi:10.1007/s00410-017-1386-5 | Journal (article/letter/editorial) | | low-temperature melts because they may not crystallise new zircon. For leucocratic granites U–Pb zircon dates...In the Proterozoic Capricorn Orogen of Western Australia, leucocratic granites are associated with several...Street, Bentley, WA 6102, Australia 2 Geological Survey of Western Australia, 100 Plain Street, East...East Perth, WA 6004, Australia other geochronological data. To overcome this we used SHRIMP U–Th–Pb monazite...sources (e.g., Glenelg River Complex, southeastern Australia). Dating leucocratic, low-temperature granites |  | | Journal (article/letter/editorial) | | from Sierra de Huantraico and La Matancilla and new 40Ar/39Ar dating from the Mendoza Region, Argentina...Huantraico and La Matancilla plateaus, including new 40Ar/39Ar age results of major and trace elements...more oblique South America–Farallon plate convergence to more rapid, near-normal South America–Nazca...convergence (ca. 25–24 Ma (Jordan et al., 2001; Kay and Copeland, 2006; Pardo-Casas and Molnar, 1987; Somoza, 1998))... The second magmatic stage (20–18 Ma (Kay and Copeland, 2006)), which constitutes the main focus of this |  | Yang, Zhiming, Hou, Zengqian, White, Noel C., Chang, Zhaoshan, Li, Zhenqing, Song, Yucai (2009) Geology of the post-collisional porphyry copper–molybdenum deposit at Qulong, Tibet. Ore Geology Reviews, 36 (1) 133-159 doi:10.1016/j.oregeorev.2009.03.003 | Journal (article/letter/editorial) | | Tasmania, Private Bag 79, Hobart, Tasmania 7001, Australia Institute of Mineral Resources, Chinese Academy...Ma) (Schärer et al., 1984) were developed from south to north, suggesting northward subduction of the...1984; Harrison et al., 1992). Cenozoic magmatism in south Tibet is represented by the voluminous subhorizontal...exhumation of the Gangdese arc batholiths at 18–21 Ma (Copeland et al., 1987; Harrison et al., 1992), east–west...contact metamorphism (Fig. 3A), mainly occurs in the south-central part of the district (Fig. 2A) that hosts |  | | Journal (article/letter/editorial) | | (Fig. 3 ) is a calcic plagioclase from a mafic granulite near Broken Hill, Australia (Harrison and McDougall...Dramatically saddle-shaped age spectrum of a caltic plagioclase ( 79-173) believed to have taken up excess Ar...with coarser lamellae of a transitional calcic plagioclase ( wAngO). These domains are independently recognized...gas releaseis identified as the transitional plagioclase lamella (Harrison and McDougall, 1981). Still...an apparent plateau, or, in the presence of plagioclase inclusions, dropping slightly in a monotonic |  | | Journal (article/letter/editorial) | | similarities to oceanic DMEM1-like lavas of the south Atlantic Tristan da Cunha type. These backarc lavas...this mixing is suggested to have peaked as the South America continent accommodated to major late Oligocene...Ma backarc lavas north of 51°S, and all of those south of 51°S. Introduction of an EM1-like component associated...Nazca and Antarctic plates are subducting beneath South America (Fig. 1). In the absence of major extension...pre30 Ma lavas in this region and all of those south of 51°S have more pronounced DM-HIMU signatures |  | | Journal (article/letter/editorial) | | Lucas and StOnge, 1992; St-Onge and Lucas, 1995; Copeland, 1999). Field, petrological and microchemical...LHG, Lake Harbour group; NA, Narsajuaq arc; NQO, New Quebec Orogen. M.R. St-Onge et al. / Precambrian...have yielded ages between 3019 9 5 and 2784 9 9 Ma south of Ungava Bay (Scott, 1998) and a 1950 + 6/ − 4...terrane, the fault is steeply south-dipping to overturned on the south flank of the basement-cored culminations...alternating layers of actinolite – chlorite, plagioclase and calcite. Microstructural changes towards |  | | Journal (article/letter/editorial) | | Orogeny in west Texas Stephen W. Grimes a,∗ , Peter Copeland b b a Department of Geological Sciences, University...northeastern US, and shearing in the Natal Province, South Africa, suggesting ultimate closure of the Grenville...1016/j.precamres.2003.12.004 24 S.W. Grimes, P. Copeland / Precambrian Research 131 (2004) 23–54 Fig....the new results to yield a complete picture of P–T conditions in the CMG. The major sources of new metamorphic...after, or as a continuation of, S.W. Grimes, P. Copeland / Precambrian Research 131 (2004) 23–54 the reverse-motion |  | Dwyer, R. C., Collins, W. J., Hack, A. C., Hegarty, R., Huang, H.