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1756754 
Journal Article 
Analysis of onset and development of ore formation in Dajishan tungsten ore area, Jiangxi Province, China 
Liu Ningqiang; Yu Chongwen 
2011 
Yes 
Journal of Earth Science
ISSN: 1674-487X 
22 
1 
67-74 
WOS:000286675000007 
The ""theory of self-similar oscillatory finite-time
singularities"" of Sornette reflects accurately the spatio-temporal evolution and trends of
development of events and processes in complex systems approaching to the singularities, and the
effect of prediction for catastrophic events has been tested to be satisfactory. The authors take
the contents of the chemical element tungsten as the carrier of positive feedback (or activator)
in the ore formation, then try to apply the theory to studying and analyzing the onset and
development of ore formation in the Dajishan (acurrency sign a parts per thousand a +/-+/-)
tungsten ore area, Jiangxi (ae +/- Yeyen) Province, China. The results of the study show that
during the spatio-temporal evolution from outside the ore area to its center, the contents of the
chemical element tungsten and their logarithmic derivatives (local fractal dimension) manifest an
obvious regularity: by way of the process of oscillation and the transition to power-law
accelerating growth, they eventually approach the center of ore formation. The regularity makes
clear that in the complex ore-forming system of the Dajishan tungsten ore deposit, the chemical
element tungsten plays the role of carrier of positive and negative feedback, and by competing
with each other, approaches to singularity in finite time by virtue of self-similar log-periodic
oscillations and succeeded by power-law accelerating growth. In this way the onset of ore
formation is realized. This regularity reflects correctly the dynamic process of ore formation of
the studied ore deposit. The authors hold that Sornette's theory can be further applied to the
prediction of perspective areas. 
Dajishan; ore-forming system complexity; log-periodic oscillations; power-law; discrete scale invariance; singularity; spatio-temporal evolution