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Schaftenaar & Carlson 1984
Schaftenaar, C.H. and Carlson, R.L. (1984). Calcite fabric and acoustic anisotropy in deep-sea carbonates. Journal of Geophysical Research 89: doi: 10.1029/JB089iB01p00503. issn: 0148-0227.

Several investigators have proposed that compressional wave anisotropy in indurated, deep-sea carbonates is caused by a preferred orientation of calcite c axes normal to bedding. To test this hypothesis, we have used X ray pole figure goniometry to measure calcite fabrics in three goniometry to measure calcite fabrics in three anisotropic, calcareous sediment samples from Deep-Sea Drilling Project hole 516F, on the Rio Grande Rise, Anisotropy in these samples ranges from 3.4 to 12.0%. The suggested concentration from 3.4 to 12.0%. The suggested concentration of c axies is present but very weak; concentrations of c axes normal to bedding are in the range 1.1--1.3% per 1% area. We used the Voigt-Ruess-Hill averaging scheme to calculate velocities from the X ray fabric data and found that even in nonporous, pure carbonate rocks, having the observed concentrations of c axes, the acoustic anisotorpy would be less than 1%. We conclude that preferred orientation of calcite is not a significant contributor to compressional wave anisotropy in deep-sea sediments.

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Journal of Geophysical Research
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