Age Dating Stellar Populations in the Near Infrared: An absolute age indicator from the presence/absence of red supergiants [PDF]
, 2012 The determination of age is a critical component in the study of a population of stellar clusters. In this letter we present a new absolute age indicator for young massive star clusters based on J-H colour.
Adamo, A. +6 more
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Rb-Sr whole-rock isotopic study of late Archaean and early Proterozoic granitoid intrusions, Kainuu, Eastern Finland [PDF]
Bulletin of the Geological Society of Finland, 1988 A tonalite-granodiorite-granite suite emplaced during the late Archaean D3 deformational phase yields a six point isochron age of 2,500 ± 270 Ma and an initial 87Sr/86Sr of 0.7044 ±0.0018.
A.N. Halliday +2 more
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Timing of Svecofennian crustal growth and collisional tectonics in Åland, SW Finland [PDF]
Bulletin of the Geological Society of Finland, 2004 In an effort to quantify the time parameter in the tectonomagmatic evolution of what has been called the Southern Svecofennian Arc Complex (SSAC) of SW Finland, advanced radiometric dating techniques have here been applied to rock groups of key ...
C. Ehlers, T. Skiöld, M. Vaasjoki
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Mid- and late-Holocene shoreline changes along the southern coast of the Gulf of Finland [PDF]
Bulletin of the Geological Society of Finland, 2013 In response to glacio-isostatic rebound in Estonia, a relative sea level fall occurred during the mid- and late-Holocene, and as a result, lowland regions in northern Estonia have experienced an evolution from sea to land.
I. Grudzinska +3 more
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The absolute age of the globular cluster M15 using near-infrared adaptive optics images from PISCES/LBT [PDF]
, 2015 We present deep near-infrared (NIR) J, Ks photometry of the old, metal-poor Galactic globular cluster M\,15 obtained with images collected with the LUCI1 and PISCES cameras available at the Large Binocular Telescope (LBT).
Arcidiacono, C. +28 more
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An ion microprobe U-Th-Pb study of zircon xenocrysts from the Lahtojoki kimberlite pipe, eastern Finland [PDF]
Bulletin of the Geological Society of Finland, 2001 Eleven relatively large (diameter 1–2 mm) zircon grains extracted from the Lahtojoki kimberlite pipe (Eastern Finland Kimberlite Province) have been analysed by the ion microprobe NORDSIM for their U- and Pb- isotopic composition.
P. Peltonen, I. Mänttäri
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Svecofennian intra-orogenic gabbroic magmatism: A case study from Turku, southwestern Finland [PDF]
Bulletin of the Geological Society of Finland, 2014 Using single-grain zircon U-Pb dating by LA-MC-ICPMS and whole-rock geochemistry, we have studied the Palaeoproterozoic gabbroic rocks from Moisio in southwest Finland. Three ages were obtained.
J. Nevalainen +4 more
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, 1998 A minimum age of the universe can be estimated directly by determining the age of the oldest objects in the our Galaxy. These objects are the metal-poor stars in the halo of the Milky Way.
Chaboyer, Brian
core +3 more sources
, 2013 Determining the sequence of events in the formation of stars and planetary systems and their time-scales is essential for understanding those processes, yet establishing ages is fundamentally difficult because we lack direct indicators. In this review we
Hillenbrand, Lynne A. +4 more
core +2 more sources
Timing of the Baltic Ice Lake in the eastern Baltic [PDF]
Bulletin of the Geological Society of Finland, 2013 A shoreline database for the Baltic, covering the Late Weichselian and Holocene, was compiled. The database includes about 1600 sites from Estonia, Latvia, Lithuania, Fin- land, NW Russia, Poland, Sweden and was used to create a GIS-based ...
J. Vassiljev, L. Saarse
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