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| Titel: |
Contrast in the isotopic composition of oxygen and carbon between the Mud Tank Carbonatite and the marbles in the granulite terrane of the Strangways Range, central Australia |
| Auteur: |
Wilson, Allan F. |
| Verschenen in: |
Australian journal of earth sciences |
| Paginering: | Jaargang 26 (1979) nr. 1-2 pagina's 39-44 |
| Jaar: |
1979 |
| Inhoud: |
Three samples from the Mud Tank Carbonatite have very similar isotopic ratios, averaging δ13C=-4.3 and δ18O=+7.5(SMOW). These isotope values are distinct from those of nearby highly metamorphosed Carpentarian marbles, which have marine limestone values of δ13C=-1.3±0.5, and δ18O=+17.6+0.7 with n=11. Minor variations in the values for the normal marbles show no correlation with stratigraphy or geographic location; however, somewhat lighter oxygen is found in some other marbles known to be affected by low-temperature fluids within the Woolanga Lineament. Isotopes of C and O, if discretely used in conjunction with other geochemical features, not only may discriminate between deep-seated carbona-tites and marbles, but may also help to identify zones of carbonate metasomatism and define the isotopic characters of the fluids. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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