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作者:M. Nironen
来源:[J].Bulletin of the Geological Society of Finland(IF 0.786), 2017, Vol.89 (1), pp.5-19
摘要:Svecofennian orogen that contain ultramafic rocks. New samples were collected from the picritic and basaltic rocks as well as spatially associated gabbroic rocks, and their major and trace element compositions are presented and discussed here. Although the metavolcanic rocks have...
作者:... F. Hellström , T. Niiranen , M. Nironen
来源:[J].Precambrian Research(IF 4.441), 2015, Vol.256, pp.102-119
摘要:Abstract(#br)Altogether 1130 U–Pb analyses on zircons from 25 samples across the Pajala shear zone in northern Fennoscandia were performed by LA-ICPMS methodology to study the origin of the zone. The samples were also analyzed for their Sm–Nd isotope systematics and geochemi...
作者:M. Nironen , I. Mänttäri , M. Väisänen
来源:[J].Bulletin of the Geological Society of Finland(IF 0.786), 2016, Vol.88 (2), pp.85-103
摘要:Because of the relatively low metamorphic grade, low strain and well-preserved early structures in volcanic and volcaniclastic rocks, the Orijärvi triangle (in the center of the larger Orijärvi area) is one of the few locations in the Svecofennian orogen of southern Finland ...
作者:M. Nironen , B.A. Elliott , O.T. Rämö
来源:[J].LITHOS(IF 3.779), 2000, Vol.53 (1), pp.37-58
摘要:Abstract(#br)The evolution of the Svecofennian Orogen spans from 1.95 Ga to 1.80 Ga with the main crust-forming activity having taken place 1.90–1.87 Ga ago. Subsequent deformation was largely concentrated to southern Finland where transpressional structures indicate lithosp...
作者:R. Lahtinen , M. Nironen
来源:[J].Precambrian Research(IF 4.441), 2010, Vol.183 (4), pp.770-790
摘要:Abstract(#br)A Paleoproterozoic lateritic paleosol overlain by ultra-mature/mature quartzite is reported for the first time from three localities in the Svecofennian province in southern Finland. These are important indicators for warm paleoclimate and continental paleoenvir...
作者:M. Nironen , E. Ogenhall ...
来源:[J].Precambrian Research(IF 4.441), 2007, Vol.161 (3), pp.231-249
摘要:Abstract(#br)Detrital zircon U–Pb SIMS data on quartz-rich metasandstone units presumed to belong to the upper part of the Svecofennian stratigraphy in southeastern Finland and east-central Sweden suggest the existence of clastic sedimentary basins between the two main oroge...
作者:... O. T. Rämö , M. Vaasjoki , M. Nironen
来源:[J].Mineralogy and Petrology(IF 1.681), 2005, Vol.85 (3-4), pp.223-241
摘要:Summary(#br)Oxygen isotope ratios of igneous zircon from magmatic rocks in Finland provide insights into the evolution and growth of the Precambrian crust during the Svecofennian orogeny. These data preserve magmatic δ 18 O values and correlate with major discontinuities in ...

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