The Astronomical Journal, 2023 The absolute age of a simple stellar population is of fundamental interest for a wide range of applications but is difficult to measure in practice, as it requires an understanding of the uncertainties in a variety of stellar evolution processes as well ...
Jiaqi (Martin) Ying +5 more
doaj +3 more sources
Absolute Age of Euxenite from Antarctica
Antarctic Record, 1961 南極地方Lutzow-Holm Bayの東海岸,Skallen地区に見出された花崗岩ペグマタイト中の強放射性鉱物,ユークセン石の年令決定を鉛法により行ない,Pb-206/U-238,Pb-207/U-235,Pb-208/Th-232,Pb-207/Pb-206の比を測定することによって年令を算出した.従来,しばしば異常な値を示すと考えられているPb-208/Th-232の比を除けは,他の三つの比から得られる年令は相当によい一致を示し,平均約470×10^5年程度である.最近AHRENSらは著者の一人 ...
Nobufusa SAITO +2 more
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Tephrochronology and Absolute Age Determination
The Quaternary Research (Daiyonki-Kenkyu), 1967 Most tephrochronological studies based upon absolute ages are derived from historical records of eruption and radiocarbon dates from Holocene and Pleistocene times. However, unless associated with some organic matters whose ages are younger than 35, 000 years old, tephra layers usually could not be dated.Recently Kigoshi explored the possibility that ...
Kunio Kobayashi
openaire +3 more sources
Poor Concordance of One-Third Anterior-Posterior Chest Diameter Measurements With Absolute Age-Specific Chest Compression Depth Targets in Pediatric Cardiac Arrest Patients. [PDF]
J Am Heart Assoc, 2023 Ong GY +9 more
europepmc +3 more sources
Informatics in Medicine Unlocked, 2023 Background: Combined polypharmacy treatments of multi-diseases like diabetes mellitus type 2 (DMT2) with its comorbidities could lead to serious adverse reactions (ADR) due to drug-drug interactions (DDIs).
Adnan Kulenovic +1 more
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Stratigraphical evidence of Baltic water level changes between 8 and 6 ka BP in a small lake basin on the coast of the Gulf of Finland, SE Finland [PDF]
Bulletin of the Geological Society of Finland, 1997 A sediment core from Lake Saarasjärvi at 19.5 m a.s.l. in Virolahti near the coast of the Gulf of Finland, SE Finland, was studied for lithology and diatom stratigraphy.
A. Miettinen, H. Hyvärinen
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Quaternary chronostratigraphy - a review [PDF]
Bulletin of the Geological Society of Finland, 1992 Quaternary development is characterized by strong climatic fluctuations associated with repeated glacier expansions. Consequently the Quaternary chronostratigraphy is largely based on the dating of climatic fluctuations which have led to large-scale ...
M. Eronen
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1.90-1.88 Ga arc and back-arc basin in the Orijärvi area, SW Finland [PDF]
Bulletin of the Geological Society of Finland, 2002 The Orijärvi area within the Uusimaa Belt is a key area in resolving the stratigraphy and tectonic setting of the Southern Svecofennian Arc Complex in southern Finland.
M. Väisänen, I. Mänttäri
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Geochronology of the Suomenniemi rapakivi granite complex revisited: Implications of point-specific errors on zircon U-Pb and refined λ87 on whole-rock Rb-Sr [PDF]
Bulletin of the Geological Society of Finland, 2015 Multi-grain isotope dilution and secondary ion microprobe zircon U-Pb as well as wholerock Rb-Sr isotope dilution data on the late Paleoproterozoic Suomenniemi rapakivi granite complex (exposed on the northern flank of the Wiborg batholith in ...
O.T. Rämö, I. Mänttäri
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Pre-1.91 Ga deformation and metamorphism in the Palaeoproterozoic Vammala Migmatite Belt, southern Finland, and implications for Svecofennian tectonics [PDF]
Bulletin of the Geological Society of Finland, 2004 A metamorphic event in the Vammala Migmatite Belt (VMB) at ~1.92 Ga, revealed by SHRIMP U-Pb analyses of both zircon overgrowths and monazite, is interpreted as post-depositional and is correlated with the development of the early high-grade schistosity.
R.W.R. Rutland +2 more
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