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Microsymposium 38, MS015, 2003 (letter format)

MARS: MOVEMENT OF GEOGRAPHICAL POLES AND DEFORMATION OF ITS SURFACE. A.V. Dolitsky 1, J. F. Rodionova 2, R M. Kochetkov 3, A. F. Ainetdinova 2 1 - United Institute of Physics of the Earth of Russian Academy of Sciences .Moscow. ab4870@mail.sitek.ru 2 ­ Sternberg State Astronomical Institute, Moscow. jeanna@sai.msu.ru. 3 Moscow Technical University of communication and information, krmkrm@rol.ru A hypothesis about the movement of geographical poles of the Earth were discussed in [1, 2]. The global analysis of the Earth linear structure elements has allowed to define the position of geographical poles in the different geochronological periods [3, 4]. It is known that there are some regions in the equatorial band of Mars looks like the permanent polar caps. For example such layered deposits are in the region 4° south latitude and 156° west latitude. [5]. In this paper trajectories of seeming movement of geographical poles of Mars (at constant position of its geographical axis) are established. It is the curves that unite sequences of geographical poles - poles of symmetry of faults in the global stress field fixed by faults on a surface of the mantle during its rotation around of the core. Positions of poles on spirals of trajectories testify to discontinuous rotation of the mantle. For discovering these poles were made a databank of faults of Mars and were analyzed them positions. A databank of faults of Mars was done on the base of Tectonical Map of Mars [6] by Dr. J.F.Rodionova (SAI of MSU) and A.F.Ainetdinova (student of MSU); the computer program was made by Dr. A.V.Dolitsky (UIPhE RAS) and Dr. R.M.Kochetkov (MTUI), by latter was done the analysis of the data. Trajectories of movement of north and south geographical poles are consisted of four spirals having amplitudes 110°, 100°, 80° and 70°. Trajectories are symmetric to a recent geographical axis and are in ranges of latitudes +/-15-50°. Many separate poles are found in higher latitudes. To discover the age of sequences of these poles and their correlation with the recent geographical poles the computer program will be broadened. But already now it is possible to assert, that the movement of poles of Mars and magnetic field are the effect of the rotation its mantle over the core. At present time the rotation of mantle have terminated. The certificate of it is a distinction between position of spirals of movements of poles of the past and recent poles which serve for them as poles of symmetry J.F.Rodionova and A.F.Ainetdinova, using A.V.Dolitsky's method, have established 18 structures, that are directed to equator correlated to the time of their formation. It has allowed to define relative age of structures according to the position of geographical poles. They were found as the points of crossing of bisectors of corners of structures(U-shaped) with spirals of trajectories. All structures of detected age do not contradict a principle "Young structures bridge over ancient structures". Orientation of structures(U-shaped) direct to equator testify that their formation is under the action of centrifugal forces of rotation of a planet. The influence of these forces is depend upon their sizes, latitude position and amplitudes of raising of the surface of planet in that region. The sizes of structures(Ushaped) and amplitudes of their raising is also depended on power of centrifugal forces. The raising begins with warming up of the planet's crust by magma, penetrated in it through faults, but not extending on this surface of planet. Conclusions. In the history of Mars there are three stage of its development: 1) the stage of formation of planet; 2) a stage of its warming up followed by (a) rotation the mantle over the core, (b) generation a magnetic field of planet, (c) regional structure(U-shaped)-building under action of centrifugal forces of rotation of a planet, 3) a stage of cooling of planet and


2 termination of rotation of the mantle over the core; at this stage the magnetic field disappears. Dd - the fourth spiral), last figure - a serial number of a geographical pole on a spiral of a trajectory. References: Table Geographical poles and regional structures (U-shaped) of the same time Geograf.poles Structures [1] Takeuchi H.,Uyeda S., Kanamori H. (1967) Debate about the Earth. San Francisco. 248 p. [2] Runcorn S.K. (1955) Rock MagnetizmGeophysical Aspects. Phil. Mag. Suppl. 4 [3] Dolitskiy A.V. (1985) Obrazovanie iI perestrojka tectonicheskih structur. 219 p. [4] Dolitsky A.V. (2000) Rotation of the mantle over the core: movemrnt of geographical and geomagytic poles, periodicity of geological and tectonic processes.- M.: UIPE RAS,. 40 p., ISBN 5201-11910-7 [5] Ksanfomaliti L. V. (1997) Parad Planet. Nauka. Moscow, p.117-120. [6] Makarova N.V. et al. (1981) Tektonicheskaya karta Marsa. 1:20 000 000, Moscow University.

Index Long. Lat. Index Long. Lat 1_0 60 w., 10 n. 1_0 37 w., 7 s. 1_1 59 w., 11 n. 1_1 73 w., 20 n. 1_2 68 w., 10 n. 1_2 68 w., 27 2_0 240 w., 10 s. 2_0 320 w., 45 s. n. 2_6 258 w., 35 s. 2_6 258 w., 43 s. 2_3 235 w., 10 s. 2_3 235 w., 36 s. 1_0 170 w., 13 n 1b0 124 w., 18 n. 1_3 166 w., 01 n. 1b3 166 w., 42 1_6 198 w., 47 n. 1b6 198 w., 23 n. n. 2_6 40 w., 52 s. 2b6 45 w., 42 s 1_0 272 w., 23 n. 1c0 276 w., 04 n. 1_3 272 w., 15 n. 1c3 287 w., 08 s. 2_0 92 w., 23 s 2c0 108 w., 09 s. 2_1 88 w., 22 s 2c1 60 w., 15 s. 2_3 97 w., 17 s. 2c3 57 w., 25 s. 1D0 347 w., 11 n. 1d0 12 w., 18 s. 1D3 354 w., 03 n. 1d3 16 w., 08 s. 1D2 357 w., 13 n. 1d2 29 w., 17 n.

Indexes of geographical poles and structures (U-shaped) of the same time The first figure (1 - North Pole, 2 - South Pole), the letter, header at a designation of a pole and lower case at a designation of the structure connected to it (__ - the first spiral, Bb - the second spiral, Cc - the third spiral,