STUDY OF THE DISTRIBUTION OF NATURAL COKE (NC) DUE TO SIGNEOUS ROCK INTRUSION BASED ON 2D MODELLING WITH INDICATOR KRIGING GEOSTATISTICS METHOD: CASE STUDY OF SITE B PT XYZ

• Main Author: Gede Surya Pratama Djelantik, I
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/86445
• Institution: Institut Teknologi Bandung

This study aims to analyze the distribution of Natural Coke (NC) resulting from igneous rock intrusions. The modeling is conducted with the indicator kriging geostatistical method using the Geovariances Isatis.neo software as a tools. Kriging is a geostatistical method used to estimate values at unobserved points based on spatial correlations between sample points. This method utilizing a variogram to measure spatial correlation. Indicator kriging is a variant of the Kriging method that is well-suited for categorical variables. A case study was conducted at Site B, PT XYZ. The probability distribution area will be examined for correlations with the geological formations to determine whether the formation of NC in the study area is caused by igneous rock intrusions. The probability of NC and IGN occurrences are noted in the Haloq Sandstone Formation (Teh). This study involves analyzing each geological formation and correlating it with lithological data from exploration drill holes. The conclusion of this study is that igneous rock intrusions influenced the formation of NC, as evidenced by the presence of magma intrusions and volcanic formations around areas with NC probability > 0,5.