TY - JOUR
T1 - Search for p-isotopic anomaly of cerium in the bulk Allende meteorite
AU - Makishima, Akio
AU - Masuda, Akimasa
N1 - Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 1994
Y1 - 1994
N2 - LREE (La, Ce, Nd and Sm) concentrations, and 143Nd/144Nd and 138Ce/142Ce ratios of two powder aliquots from the bulk Allende meteorite (BAM) were measured to investigate p-isotopic anomalies of Ce. Initial Ce isotope ratios of the two aliquots were calculated assuming an age of 4.56 Ga, identical with ages of other chondrites or eucrites. From the data, we conclude that there are no recognizable p-isotopic anomalies in BAM. This suggests that the existence of p-isotopic anomalies of other REE in BAM is unlikely. Our data can not, however, rule out the possibility that this is only caused by averaging of heterogeneous distribution of p-isotopic anomalies.
AB - LREE (La, Ce, Nd and Sm) concentrations, and 143Nd/144Nd and 138Ce/142Ce ratios of two powder aliquots from the bulk Allende meteorite (BAM) were measured to investigate p-isotopic anomalies of Ce. Initial Ce isotope ratios of the two aliquots were calculated assuming an age of 4.56 Ga, identical with ages of other chondrites or eucrites. From the data, we conclude that there are no recognizable p-isotopic anomalies in BAM. This suggests that the existence of p-isotopic anomalies of other REE in BAM is unlikely. Our data can not, however, rule out the possibility that this is only caused by averaging of heterogeneous distribution of p-isotopic anomalies.
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U2 - 10.2343/geochemj.28.115
DO - 10.2343/geochemj.28.115
M3 - Article
AN - SCOPUS:0028565490
VL - 28
SP - 115
EP - 122
JO - Geochemical Journal
JF - Geochemical Journal
SN - 0016-7002
IS - 2
ER -