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Geological Survey of Finland Bulletin 356 The chronostratigraphy of southwestern Finland with special reference...tutkimuskeskus Espoo 1991 Geological Survey of Finland, Bulletin 356 ERRATA page 12, line 5 for cm3... Geological Survey of Finland, Bulletin 356 THE CHRONOSTRATIGRAPHY OF SOUTHWESTERN FINLAND with special reference... 1991. The ehronostratigraphy of southwestern Finland, with special reference to Postjotnian and Subjotnian...Subjotnian diabases. Geological Survey 01 Finland, Bulletin 356. 100 pages. 63 figures, 18 tables and 5 |
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Survey of Finland Bulletin 294 Rapakivi granites and other postorogenic rocks in Finland: their age...Survey of Finland, Bulletin 294 RAPAKIVI GRANITES AND OTHER POSTOROGENIC ROCKS IN FINLAND: THEIR AGE... Vaasjoki, M . 1977: Rapakivi granites and other postorogcnic rocks in Finland: their age the lead isotopic...galena mineralizations. Geological S"yvB)' o{ Finland, Bulletin 294. 66 pages, 10 figs., 12 tab les,...The ages of the postorogen ic rocks of southern Finland have been investiga ted by uti lizing the U-Pb |
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of Proterozoic rapakivi granites? Examples from the western United States and Finland Eric H. Christiansen...O. Box 64, FIN-00014, University of Helsinki, Finland School of Earth and Environmental Sciences, Washington...fugacities and are dominated by magnetite and have titanite as an accessory mineral. Post-eruption vapor-phase...members of rapakivi granite complexes, especially those of Proterozoic age in southern Finland. This suggests...suggest that topaz rhyolites (and by extension rapakivi granites) are probably not simply melts of mid-crustal |
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Rare Earth Elements Deposits and Occurrences in Finland Thair Al-Ani 1, *, Ferenc MolnĂĄr 1 1 2 3 * ID...Geological Survey of Finland (GTK), Betonimiehenkuja 4, FI-02151 Espoo, Finland; ferenc.molnar@gtk.fi...fi Geological Survey of Finland (GTK), LĂ€hteentie 2, FI-96101 Rovaniemi, Finland; panu.lintinen@gtk.fi...Geological Survey of Finland (GTK), Neulaniementie 5, FI-70211 Kuopio, Finland; seppo.leinonen@gtk.fi...important REE prospects and metallogeny of REE in Finland. There is a particularly good potential for future |
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Precambrian Geology, 14 PRECAMBRIAN GEOLOGY OF FINLAND KEY TO THE EVOLUTION OF THE FENNOSCANDIAN SHIELD...Precambrian Geology, 14 PRECAMBRIAN GEOLOGY OF FINLAND KEY TO THE EVOLUTION OF THE FENNOSCANDIAN SHIELD...University of Helsinki, Finland P.A. NURMI Geological Survey of Finland Espoo, Finland .. .. O.T. RAMO University...University of Helsinki, Finland ELSEVIER Amsterdam â Boston â Heidelberg â London â New York â Oxford...Svecofennian bedrock ........................13 6. Rapakivi magmatism and the Jotnian period ............ |
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the Proterozoic Suomenniemi rapakivi granite complex, southeastern Finland E. Suikkanen, O.T. RÀmö PII:...the Proterozoic Suomenniemi rapakivi granite complex, southeastern Finland. The address for the corresponding...the Proterozoic Suomenniemi rapakivi granite complex, southeastern Finland E. Suikkanen1, O.T. RÀmö Department...Geosciences and Geography, University of Helsinki, Finland Corresponding author, email: einari.suikkanen@helsinki...A-type, ferroan Suomenniemi rapakivi granite complex in southeastern Finland contains numerous dikelike |
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University of Helsinki, P.O. Box 00014 Helsinki, Finland Institute of Mineral Resources, Chinese Academy...plagioclase-mantled alkali feldspar megacrysts (rapakivi texture sensu lato). The felsic rocks contain...and late assemblages (matrix minerals) of the rapakivi-textured granitoids. Al contents in amphibole...MgO, Na2O and CaO than the early assemblages. Rapakivi texture is interpreted in this case mainly as...conditions; Rapakivi texture; Magma mixing; Granitoids; Qinling 1. Introduction Rapakivi texture (ovoidal |
