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FRACTAL FEATURES OF FRACTURES IN CHINA AND THEIR IMPLICATION FOR GEOTECTONICS

Tan Kaixua

Abstract

The distribution of deep fractures in the China continental crustobody shows fractal structure features. The fractal dimension value of fractures is 1. 493 for the whole continent and 0. 827~ 1. 624 for different tectonic regions. The fractal dimension value of fractures in mobile regions (especially diwa regions) which is 1. 236 ~ 1. 624 is obviously larger than that in stable regions: platform regions which is 0. 827~ 1. 074, and the fractal dimension value of fractures in the jointregions of crustobodies is obviously larger than that in inner regions of a crustobody. The fractal dimension value of fractures reflects the complexity of regional tectonic evolution, movement history and the intensity of tectonic activity. Therefore, fractal dimension of fractures is a quantitative parameter representing geotectonic characteristics.

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Key concepts: Fractal dimension, Fractal, Tectonics, Geology, Fractal landscape, Dimension (graph theory), Fractal analysis, Seismology