Instability of layered media under gravity stress |
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| Institution: | 1. Department of Physics University of Azad Jammu & Kashmir Muzaffarbad, 13100, Azad Kashmir, Pakistan;2. Health Physics Division, Pakistan Institute of Nuclear Science & Engineering (PINSTECH), Nilore, Islamabad, 45650, Pakistan;3. Department of Medical Physics, Nuclear Medicine, Oncology and Radiotherapy Institute (NORI), Islamabad, Pakistan;4. Department of Physics, Gomal University, Dera Ismail Khan, Pakistan;5. Directorate of Systems & Services, PINSTECH, P.O. Nilore, Islamabad, Pakistan;1. A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia;2. Siberian Research Institute of Geology, Geophysics, and Mineral Resources, Krasnyi pr. 67, Novosibirsk, 630091, Russia;1. Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, ul. Bol’shaya Gruzinskaya 10, Moscow, 123995, Russia;2. Moscow State University, named after M.V. Lomonosov, Faculty of Geology, Moscow, Russia;3. Department of Geological and Environmental Sciences, Stanford University, United States;1. A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia;2. Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia |
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| Abstract: | It is proposed to consider data both on the deep density distribution (gravity instability) and the bulk modulus of elasticity on estimation of the stability of layered mountain ranges. It is shown that an increase in bulk elastic rigidity with depth is the stable state of layered media in terms of energy in the field of gravity stress. In the tectonosphere, in which the moduli of elasticity are inverted (decrease) with depth, excess energy of elastic strain of volume change is generated by body forces, and it will determine the instability of the geologic medium. |
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