Surplus Space Method: A New Numerical Model for Prediction of Shallow-seated Magmatic Bodies |
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Authors: | DENG Jun HUANG Dinghu WANG Qingfei WAN Li YAO Lingqing GAO Bangfei Liu Yan Key Laboratory of Lithospheric Tectonics Exploration |
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Abstract: | Based on the data of field measurement and drilling in the Tongling area, a series of numerical simulations are carried out by using the "Surplus Space Method" (SSM), which is first put forward in this paper and applied to predict the shallow-seated magmatic bodies. The results of the numerical simulations show the existence and the 3-D shape of a conical magmatic structure at a depth of-1000 m beneath the center of the area: its top offsets southwards and bifurcates to several branches, while its lower part stretches northeastwards and contracts rapidly to a point at about -1000 m depth. This point is reckoned to be a "sink" of magma system, transferring ore materials and heat energy from the deep magma chamber to the sub-surface apophyses. The preliminary application of the SSM proves that it may be developed as a new detection means for determining the existence of shallow-seated magmatic bodies and analyzing their three-dimensional features. |
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Keywords: | Tongling area shallow-seated magmatic bodies surplus space method numerical simulation |
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