 | Salminen, J., Donadini, F., Pesonen, L. J., Masaitis, V. L., Naumov, M. V. (2006) Paleomagnetism and petrophysics of the Jänisjärvi impact structure, Russian Karelia. Meteoritics & Planetary Science, 41 (12) 1853-1870 doi:10.1111/j.1945-5100.2006.tb00456.x | Journal (article/letter/editorial) |
| Paleomagnetism and petrophysics of the Jänisjärvi impact structure, Russian Karelia J. SALMINEN1*, F. DONADINI1...1Division of Geophysics, Department of Physical Sciences, P.O. Box 64, FIN-00014 University of Helsinki...Sredny Prospect 74, Saint Petersburg, RUS-199106, Russia *Corresponding author. E-mail: johanna.m.salminen@helsinki...and target rocks from the Lake Jänisjärvi impact structure, Russian Karelia. The impactites (tagamites...electron microscope (SEM) analysis document the presence of primary multidomain titanomagnetite with additional |
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| GEOLOGIQUE DE FINLANDE N:o 55 ON VOLCAN1C NECKS IN LAKE )ÄNIS)ÄRVI IN EASTERN f'INLAND BY PENTTI ESKOLA...Related Dike rock, by I. G. SUNDELL. Witb one plate of figures. August 1905 ........................ 3:-...DE FINLANDE N:o 55 ON VOLCANIC NECKS IN LAKE JÄNISJÄRVI IN EASTERN fINLAND BV PENTTI ESKOLA HELSINGFORS...in a region southeast OI Lake Jänisjärvi in Eastern Finland, and north OI Lake Laatokka (Ladoga), several...glacial boulders of an aphanitic volcanic rock. On the southeast shore of Jänisjärvi the boulders DJake |
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| MMISSION GEOLOGIQUE DE FINLANDE N:o 67 'rRACING OF GLACIAL BOULDERS AND ITS APPLICATION IN PROSPECTING...August 1900 ................... 6: On the Occurrence of Gold IllFmlllsh Laphlld, by CUI(T .l!'IRCKS. Witb... Contents.. Jntroduct,ion Examples of the distribution and traeing of boulders .. . ... . . .... . . ..... . . . . .. . . .. . . . .. . '.rhe pyritic ore of Otravaara . . . . . . . . . . . . . . . . . . . ...ore of Jalonvaara. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. The dacite of Jänisjärvi |
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| COMMISSION GEOlOGIOUE DE FINLANDE N:o 182 RADIOACTIVE AGE OF SOME FINNISH PRE-CAMBRIAN MINERALS BY OLAVI KOUVO...COMMISSION G~OLOGIQUE DE FINLANDE N : o RADIOACTIVE AGE OF SOME FINNISH PRE-CAMBRIAN MINERALS BY OLAVI KOUVO.... . . . . . . . . . . . . • . . . . . SEPARATION OF MINERALS ............... .... ....... . . . ....... . . . . . . . . • . . . . . . 28 MEASUREMENT OF THE UNIT -CELL DIMENSIONS . .. . . . . . . . . ..... . . . . . . . . • . . . . . 31 31 COMPARISON OF AGE DATA . . . . . . . . . . . . . . . . . . . . |
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| Geological Survey of Finland Bulletin 282 Lake Lappajärvi, a meteorite impact site in western Finland...read spaced • Geological Survey of Finland, Bulletin 282 LAKE LAPPA]ÄRVI, A METE OR ITE IMPACT SITE...IM USLAIT O S ES POO 1 976 Lehtinen, M. 1976. Lake Lappajärvi, a meteorite impact site in western Finland...roughly elliptical lake covering an area of 160 km' . The surrounding bedrock consists of Precambrian granite...granite pegmatites and mica gneisses. The lake occupies an area of low magnetic relief, and the preliminary |
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| Geological Survey of Finland Bulletin 297 On the geology and the Cambrian sediments of the circular depression... Geological Survey of Finland, Bulletin 297 ON THE GEOLOGY AND THE CAMBRIAN SEDIMENTS OF THE CIRCULAR DEPRESSION...vaara, J. and Boström, R . 1978: O n the geology of the circular depression at Söderfjärden, western...and 4 tables. The conspicuous circular structure of Söderfjärden was studied by geological observations...tologically dated to Lower Cambrian. The occurence of a tuffaceous breccia indicates that the structure |
