1 INTRODUCTION

2 ESTIMATOR OF AZIMUTHAL VELOCITY

3 APPLICATION TO LARGE SPECTROSCOPIC SURVEYS

4 [α/Fe] VS RG AND vφ PLOTS FOR THE STARS IN THE CARDINAL DIRECTIONS

5 CONSTRAINTS ON THE FORMATION OF THE THICK DISC

6 PUTTING CONSTRAINTS ON THE EVOLUTION OF THE THIN DISC AND ON CHURNING

7 CONCLUSIONS