In:
Science, American Association for the Advancement of Science (AAAS), Vol. 286, No. 5444 ( 1999-11-19), p. 1545-1547
Abstract:
Experimental evidence for a pressure effect on isotopic partitioning at elevated temperatures demonstrates that equilibrium deuterium-protium fractionation between the mineral brucite [Mg(OH) 2 ] and pure water systematically increases by 12.4 per mil as pressure increases from 15 to 800 megapascals at 380°C. A linear relation is observed between the measured fractionation factor and the density of water (0.070 to 1.035 grams per cubic centimeter). The trend of the isotope pressure effect is the same as that of recent theoretical studies, but the magnitude is smaller. The pressure effect must be accounted for in the interpretation of isotopic data of geologic systems involving water (paleotemperature, source of fluids).
Type of Medium:
Online Resource
ISSN:
0036-8075
,
1095-9203
DOI:
10.1126/science.286.5444.1545
Language:
English
Publisher:
American Association for the Advancement of Science (AAAS)
Publication Date:
1999
detail.hit.zdb_id:
128410-1
detail.hit.zdb_id:
2066996-3
detail.hit.zdb_id:
2060783-0
SSG:
11
