断裂带的动力分异和化合

DYNAMIC DIFFERENTIATION AND ASSOCIATION OF CHEMICAL ELEMENTS IN FAULT ZONES

Chemical compositional changes in fault zones are dealt with in this paper from a dynamic point of view. In fault zones consisted of silicates, relative accumulation of Si and Fe is noticed in response to the leaching of K, Na, and to a lesser extent, Mg,Ca and Ah The order of pctrogenetic elements from stable to mobile is tentatively suggested as follows: Si, Fe, Mg, Ca, Al, K and Na. The difference in ionic radius of these chemical elements is thought; to be the major factor controlling this dynamic differentiation. For fault zones along which one side is silicates and the other is carbonates, new mincrals are recognized in tectonite. On the silicate side Ca and Mg increase but Si and Al decrease; and the reverse is true on the carbonate side. This phenomenon indicates that the migration of elements in fault; zones is accelerated by dynamic cffect.

Chemical compositional changes in fault zones are dealt with in this paper from adynamic point of view. In fault zones consisted of silicates, relative accumulation of Siand Fe is noticed in response to the leaching of K, Na, and to a lesser extent, Mg,Ca and Al. The order of petrogenetic elements from stable to mobile is tentativelysuggested as follows: Si, Fe, Mg, Ca, Al, K and Na. The difference in ionic radiusof these chemical elements is thought to be the major factor controlling this dynamic dif-ferentiation. For fault zones along which one side is silicates and the other is carbona-tes, new minerals are recognized in tectonite. On the silicate side Ca and Mg increasebut Si and Al decrease; and the reverse is true on the carbonate side. This pheno-menon indicates that the migration of elements in fault zones is accelerated by dynamiceffect.