APLICATION OF GROUND MAGNETIC METHOD FOR GEOLOGIC STRUCTURE DELINIATION IN FIELD “X” POHUWATO,GORONTALO

• Main Author: Ignas Renard D, Bartholomeus
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/65798
• Institution: Institut Teknologi Bandung

A groundmagnetic survey is a geophysical method that can be used in various ways, such as identifying structures in the form of lineaments below the surface. In the 'X' field, a groundmagnetic survey has been conducted to determine the location and direction of the straightness of a structure located below the surface. Groundmagnetic survey in the 'x' field is carried out on 10 lines with 100 meters distance between the line and 5 meters space between measurement points. The acquired data then goes through a quality control process which is followed by IGRF correction and diurnal correction to produce Total Magnetic Intensity (TMI). TMI is then further processed with the application of a reduce to pole (RTP) filter so that the groundmagnetic survey data can correlate with conditions below the surface. Field "X" is a Low Sulfidation Epithermal area with the structure formed generally filled with quartz minerals with low susceptibility values. Based on the RTP map shows that there are areas with low magnetic anomaly values in the range of 219.8 nT – 272.1 nT which can be assumed as geological structures