Dataset Information

I-Xe systematics of the impact plume produced chondrules from the CB carbonaceous chondrites: Implications for the half-life value of ¹²⁹I and absolute age normalization of ¹²⁹I-¹²⁹Xe chronometer.

ABSTRACT: It is inferred that magnesian non-porphyritic chondrules in the CB (Bencubbin-type) carbonaceous chondrites formed in an impact generated plume of gas and melt at 4562.49 ± 0.21 Ma (Bollard et al., 2015) and could be suitable for the absolute age normalization of relative chronometers. Here xenon isotopic compositions of neutron irradiated chondrules from the CB chondrites Gujba and Hammadah al Hamra (HH) 237 have been analyzed in an attempt to determine closure time of their I-Xe isotope systematics. One of the HH 237 chondrules, #1, yielded a well-defined I-Xe isochron that corresponds to a closure time of 0.29 ± 0.16 Ma after the Shallowater aubrite standard. Release profiles and diffusion properties of radiogenic ^129*Xe and ^128*Xe, extracted from this chondrule by

SUBMITTER: Pravdivtseva O

PROVIDER: S-EPMC5688312 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

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Dataset Information

I-Xe systematics of the impact plume produced chondrules from the CB carbonaceous chondrites: Implications for the half-life value of ¹²⁹I and absolute age normalization of ¹²⁹I-¹²⁹Xe chronometer.

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Dataset Information

I-Xe systematics of the impact plume produced chondrules from the CB carbonaceous chondrites: Implications for the half-life value of 129I and absolute age normalization of 129I-129Xe chronometer.

OmicsDI is part of the ELIXIR infrastructure

Tweets

I-Xe systematics of the impact plume produced chondrules from the CB carbonaceous chondrites: Implications for the half-life value of ¹²⁹I and absolute age normalization of ¹²⁹I-¹²⁹Xe chronometer.