1. O. A. Pfiffner and J. G. Ramsay J. Geophys. Res. 87 B1 311 (1982).
2. Schmid S. M., Eclogae Geol. Helv. 68, 247 (1975).
3. W. Müller N. Mancktelow M. Meier Earth Planet. Sci. Lett. in press. Only a brief summary is given emphasizing the modifications necessary because of the peculiar sample mineralogy. After cutting the fiber increments with a microscope-mounted microdrill subsequent cleaning and weighing the quartz + chlorite microsamples were leached twice to ensure separation of silicates from residual carbonates with 500 μl of ∼8 M acetic acid in an ultrasonic bath (∼10 min) and on a warm hotplate (∼15 min) with a 500-μl rinse of water in between. Subsequently the sample was leached with warm 2.5 M HCl for ∼5 min followed by another rinse with 500 μl of water. All leachates and rinses were collected and analyzed; they contained ≤6‰ of Sr that previously resided in the silicates. After addition of a 84 Sr- 85 Rb tracer the silicate samples were dissolved in closed fluorinated ethylene propylene (FEP) vials at ∼80°C with 400 μl of concentrated HF and 10 μl of concentrated HNO 3 (3 days) and equilibrated with 400 μl of 6M HCl overnight. The solutions were scrutinized with a binocular microscope and found to be free of undissolved particles or precipitates. Carbonate samples were dissolved with 500 μl of ∼8 M acetic acid. All sample weights of PFC-2 and the silicate sample weights of PFC-1 are given according to the estimated modal abundances deduced from thick section. Measured values for the SRM987 Sr standard were 0.710292 ± 13 (1σ; static mode Faraday; 10 to 100 ng of Sr; n = 23).
4. J. G. Ramsay and M. I. Huber The Techniques of Modern Structural Geology vol. 1 Strain Analysis (Academic Press London 1983).
5. Dietrich D., Tectonophysics 170, 183 (1989).