Short-lived oxygen diffusion during hot, deep-seated meteoric alteration of anorthosite

Science

Volumn 286, Issue 5448, 1999, Pages 2323-2325

  Mora, Claudia I ^a   Riciputi, Lee R ^b   Cole, David R ^b  

^a UNIVERSITY OF TENNESSEE   (United States)

^b OAK RIDGE NATIONAL LABORATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

MINERAL; OXYGEN 18; WATER;

ANORTHOSITE; DIFFUSION; ISOTOPIC COMPOSITION; METEORIC WATER; OXYGEN; PLAGIOCLASE;

ARTICLE; DIFFUSION; HIGH TEMPERATURE; METEOROLOGICAL PHENOMENA; PERMEABILITY; PRIORITY JOURNAL; ROCK; WATER LOSS; WATER TRANSPORT;

EID: 0033579360     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.286.5448.2323     Document Type: Article

References (30)

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15. 16O standard) - 1)1000 per mil relative to the V-SMOW standard. In situ oxygen isotope analyses were obtained on a Cameca ims 4f SIMS using a low-energy electron gun for sample charge compensation, extreme energy filtering, and instrument conditions [L R. Riciputi, B. A. Patterson, R. L Ripperdan, Int. J. Mass Spectrom. Ion Processes 178, 81(1998)]. SIMS results have external reproducibility of 0.6 to 1 per mil (1Δ) for a spot diameter of ∼30 μm.
16. 16O standard) - 1)1000 per mil relative to the V-SMOW standard. In situ oxygen isotope analyses were obtained on a Cameca ims 4f SIMS using a low-energy electron gun for sample charge compensation, extreme energy filtering, and instrument conditions [L R. Riciputi, B. A. Patterson, R. L Ripperdan, Int. J. Mass Spectrom. Ion Processes 178, 81(1998)]. SIMS results have external reproducibility of 0.6 to 1 per mil (1Δ) for a spot diameter of ∼30 μm.
17. 18O in the range +5 to -8 per mil.
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21. -1. The initial plagioclase composition was taken to be +5 per mil, with fluid compositions of -11 per mil (Fig. 2, top) or -16 per mil (Fig. 2, bottom), and a water:rock ratio = 10 (by weight).
22. -1. The initial plagioclase composition was taken to be +5 per mil, with fluid compositions of -11 per mil (Fig. 2, top) or -16 per mil (Fig. 2, bottom), and a water:rock ratio = 10 (by weight).
23. -1. The initial plagioclase composition was taken to be +5 per mil, with fluid compositions of -11 per mil (Fig. 2, top) or -16 per mil (Fig. 2, bottom), and a water:rock ratio = 10 (by weight).
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28. The rapid loss of grain boundary fluid followed by dry cooling has also been inferred in metacarbonate rocks [C. M. Graham, J. W. Valley, J. M. Eiler, H. Wada, Contrib. Mineral. Petrol. 132, 371 (1998)].
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30. Supported by NSF grant EAR-8922638 and an Oak Ridge Associated Universities Faculty Participation Program Fellowship to C.I.M., NSF grant EAR-9706077 to L.R.R., and the Office of Science, Basic Energy Sciences, U.S. Department of Energy under contract DE-ACO5-96OR22464 with Oak Ridge National Laboratory, which is managed by Lockheed Martin Energy Research Corporation.