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| DE FINLANDE N :o 156 ON SULPHIDES OF THE SULPHIDE-BEARING SCHISTS OF FINLAND BY VLADI MARMO AND AIMO MIKKOLA...DE FINLANDE N:o 156 ON SULPHIDES OF THE SULPHIDE-BEARING SCHISTS OF FINLAND BY VLADI MARMO AND AIMO MIKKOLA........................ G 3. MICROSCOPIC STUDIES OF ORE MINERALS IN THE SULPHI DESCHISTS .............. ............. 'i A) SOME SULPHIDE - SCHISTS OF THE SVECOFENNIDIC AREA I SOUTHERN FI:NLAXD ...SULPHIDE-SCI-IISTS OF ETELÄ-POI-IJANMAA .. . . . . . . . . . . . . . ... . 13 c) SULPI-IIDE-SCI-IISTS OF KESKI-POHJANMAA |
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| 1 .:&-C. ( R o ' ON THE GEOLOCY AND TECTONICS OF THE OUTOKUMPU ORE FIELD AND REGION BY H E l K K...CEOLOG~QUEDE FINLANDE N:o 124 ON THE CEOLOGY AND TECTONICS OF THE OUTOKUMPU ORE FIELD AND REGION WITH 1 1 FIGURES...T H ? DEVELUPMENT O F ITS OUTPUT T E E SPBEADXNG OF GLACIAL BOULDEBS MINOR OCCUFBENCES O F 8tJLPHIDE...FEATURES AND ROCK SERiES OF THE rnCfI0N THE FAULT AND JOINTING TECTONICS OF T H E REGION ........ ....FAULT-LINE 0FISSURES AXD SOINTINO DIRECTIONS THE ORIGIN OF CRACKS AND FAULTS ................... ........ |
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| Geological Survey of Finland Bulletin 301 The Karelian formations and their depositional basement in...Geologinen tutkimuslaitos Espoo 1979 Geological Survey of Finland, Bulletin 301 THE KARELIAN FORMATIONS AND...Kiihtelysvaara- Värtsilä area, East Fin land. Geological Survry of Finland, Bulle/in 301. 141 pages, 69 figures, 19...appendices. The study describes the general sequence of the Karelides in the Kiihtelysvaara-Värtsilä area...geochemistry of each unit. The aim is an accurate and generally applicable history of the evolution of the Karelian |
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| BELT 20 27 OROGENIC PLUTONIC ROCKS PLUTONIC ROCKS OF THE SVECOFENNIDIC BELT ................ 30 .....PLUTONIC ROCKS OF THE KARELIDIC BELT UNMETAMORPHIC SEDIMENTARY ROCKS ARKOSE SANDSTONE OF SATAKUNTA ........ . ........ . .......... . 36 SILTSTONE OF MUHOS 37 QUARTZ SANDSTONE 38 ANOROGENIC IGNEOUS..... . . .. ... 47 INTRODUCTION The rock crust of Finland belongs to the Fennoscandian Shield, whose...southeastern boundary. The bedrock of Finland represents a deeply denuded section of the pre-Cambrian mobile belts |
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| the alkali rocks of Iivaara was back in the year 1945, when, under the direction of my esteemed teacher...alkaline district of Iivaara in the collections of the Institute of Geology of the University of Helsinki. In...In the summer of 1954 I was given the opportunity of doing field work and collecting material from the...In this work and in that carried out on the basis of the earlier material, I received noteworthy assistance...material at the laboratory of the Geological Survey of Finland under the guidance of Prof. Lauri Lokka and |
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| . .. .. .. . . 7 THE MAIN GEOLOGICAL FEATURES OF THE VUOLIJOKI REGION 10 EARLIER STUDIES . .......... ..... ...•. ••...... ....... ... THE ROCKS OF THE REGION THE STRIPED GNEISS .. . . . . . . . .... .. .. . . •• . . . . 29 GEOLOGIC DESCRIPTION OF THE OTANMÄKI ORE FJELD .. ..... . 32 ORE DEPOSITS...STRUCTURE AND CLASSIFICATION OF THE ORE ROCKS .. . . . .. . 42 MICROSCOPIC FEATURES OF THE ORE ROCK 48 THE...THE METAL CONTENT OF THE ORE . ... .......••... ..... . . .... 51 OF THE REGION ... . . .... ... . |
