Standardization of SIMS Analysis of O and C Isotope Ratios in Carbonates from ALH84001
Abstract
Previous bulk analyses of carbonate in the SNC meteorite ALH84001 have demonstrated ranges of 10's of permil in both C and O isotope ratios. The authors have attempted to constrain the source of these variations by ion microprobe analysis of the O-18/O-16 and C-13/C-12 ratios in the 20-30 micron diameter spots of the carbonate and coexisting silicate phases. The methods and standardization of the analysis of carbonates are described here.
- Publication:
-
Lunar and Planetary Science Conference
- Pub Date:
- March 1997
- Bibcode:
- 1997LPI....28..327E
- Keywords:
-
- Snc Meteorites;
- Carbonates;
- Oxygen Isotopes;
- Carbon Isotopes;
- Meteoritic Composition;
- Standardization;
- Ion Probes;
- Microanalysis;
- Lunar and Planetary Exploration;
- CARBONATES;
- ION MICROPROBE;
- ISOTOPES: STABLE;
- METEORITES: SNC