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1995 Printed in Austria One hundred years of Rapakivi Granite O. T. R/im6 and I. Haapala Department of Geology...Helsinki, Finland With 11 Figures Received March 17, 1993; accepted December 10, 1993 Summary Rapakivi granites...recently redefined as A-type granites showing rapakivi texture at least in the larger batholiths, occur...silicic intraplate magmatism on Earth. Most of the rapakivi granites are Proterozoic (mainly 1.0 to 1.7 Ga)...Fe-enriched intermediate rocks, and monzonite, beside granite; mingling of silicic and mafic magmas is typical |
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been proposed for the anorogenic (1.65â1.51 Ga) rapakivi granites in the Svecofennian Domain. In this paper...granitoids have a wide range of compositions (gabbro to granite), a calcic and calcalkaline chemistry and I-type...south-central Sweden (Bergslagen) and in south-central Finland. 2.2. Late-Svecofennian granitoids Fig. 1. Principal...range in composition from quartz monzodiorite to granite sensu stricto and exhibit commonly coarse-grained...occur abundantly (10â30%), as well as idiomorphic titanite. Small (centimetre to decimetre sized) rounded |
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38â58. Accessory Minerals from the Primorsky Rapakivi Granite Complex, West Baikal Region V. B. Savelâevaa...quartzâmuscoviteâtopaz greisens from the Primorsky rapakivi granite complex, West Baikal region, were studied...1968; Tipomorfizm âŠ, 1989). The Primorsky rapakavi granite complex in the West Baikal region dated at 1.86â1...phases and several facial varieties including rapakivi granite (Obukhov, 1979; Bukharov, 1987; Petrova, Makrygina...708 ACCESSORY MINERALS FROM THE PRIMORSKY RAPAKIVI GRANITE COMPLEX equigranular biotite granites, and |
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com/locate/lithos Oxidized, magnetite-series, rapakivi-type granites of CarajĂĄs, Brazil: Implications...Davis Carvalho de Oliveira Group of Research on Granite Petrology, Centro de GeociĂȘncias, Universidade...representative A-type granites, including Finnish rapakivi and Lachlan Fold Belt A-type granites, as well...granites. The contrast of Al2O3 contents in these two granite groups is remarkable. The CaO/ (FeOt +MgO+TiO2)...petrological contrasts between distinct A-type granite groups. Assuming conditions near the NNO buffer |
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P.O. Box 64, FI-00014, University of Helsinki, Finland Received 9 June 2003; accepted 9 September 2004...the 1.67â1.47 Ga rapakivi granites of Finland and vicinity to the 1.70â1.68 Ga rapakivi granites of the...Basin and Range Province of southern Nevada. In Finland and China, the tectonic setting was incipient,...swarms of diabase and rhyoliteâquartz latite dikes. Rapakivi texture with plagioclase-mantled alkali feldspar... Keywords: A-type granite; Bimodal association; Rifting; Diabase; Rapakivi granite 1. Introduction * |
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Survey of Finland Bulletin 326 Petrography, mineral chemistry and petrochemistry of granite porphyry...porphyry dykes from Sibbo, southern Finland by Ragnar Törnroos Geologian tutkimuskeskus Espoo 1984 Geological...Survey of Finland, Bulletin 326 PETROGRAPHY, MINERAL CHEMISTRY AND PETROCHEMISTRY OF GRANITE PORPHYRY...PORPHYRY DYKES FROM SIBBO, SOUTHERN FINLAND by RAGNAR TĂRNROOS with 22 figures and 13 tables GEOLOGIAN TUTKIMUSKESKUS...petrochemistry of granite porphyry dykes from Sibbo, so uthern Finland. Geological Survey 01 Finland, Bulletin |
