| Benxi-Ji’an area is to adjust China bureau identified19one of the importantmetallogenic zone of the country’s part of liaodong-JiNa metallogenic belt. The areaacross the two tectonic units, one is the archean continental nuclei, is composed ofarchean metamorphic rocks, its ore-controlling role obviously, is an important ore inthis area, the main minerals are iron, copper (zinc), gold, pyrite, etc.; Second,proterozoic alternating ancient rift zone, which is very rich in mineral resources, suchas magnesite, talc, lead and zinc, boron, cobalt, iron, gold, uranium, etc to form manyor large or superlarge deposit. So find out alternating ancient rift for3D geologicalstructure of concealed ore bodies and the alternating ancient rift evolution mode is ofgreat significance.At first, this paper analyzed the regional geological and geophysicalcharacteristics, and then designed and completed the article11a comprehensivegeophysical profile and related property acquisition work, through the statistics andanalysis of samples density, magnetic susceptibility and resistivity three physicalproperty data, and further to various comprehensive geophysical profile data jointinversion processing and cross gradient, combined with the geological andgeophysical data and physical property data, for the integrated geological andgeophysical interpretation of each section, obtained the following conclusions:1,section on various geophysical structure unit and the division of tectonic units of thesurface, regional trunk in the section on the basic performance of fracture density,electrical gradient belt and magnetic interface. Longgang plot main show is "threehighs" geophysical characteristics, namely the bouguer gravity anomaly value is high,high magnetic and high resistivity values. Liao of the rift in liaohe group of maingeophysical characteristics of high-density, low magnetic or nonmagnetic and lowresistivity. Alternating granite mainly for medium density, magnetic slightly, mediumresistivity, while the Mesozoic rock mass mainly as low density, high magnetic or nonmagnetic, high resistivity.2, the main geophysical characteristics of the trunkfracture dense gradient belt;3, with integrated geophysical methods set longgang plotand alternating ancient northern rift boundary problem, namely, two geological unitswithin the scope of the study area from west to east in grass river fault zone,Lianshanguan Turkey stone in the south–the magmatic rock of Balidianzi country-HuanRen County In Hongmiaozi countryside a line for the border;4, preliminarybuild the main formation in the study area,3Dgeological structure model of rockmass. |
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