A potential field geophysical study to image a Potash resource throughDepth from Extreme Points, Ghareh-Aghaj deposit in NW of Iran

Based on magnetic susceptibility and gravity models, the final purpose of analyzing potential field data is to estimate the parameters of the researched source, such as depth, structural index, horizontal location, and physical characteristics. Meanwhile, when conducting geophysical explorations, it is critical to ascertain the exact depth of the spring as soon as possible. In this essay, the potential field is interpreted using the DEXP automatic transformation technique, founded on the accurate processing of the local wavenumber at various scales and the extreme points of the DEXP field to extract the depth, horizontal position and structural index of spring anomalies. This highly stable method demonstrates low sensitivity to noise-contaminated data since it employs an upward continuation filter and a potential field derivative operator. In addition, the findings are more dependable than those of alternative techniques. Furthermore, the procedure is entirely automatic and does not require any basic information from the data collection area. In other words, DEXP can be considered a fast imaging method. Since multiscale methods are less reliant on the magnetic induction field, nowadays, they are utilized more frequently in magnetic field computations. At the beginning of this research project, a basic model was produced with a minimum resolution of the spring distribution. After that, the depth extension of the postulated model was demonstrated by implementing the DEXP technique to the synthetic gravity and magnetic data. Subsequently, this method has been implemented on data from the Ghareh-Aghaj potash exploratory area in Zanjan Province, North of Iran. By summarizing this method's results, it can be seen that the potash mass exhibits a minimal transverse expansion and has extended more in the depth dimension. Compared to the findings obtained via exploratory boreholes, these findings demonstrate a level of agreement that can be considered satisfactory.

کلیدواژه ها:

automatic DEXP transformation ، multiscale methods ، Potential field ، depths estimate