| Xie, Lei, Wang, Rucheng, Chen, Jun, Zhu, Jinchu, Zhang, Wenlan, Lu, Jianjun, Zhang, Rongqing (2013) A tin-mineralized topaz rhyolite dike with coeval topaz granite enclaves at Qiguling in the Qitianling tin district, southern China. Lithos, 170. 252-268 doi:10.1016/j.lithos.2013.03.001 | Journal (article/letter/editorial) |
tin-mineralized topaz rhyolite dike with coeval topaz granite enclaves at Qiguling in the Qitianling tin district...2013 Keywords: Qiguling topaz rhyolite Dike Topaz granite enclaves Cassiterite Qitianling Southern China...present as a dike within the Qitianling biotite granite batholith of the Nanling Range of southern China...wide and 500 m long, contains enclaves of topaz granite. These rhyolites contain up to 72 wt.% SiO2, have...sponge-textured ïŹlls between rock-forming minerals. Granite enclaves and their hosted rhyolite have similar |
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feldspathic rocks that range in composition from granite to quartz syenites to feldspathoid-bearing syenites...abundances, plot entirely within the âwithin plate graniteâ ïŹelds on trace element discrimination diagrams...feldspathic rocks may range in composition from granite, through syenite, to feldspathoid-bearing syenites...occur in the Phanerozoic, but the voluminous rapakivi granite intrusions common in the Proterozoic are rare..., 2003), contain minor amounts of peralkaline granite. Furthermore, it has long been recognized that |
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JULKAISUJA MEDDELANDEN FRĂN GEOLOGISKA SĂLLSKAPET I FINLAND COMPTES RENDUS DE LA SOCIETE GEOLOGIQUE DE FINLANDE...Prehnite and Its Occurrence in Kangas niemi Parish, Finland .............................. . ...... .. ......MAUNO LEHIJĂRVI and ANSSI LONKA, The Hornblende Rapakivi Dike of J aala - litti .................... ....the JyvĂ€skylĂ€ lee-Marginal Formation in Central Finland ......... . ....... . ..... . ...................Bodies in the RauhamĂ€ki - Kuronlahti District, Finland . . . . . . . . . . . . . . . . . . . . . . l054i |
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JULKAISUJA MEDDELANDEN FRĂN GEOLOGISKA SĂLLSKAPET I FINLAND COMPTES RENDUS DE LA SOCIETE GEOLOGIQUE DE FINLANDE...Prehnite and Its Occurrence in Kangas niemi Parish, Finland .............................. . ...... .. ......MAUNO LEHIJĂRVI and ANSSI LONKA, The Hornblende Rapakivi Dike of J aala - litti .................... ....the JyvĂ€skylĂ€ lee-Marginal Formation in Central Finland ......... . ....... . ..... . ...................Bodies in the RauhamĂ€ki - Kuronlahti District, Finland . . . . . . . . . . . . . . . . . . . . . . l054i |
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Geological Survey of Finland Bulletin 355 Petrogenesis of the Proterozoic rapakivi granites and related... Geological Survey of Finland, Bulletin 355 PETROGENESIS OF THE PROTEROZOIC RAPAKIVI GRANITES AND RELATED...Tapani, 1991. Petrogenesis of the Proterozoic rapakivi granites and related basic rocks of southeastern...Finnish and Soviet Karelian (1.65 to 1.54 Ga) rapakivi granites and penecontemporaneous diabase dykes...old Suomenniemi complex in southeastern Finland. The rapakivi granites occur as shallow-level multiple |
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peraluminous granite: an experimental study of the Kymi topaz granite stock, southern Finland S. Lukkari...Phase relations of F-rich Kymi equigranular topaz granite have been investigated experimentally at 100â500...experimental studies of the Kymi equigranular topaz granite indicate that plagioclase was the liquidus phase...University of Helsinki, P.O. Box 64, Helsinki 00014, Finland e-mail: sari.lukkari@helsinki.fi F. Holtz Institute...pressure may have been lower than 200 MPa for the granite. Introduction Fluorine is generally only present |
