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40Ar–39Ar laser dating of tektites from the Cheb Basin (Czech Republic): Evidence for coevality with moldavites and influence of the dating standard on the age of the Ries impact

SYSNO ASEP	0320801
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	40Ar–39Ar laser dating of tektites from the Cheb Basin (Czech Republic): Evidence for coevality with moldavites and influence of the dating standard on the age of the Ries impact
Title	40Ar–39Ar laserové datování tektitů z chebské pánve (Česká republika): Důkaz stejného stáří s vltavíny a vliv standardu na určení stáří riesského impaktu
Author(s)	Di Vincenzo, G. (IT) Skála, Roman (GLU-S)_{RID, SAI, ORCID}
Source Title	Geochimica et Cosmochimica Acta. - : Elsevier - ISSN 0016-7037 Roč. 73, č. 2 (2009), s. 493-513
Number of pages	21 s.
Publication form	WWW - WWW
Language	eng - English
Country	GB - United Kingdom
Keywords	moldavites ; tektites ; Ries crater ; Ar-Ar dating
Subject RIV	DB - Geology ; Mineralogy
R&D Projects	GA205/05/2593 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z30130516 - GLU-S (2005-2011)
UT WOS	000262251300017
EID SCOPUS	57749168617
DOI	10.1016/j.gca.2008.10.002
Annotation	Laser total fusion analysis of milligram to sub-milligram splits of five tektite samples from the Cheb area yielded mostly concordant intrasample Ar-Ar ages of 14.66-14.75 that overlap within errors. These ages match those obtained for samples from western Moravia (14.66 Ma) and southern Bohemia (14.68 Ma), supporting the genetic link between Cheb Basin tektites and moldavites. Laser step-heating experiments were in line with total fusion analyses and yielded well-defined plateau ages of 14.64-14.71 Ma. Based on our data we infer that the age of moldavites is 14.68 Ma.
Workplace	Institute of Geology
Contact	Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272
Year of Publishing	2009

Number of the records: 1