-Q. (2018) Age and tectonic significance of the Louth Volcanics: implications for the evolution of the Tasmanides of eastern Australia. Australian Journal of Earth Sciences, 65 (7) 1049-1069 doi:10.1080/08120099.2018.1469392 | Journal (article/letter/editorial) | | Geoscience Journal of the Geological Society of Australia ISSN: 0812-0099 (Print) 1440-0952 (Online) Journal...for the evolution of the Tasmanides of eastern Australia R. C. Dwyer, W. J. Collins, A. C. Hack, R. Hegarty...for the evolution of the Tasmanides of eastern Australia, Australian Journal of Earth Sciences, DOI: 10...for the evolution of the Tasmanides of eastern Australia R. C. Dwyer , W. J. Collinsa,b, A. C. Hack a...University of Newcastle, Newcastle, NSW 2308, Australia; bEarth Dynamics Research Group, Department of |  | | Journal (article/letter/editorial) | | overlying Paleoproterozoic Cape Smith Belt (lowerplate, south-verging thrust belt), thermal-peak mineral growth...1994, St-Onge & Lucas 1995, Wodicka et al. 1997, Copeland 1999) that both predate and are synchronous with...Ramsay River orthogneiss, NA: Narsajuaq arc, NQO: New Quebec Orogen, SP: Superior Province basement. (1992)...orthopyroxene – clinopyroxene – hornblende – plagioclase – quartzofeldspathic pods ± ilmenite ± quartz...– clinopyroxene – hornblende – K-feldspar – plagioclase – quartz ± ilmenite ± biotite. In northern Quebec |  | | Journal (article/letter/editorial) | | Applied Geology, University of New South Wales, Sydney, N.S. W. 2052, Australia Received 21 June 1994; revision...6---0.7 GPa, based on the garnet-orthopyroxene-plagioclase-quartz assemblage (Fitzsimons and Thost, 1992;...Geoscience Section) 121 (1995) 317-326 roxene-plagioclase occurring in the basement sequence at Mt. McCarthy...have garnet as coronas between pyroxene and plagioclase. Using the garnet Sm-Nd dating method, the peak...medium to coarse-grained, quartz + K-feldspar + plagioclase +__garnet ___biotite dykes, sheets and lenses |  | | Journal (article/letter/editorial) | | 3 to 16 cm across. Type I consists mainly of plagioclase, quartz, K-feldspar, biotite and hornblende with...K-feldspar (c. 3 cm across). It consists mainly of plagioclase, quartz, K-feldspar, biotite and hornblende with...to anhedral phenocrysts of plagioclase in a matrix dominated by plagioclase, quartz, biotite and clinopyroxene...granodiorite and monzogranite. It consists mainly of plagioclase, quartz, K-feldspar, biotite and hornblende with...part of the study area. It consists mainly of plagioclase, quartz, K-feldspar, biotite and hornblende with |  | | Journal (article/letter/editorial) | | Zn-Pb-Cu and Mount Lyell Cu deposits, Tasmania, Australia C. Perkins Department of Geology and Research...AustralianNational University,Canberra, ACT 0200, Australia Received: 5 October 1994/Accepted: 29 March 1995...Zn-Pb-Cu and Mount Lyell Cu deposits, Tasmania, Australia, has determined a succession of deformation events...widespread crustal shortening in southeastern Australia, as established from the dating of alteration...Middle Cambrian Mount Read Volcanics, Tasmania, Australia (Fig. 1), are richly mineralized with polymetallic |  | | Journal (article/letter/editorial) | | be Paleo- or Mesoproterozoic terranes of 141 Australia or East Antarctica that match the age of detrital...Villenueve, 2003). The rare earth elements (REE), Th, Y, Co, and Sc are in many cases preserved when transferred...and geochronological studies of detrital minerals. New high-precision geochemical analyses of extensive...argillites have an assemblage of quartz with minor plagioclase and microcline, in a matrix of chlorite and illite-micas...2000). Sandstones have an assemblage of quartz, plagioclase, with b 5 modal percent K-feldspar, muscovite |  | Zhou, Aorigele, Dai, Jin-Gen, Li, Ya-Lin, Li, Han-Ao, Tang, Ju-Xing, Wang, Cheng-Shan (2019) Differential exhumation histories between Qulong and Xiongcun porphyry copper deposits in the Gangdese copper metallogenic Belt: Insights from low temperature thermochronology. Ore Geology Reviews, 107. 