Triple oxygen isotope composition of Australasian tektites | Zendy

Žák Karel | Zendy; Skála Roman | Zendy; Pack Andreas | Zendy; Ackerman Lukáš | Zendy; Křížová Šárka | Zendy

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Triple oxygen isotope composition of Australasian tektites

Author(s) -

Žák Karel,

Skála Roman,

Pack Andreas,

Ackerman Lukáš,

Křížová Šárka

Publication year - 2019

Publication title -

meteoritics and planetary science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.09

H-Index - 100

eISSN - 1945-5100

pISSN - 1086-9379

DOI - 10.1111/maps.13251

Subject(s) - isotopes of oxygen , isotope , splash , fractionation , trace element , analytical chemistry (journal) , mineralogy , geology , oxygen , stable isotope ratio , chemistry , geochemistry , environmental chemistry , physics , organic chemistry , quantum mechanics , meteorology

Major and trace element analyses and triple oxygen isotope measurements were performed on 11 individual specimens of Australasian tektites ( AAT ) with exactly known field positions from Laos. The sample set was dominated by Muong Nong‐type tektites ( MNAAT ), including separated layers of glass of different appearance and chemistry from four samples. This first larger set of oxygen isotope data of MNAAT revealed the δ 18 O range 8.7 ≤ δ 18 O ≤ 11.6‰ on VSMOW 2 scale (12 analyses), only slightly wider than the previously reported range for splash‐form AAT . The Δ’ 17 O values of MNAAT (−0.098 ≤ Δ’ 17 O ≤ −0.069‰; 12 analyses) and splash‐form AAT (−0.080 ≤ Δ’ 17 O ≤ −0.068‰; three analyses) are all in the range of data typical for terrestrial crustal rocks, with no mass‐independent oxygen isotope fractionation (from impactor or from exchange with atmospheric O 2 ) being observed.

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