BSE Applied To Distinguish Geochemical Anomaly From Background

For years, definite the lower limit of geochemical anomaly is the basic problem of exploration Geo-chemistry, people are always find a new way to definite the lower limit of geochemical anomaly which not only can embodiment the distributed characteristic of the geochemical but also fast and accurate. The anomaly gradient change is important of anomaly research,because by means of it can get some anomaly areas which intensity are different. In the west of our country where physiognomy is complex, how to find a fast and accurate way to definite the geochemical anomaly is very significant to geochemical prospect efficiency. While, through a new efficiency method can break down big and decrease anomaly area.The traditional method to definite geochemical anomaly must eliminate extra- high-grade,but this method effect the veracity and objectivity of the result. When BSE to process chemical prospecting data, not only need to eliminate extra- high-grade but also can to avoid some anomalies are value. The BSE combine with fractal content-grads methods can more accurate to enclose the geochemical focus.Apply this new method to deal with the data from hydrographic deposits in Tibet jiama area, for the example of Cu and definite the anomaly of Cu. Apply fractal interpolation theory have drew fractal interpolation curved surface chart and enclosed the anomaly viscosity focus. The shape of the demarcated synthesized anomaly is clear, and the intension of the anomaly is large.From the effect of applied, the scale, which was marked out by this method, is impersonality and comprehensive reflecting jiama mineral area and have relation with the copper-polymetal deposits. By this token, the method BSE combine with fractal content-grads is practical and effective, which is recommendable in the work of marking geochemistry anomaly.