801-819 doi:10.1016/j.oregeorev.2019.03.023 | Journal (article/letter/editorial) | | central GMA post ∼13 Ma were < 2 km, except for north–south rifting zone and river valley. These observations...Thrust; LMF: Longer-Milashan Fault; SNSZ: Shiquanhe-Nam Co mélange Zone; XLOBDS: Xietongmen-Lhasa-Oiga brittle-ductile...characteristics of the GMA is that it is cut by several north–south rifts, and the eastward flowing Yarlung River. The...the north and the Yarlung-Zangbo suture to the south (Allègre et al., 1984; Dewey et al., 1988; Li et...dike swarms are often associated with the north–south-striking normal faults (Hou et al., 2004b, 2009; |  | | Journal (article/letter/editorial) | | Stellenbosch University, Private Bag X1, Matieland 7602, South Africa a r t i c l e i n f o Article history:...rocks between ~155 and 50 Ma. This dataset puts new constraints on the timing of carbonatite and alkaline...niobium/tantalum at the time. However, since then new carbonatite bodies have been identified and the rapid...carbonatite and/or alkaline complexes from north to south are: 1 — Kechika area, 2 — Aley, 3 — Lonnie and...Mountain, 7 — Perry River and Mount Grace, 8 — Mount Copeland, 9 — Three Valley Gap, 10 — Ice River Complex |  | | Journal (article/letter/editorial) | | the granitoid rocks of the Lachlan Fold Belt, Australia: An electron microprobe study Aaron B. Kelts,...and S-type granitoids of the Lachlan Fold Belt, Australia, whose petrology and zircon chronology have been...inherited monazite component within igneous rocks (Copeland et al. 1988; Harrison et al. 1995; Kalt et al...of the Lachlan Fold Belt (LFB), southeastern Australia. These rocks were chosen because they have been...post-breakup volcanism and reactivation. Rifting of Australia from another large continent (possibly Laurentia) |  | Espanon, Venera R., Chivas, Allan R., Kinsley, Leslie P.J., Dosseto, Anthony (2014) Geochemical variations in the Quaternary Andean back-arc volcanism, southern Mendoza, Argentina. Lithos, 208. 251-264 doi:10.1016/j.lithos.2014.09.010 | Journal (article/letter/editorial) | | Wollongong, NU a SC R Dossetoa,b NSW 2522, Australia. Wollongong Isotope Geochronology Laboratory... MA b University of Wollongong, NSW 2522, Australia. c Research School of Earth Sciences, The Australian...National University, Canberra, ACT 0200, TE D Australia. Allan R. Chivas: toschi@uow.edu.au CE P Leslie...signature has been inferred despite being only 30 km south of the LLVF. However the PMVF has a composition...distribution maps of geochemical ratios. Using this new approach, the decrease in arc signature can be traced |  | | Journal (article/letter/editorial) | | 11 kbar, and which developed during top-to-the-south directed shearing. The upper portion of the Greater...across the Himalayan front. These results provide new insights into the coupled role of deformation and...The upper series of shear zones, the normalsense South Tibetan detachment system (STDS), broadly operated...ml Hu Mu gu K hol a 30° hol a GM H STDS South Tibetan detachment system MCT Main Central thrust...Hodges (2000), Searle et al. (2008), Murphy & Copeland (2005), and Robinson et al. (2006). GMH, Gurla |  | Zhao, Junxing, Qin, Kezhang, Xiao, Bo, McInnes, Brent, Li, Guangming, Evans, Noreen, Cao, Mingjian, Li, Jinxiang (2016) Thermal history of the giant Qulong Cu–Mo deposit, Gangdese metallogenic belt, Tibet: Constraints on magmatic–hydrothermal evolution and exhumation. Gondwana Research, 36. 390-409 doi:10.1016/j.gr.2015.07.005 | Journal (article/letter/editorial) | | Applied Physics, Curtin University, Perth, WA6945, Australia 3. Economic Geology Research Centre (EGRU), School... James Cook University, Townsville Qld 4811, Australia 4. Key Laboratory of Continental Collision and...5% Cu and 0.5 Mt of 0.03% Mo (Tibet Julong Copper Co. Ltd., 2008). Recent studies have described the geological...Early-Middle Jurassic Yeba Formation (Tibet Julong Copper Co. Ltd., 2008). Large-scale hydrothermal alteration...Tibet Julong Copper Co., Ltd. (2008) has subdivided into four strata CE units from south to north (Figure |
|