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| COMMISSION GEOlOGIQUE OE FINLANOE N:o 177 THE STRUCTURE OF AN ARCHEAN AREA: ORIJÄRVI, FINLAND BY HEIKKI v...COMMISSION G~OLOGIQUE OE FINLANOE N:o THE STRUCTURE OF AN ARCHEAN AREA: ORIjÄRVI. FINLAND BY HEIKKI v....... .. ......... ................ CO ORDINATION OF MAPS l\:t:AGNETIC SURVEY .. . . . . . . . . . .... . . . . . . . . . 8 REDUCTION AND COMPILATION OF FIELD MAPS ............. ...... . GEOLOGIC 8 MAGNETIC.... STRUCTURAL SIGNIFICANCE OF THE GEOPHYSICAL MAP .. .. ..... . ROCKS OF THE REGION. . . . . . . . . |
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| GRANITES 24 MIGMATIC POTASH GRANITE HOMOGENEOUS BIOTITE AND ! OR GARNET-BEAItING POTASH GRANITE COARSE-GRAINED..... . . . . . . . .. . SUPPLEMENTARY EXAMINATION OF GRANITE ANALYSES ....... . PEGMATITES ... . ........................ . ........ .. . SUMMARY REVIEW OF THE ARCHEAN INFRACRUSTAL GEOLOGY IN THE PERNAJA D...47 47 48 49 51 THE LOCATION OF MINERALIZATIONS AND PARAGENIC PROPERTIES OF THE ORES .. . . . . . . .... . . . . . . .. 51 DISCUSSION ON T H E ORI GIN OF THE ORE MINERALIZATIONS AS RE. . .. ... . . . . |
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| PRESS TABLE OF CONTENTS. Page PREFACE EARLIER 5 CO~CEPTIONS OF THE RELATIONS OF '1.'HE BOTHNIA~...SUBSTRATU)[.. OUTLINE OF THE OENERAL GEOLOGY OF THE REGION.... . . PETROLOGICAL DESCRIPTIO~ OF THE DIORITIC AND...PEBBLES··. ... . . ... . . . .. . . .. THE BRECCIA OF JAAKKOLA .... . . ... . .. .. .. .......... . . ........ DIORITIC )IETA-ARKOSES A~D SCHISTS N.E. OF LAKE VÄIÜ. LAISJÄRYI' . . .. . . . . . . .. . . . ....CO~GLOl\'IERATIC ZO~E OF LAKE JYR)1YSJ_~RVI ... . .... THE COKGLOl\'IERATIC ZOKE AT THE SOUTHERN CONTACTS OF THE AREA |
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| DE FINLANDE N:o 148 STRUCTURAL HISTORY OF THE EASTERN PART OF THE GULLKRONA BASIN, SW-FINLAND BY NILS...DE FINLANDE N :o 148 STRUCTURAL HISTORY OF THE EASTERN PART OF THE GULLKRONA .BASIN, SW-FINLAND BY NILS... . .. . ......... . ..... . ........ . . OUTLINE OF THE GEOLOGY .... . .............. . . . ...........•. . .. .. . . . .. . . . . . . . . . 30 DIKES OF :\IIGl\IATITIC GRANITE . . . . •• . . . . . . . ...INTRUSION OF THE DIABASE (TRAP) DIKES . . . . . . . . . . . . . . . . . . . . . . . . . INTRUSION OF THE ORTHOCLASE-BEARING |
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| that all of the lead is of radioactive origin. This may not be valid, but the analysis is of interest...interest as at least showing the presence of thorium , uranium and lead». Ein viel besseres Gegenstück zu der...Y()Jl Var ala. '27 Tab. 8. Wasserabgabe der Biotite von Varala. Bei 110· a GI A • . • • • • • '0...GI A. Im Vergleich mit GI A , wären diese drei Biotite somit auf Grund des Wassergehaltes sicher als primär...Entwässerungswerte zu erwarten hat , obwohl sie alle frische Biotite sind. Bei den umgewandelten Orthiten wurde ähnliches |
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| FINLAND THE AGE OF THE SURROUNDING GABBRO-ANORTHOSITE COMPLEX AND THE CRYSTALLIZATION OF RAPAKIVI BY ANTTI...FINLAND THE AGE OF THE SURROUNDING GABBRO-ANORTHOSITE COMPLEX AND THE CRYSTALLIZATION OF RAPAKIVI BY ...Valtioneuvoston kirjapaino PREFACE I have the honor of being a pupil of Prof. Pe nt ti Es k 0 I a, and it is from...kar i, director of the Geological Survey of Finland, and Dr. A h t i Si mon e n, chief of department at...Geological Survey. I further wish to acknowledge my debt of gratitude to the E mi 1 Aal ton e n F 0 und a t ion |
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| GEOLOGIQUE DE FINLANDE N:o 122 ON THE PETROLOGY OF FINNISH QUARTZITES BY ANNA HIETANEN WITH Z9 FIGURES...GEOLOGIQUE OE FINLANOE N:o 122 ON THE PETROLOGY OF FINNISH QUARTZITES BY ANNA HIETANEN WITH 2~ FI... .. . . . . . . . . . . . . .\. QUARTZTTE AREAS OF SOUTH OSTROBOTJ-INIA . . . . . . . • . . . . . •...::\'lineralogy of t h e qua l'tzitp. Thc l\ [a ngan ese ::\'linerals . . Potrofabrios of quartz .......... . . . . . . . . . . . . . . . QUARTZITE AREAS OF W ESTERN LAPLAND . . . . . . . . . . .• . . . . |
