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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 , geology , trace element , splash , mineralogy , analytical chemistry (journal) , fractionation , stable isotope ratio , volatiles , geochemistry , chemistry , environmental chemistry , physics , organic chemistry , quantum mechanics , meteorology
Abstract 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.