Physics
Scientific paper
Sep 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999e%26psl.171..607f&link_type=abstract
Earth and Planetary Science Letters, Volume 171, Issue 4, p. 607-621.
Physics
7
Scientific paper
Slow graphite carbon self-diffusion rates and a strong dependence of 13C/12C fractionations on fluid chemistry can be combined with secondary ion mass spectrometry (SIMS) analyses of 13C/12C of graphite to fingerprint graphite precipitation mechanisms and carbon chemistry of crustal fluids. The δ13C variations in single graphite grains in granulite facies rocks from Ponmudi, South India approach 10‰ and are interpreted to reflect three distinct generations of graphite formation and fluid infiltration, illustrating the potential of SIMS microdomain graphite analyses for deciphering crustal fluid influx histories. Our analyses provide insight into a longstanding debate in crustal metamorphism of South India, indicating that the fluid-rock interaction history included early, middle, and late interactions with C-O-H fluids.
Farquhar James
Hauri Erik
Wang Jeffrey
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