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| CONTRIBUTIONS TO THE KNOWLEDGE OF THE CHEMISTRY OF THE RADIOACTIVE MINERALS OF FINLAND BY LAURILOKKA WITH...CONTRIBUTIONS TO THE KNOWLEDGE OF THE CHEMISTRY OF THE RADIOACTIVE MINERALS OF FINLAND BY LAURILOKKA \'(11T...Photometrie Determination of Nb 2 0 S in Mixed oxides Nb 2 0 5 +Ta 2 0 On the Ohemistry of Wiikite . ..........on the Formula of Wiikite . ... ... .. ... . .. . . S 37 39 . . 48 55 ON THE AGE OF THE RADIOAOTIVE...WIIKITE FROM SALLA, E. LAPLAND. A NEW OOOURRENOE OF WIIKITE . . ....... . .... ... .......... . .... |
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| COMMISSION GEOlOGIOUE DE FINLANDE N:o 189 PLUTONIC ROCKS OF THE SVECOFENNIDES IN FINLAND BY AHTI SIMONEN with...COMMISSION GEOLOGIQUE DE FINLANDE PLUTONIC ROCKS OF THE SVECOFENNIDES IN FINLAND By AHTI SIMONEN w... CONTENTS Page PREFACE 5 HISTORICAL OUTLINES OF THE STUDY OF THE SVECOFENNIDIC PL UTONIC ROCKS ............ . . . . . . .. TAMPERE AREA AND ADJOINING PART OF CENTRAL FINLAND. . . . . . . . . . . 45 46 MIDDLE... . . . . . . . . . . . . . . . . 64 COMPARISON OF MINERALOGICAL AND CHEMICAL CHARACTERIS· TICS. .. |
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| . . . . . . ... . . . . . Zwe i feinschuppige Biotite von Helsinki ... . ....... . ......... . .. Lepidomelan...Muskowit von Uiherla in Eräjärvi. Zwei feinschuppige Biotite von Helsinki. Lepidomelan von Elfvik bei Helsinki...FEINSCHT PPIGE BIOTITE VON HELSIN Kr. Diese glänzendschwarzen und feinschuppigen Biotite kamen als schmale...Abgesehen von der Farbe des Pulvers sind diese Biotite sonst sehr ähnlich. Sie werden hier bezeichnet...Analysen (Aufschluss mit Soda) zeigen, dass diese Biotite auch in chemischer Beziehung einander sehr ähnlich |
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| GEOLOGIQUE DE FINLANDE N:o 133 ON THE GEOCHEMISTRY OF TANTALUM BY KALERVO RANKAMA WITH I FIGURE IN...GEOLOGIQUE DE FINLANDE N :o 133 ON THE GEOCHEMISTRY OF TANTALUM BY KALERVO RANKAMA WITH 1 FIGURE IN THE... _ . _ . _ 5 7 !J !) CHOICE OF THE METHOD FOR THE PRE-E:SRICHMENT OF THE EARTH ACIDS .• _ ... . . ..... . . . . . . . . . .. . . - . - . . TECHNIQ.UE OF THE PRE-ENRICHMENT I. SA:liPLING . . . . . . . ..... . . . . . . • - . . . . . . J I. DECOMPOSITION OF THE SAMPLES ......................... . ...... |
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| TOIMITTAJA-EDITOR MAUNO L EHIJÄRVI GEOLOGICAL SURVEY OF FINLAND OTANIEMI, FINLAND Helsinki 1965. Valtioneuvoston...SAVOLAHTI, On the Schists and Associated Intrusive Rocks of the 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Vieremä...ANFERÄ., A R estudy of ,)Karamsini te,) ..... . . . . K. J. NEUVONEN, Paleomagnetism of the Dike Systems...Systems in Finland . 1. Remanent Magne tisation of Jotnian Olivine Dolerites in Southwestern Finland .. ......Columbite and Tapiolite from the P egmatite Area of Tamrnela and Somero in SW Finland ...... ..... . |
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| TOIMITTAJA-EDITOR MAUNO L EHIJÄRVI GEOLOGICAL SURVEY OF FINLAND OTANIEMI, FINLAND Helsinki 1965. Valtioneuvoston...SAVOLAHTI, On the Schists and Associated Intrusive Rocks of the 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Vieremä...ANFERÄ., A R estudy of ,)Karamsini te,) ..... . . . . K. J. NEUVONEN, Paleomagnetism of the Dike Systems...Systems in Finland . 1. Remanent Magne tisation of Jotnian Olivine Dolerites in Southwestern Finland .. ......Columbite and Tapiolite from the P egmatite Area of Tamrnela and Somero in SW Finland ...... ..... . |