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Radiogenic isotopes of the Estonian and Latvian rapakivi granite suites: new data from the concealed Precambrian...Helsinki, Finland b Geological Survey o f Finland, Betonimiehenkuja 4, FIN-02150 Espoo, Finland c Institute...high-grade metamorphic rocks and unmetamorphosed rapakivi granites and related mafic rocks (mainly gabbros...anorthosites). Our U - P b zircon data show that small rapakivi granite plutons in Estonia are 1630 Ma old and felsic...Latvian rapakivi granites are similar to those of the classic rapakivi granites of southern Finland. Our |
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Publishers B.V., Amsterdam Granitoids of rapakivi granite-anorthosite and related associations * R.F...ABSTRACT Emslie, R.F., 1991. Granitoids of rapakivi granite-anorthosite and related associations. In:...Mid-Proterozoic anorthosite-mangerite-charnockite-rapakivi granite (AMCG) magmatic suites have commonly intruded...anorthositic and gabbroic rocks with the classic rapakivi granite suites of Fennoscandia and with those of the...characteristic of the classic Fennoscandian rapakivi granite suites. There remains little doubt that the |
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equigranular rapakivi granite and biotite granite in both igneous complexes, followed by topaz granite in the...complex (ABIC) and albite granite in the Madeira igneous complex (MIC). Rapakivi, porphyritic and granophyric...kbar for the rapakivi granites to below 650 jC and 1 kbar for the peralkaline albite granite. This suggests...granites are similar to those of other Proterozoic rapakivi granites. However, petrographic, geochemical and...Proterozoic rapakivi granite complexes commonly exhibit an evolution from hornblende granite to biotite |
| Bergh, S.G., Corfu, F., Priyatkina, Nadezhda, Kullerud, K., Myhre, P.I. (2015) Multiple post-Svecofennian 1750â1560 Ma pegmatite dykes in Archaean-Palaeoproterozoic rocks of the West Troms Basement Complex, North Norway: Geological significance and regional implications. Precambrian Research, 266. 425-439 doi:10.1016/j.precamres.2015.05.035 | Journal (article/letter/editorial) |
online 3 June 2015 Keywords: UâPb geochronology Granite pegmatites Fennoscandian Shield Mesoproterozoic...various generations of granite pegmatite dykes, which yield zircon and titanite UâPb ages ranging between...intrusion of coeval aged rapakivi granite suites (ca. 1.65â1.5 Ga) in Finland, and/or the Mesoproterozoic...2008), and the A-type rapakivi granite suites (1.65â1.50 Ga) of Russia and Finland (Fig. 1) formed by magmatism...discuss UâPb data of variably deformed 1758â1562 Ma granite pegmatite dykes from the Astridal 426 S.G. Bergh |
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TOIMIKUNTA BULLETIN DE LA COMMISSION GEOLOGIQUE DE FINLAND E N:o 136 SUOMEN CEOLOCISEN SEURAN JULKAISUJA...JULKAISUJA MEDDELANDEN FRĂN CEOLOCISKA SALLSKAPET 1 FINLAND COMPTES RENDUS DE LA SOCIETE CEOLOCIQUE DE FINLANDE...LKAISUJA MEDDELANDEN FRAN GEOLOGISKA SALLSKAPET I FINLAND COMPTES RENDUS DE LA SOCIETf: Gf:OLOGIQUE DE FINLANDE.... XXI Activities of the Geological Society of Finland in 1941 ............ . XXI Kokoukset - Meetings.... XXI\Activities of the Geological Society of Finland in 1942 ............ . Kokoukset - Meetings 1942 |
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TOIMIKUNTA BULLETIN DE LA COMMISSION GEOLOGIQUE DE FINLAND E N:o 136 SUOMEN CEOLOCISEN SEURAN JULKAISUJA...JULKAISUJA MEDDELANDEN FRĂN CEOLOCISKA SALLSKAPET 1 FINLAND COMPTES RENDUS DE LA SOCIETE CEOLOCIQUE DE FINLANDE...LKAISUJA MEDDELANDEN FRAN GEOLOGISKA SALLSKAPET I FINLAND COMPTES RENDUS DE LA SOCIETf: Gf:OLOGIQUE DE FINLANDE.... XXI Activities of the Geological Society of Finland in 1941 ............ . XXI Kokoukset - Meetings.... XXI\Activities of the Geological Society of Finland in 1942 ............ . Kokoukset - Meetings 1942 |