Jinchang- LaoHeiShan Region Tectonic Stress Field In Heilongjiang Province And The Fractal Characteristics Of The Study

Jinchang- LaoHeiShan area is mainly located in the east county of heilongjiang province, are constructed and the circum-pacific tectonic transition GuYa Zhou composite parts.Belong to taiping mountain uplift and LaoHeiShan fault transition area.Research area structure effect significantly, appeared a large and small circular structure, as well as the associated radial fracture, the role of the structure and the magma formed the Mesozoic good metallogenic environment.Paper by collecting, analyzing data of predecessors’ work, and study the structure of the area to area have a whole understanding, on this basis, the first interpretation of remote sensing images, according to the interpretation methods, the annular structure in the study area, fracture and concludes that the entire study area tectonic situation more complex ring structure development, NE as the main fracture direction, at the same time accompanied by NW and EW to fracture, etc.The second shear joint data for statistical analysis of the field collection.Observations in the field joint measurement point 12, 549, measuring joint occurrence indoor make rose diagram, pole density diagram, diagram of principal stress axes maps are 38, detailed analysis of three working zone of the main structure, secondary structure and direction of tectonic stress field, obtained nearly SN direction to the south alluvial gold groove workspace stress field;The worse the workspace because the ring structure, the stress field direction without obvious orientation;For the NE-SW LaoHeiShan workspace stress field direction.According to the structure of the study area wear and cutting conditions, magmatic rock mass distribution and stratigraphic age characteristics determine the structure of the three working zone activity time sequence, south alluvial gold groove workspace tectonic movement period after variscan movement, indosinian movement before;The worse the workspace tectonic movement era to the late yanshan movement;Lao HeiShan workspace for neogene tectonic movement era.Through the study of fractal dimension in the study area provide theoretical support for further prospecting.According to the capacity dimension calculation methods of fractal theory, divided into 10~1 km within the geological map of six dimensions of the lattice, and then to have a structure for statistical phenomenon on the number of squares, calculate the study zone of fractal dimension is 1.53272.Then use the same method, with reference to the mining area(or points) ore-controlling tectonic feature selection suitable area size measurement gold factory, nine ditch Buddha four mining area(point) of the fractal dimension.Measured the south ditch placer gold mineralization vision distinguish between the fractal dimension is: 1.27606.Was Yang polymetallic point of fractal dimension is: 1.0708.Nine Buddha ditch mines fractal dimension as follows: 1.63047;Gold mines distinguish between the fractal dimension is 1.64983.From the perspective of ore-forming and ore-controlling, fractal dimension of high regional mineralization possibility is very large, such as gold factory, nine Buddha ditch mines mining area.Through statistical structure, rock mass characteristics of typical mining area, choose the research of the typical area in the measurement of fractal dimension, and mining area, such as gold factory(or points) the fractal dimension of contrast, finally determine the three ridge, large forest farm, such as river three the next phase of work area, determining the prospecting direction of the future.