PALEOMAGNETISM OF A PERMIAN TRIASSIC SEQUENCE IN MANGISLAK (KAZAKHSTAN, CIS)/

During the palaeomagnetic study of an Upper Permian-Lower Triassic (In duan) continuous sequence from the Mangislak area in western Kazakhsta n (44 degrees N 52 degrees E), the thermal demagnetization of the samp les has shown two main components of NRM. The first component (A) is c learly post-folding (D = 12 degrees, I = 64 degrees, alpha(95) = 7 deg rees). The second component (B) has higher unblocking temperatures. It is a prefolding, either normal or reversed, component (D = 12 degrees , I = 31 degrees, alpha(95) = 7 degrees, VGP: 61 degrees N 206 degrees E). The magnetostratigraphy distinguishes two short normal periods be tween three longer reversed ones, which suggests a possible location o f the P/T boundary near the base of the section. The palaeolatitude de duced from the inclination favours the hypothesis of shortening of the Turan plate during the Kimmerian tectonics.