Abstract
Based on the research content and conception of dynamics of tectonic ore-forming processes, with the focus on the dynamics and processes of mineral source, ore formation, transport, accumulation, dissipation and mineralization in response to magmatic invasion and metallogenic fluid under tectonic stress, this paper deals with the ore-finding method of fault tectono-geochemistry and its application on the basis of ore deposit genesis, “giant pressure shadow” structure and ore-finding method of tectonic stress field in the Tongchang orefield, expounds the rules of magmatic emplacement and ore fluid migration and concentration under the control of the structural stress field, hence providing the theoretical basis for the localization and prognosis of concealed ores. The fault tectono-geochemical features show that the Cu-Au polymetallic ore deposits (mineralization) in the orefield are closely related with volcano-(exhalation) sedimentation, magmatism and tectono-reworking. Fault tectono-geochemical anomalies can be applied to prognosis of metallogenetic target areas for ore exploration and can provide strong evidence of “giant pressure shadow” structure. In addition, quite a number of important target areas have been defined in combination with the characteristics of the tectonic stress field, and part of the target areas have been proved by practical activities.
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Han, R., Ma, D., Wu, P. et al. Ore-finding method of fault tectono-geochemistry in the Tongchang Cu-Au polymetallic orefield, Shaanxi, China: I. Dynamics of tectonic ore-forming processes and prognosis of concealed ores. Chin. J. Geochem. 28, 397–404 (2009). https://doi.org/10.1007/s11631-009-0397-y
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DOI: https://doi.org/10.1007/s11631-009-0397-y