Geostatistics analysis as a tool to create the distribution model of Rawa Danau volcano deposits, Banten Province

Abstract

Abstract The eruption of an ancient volcano at the early Pleistocene had deposited volcanic material evenly, especially in the western part of Rawa Danau. Many smaller mountains emerged around Rawa Danau volcano as the Pleistocene volcano erupted. Then, at the end of the Pleistocene, the ancient volcano erupted for the second time with a very large force that destroyed most of the mountain and created a caldera. The volcanic material from the second eruption was distributed to evenly around the ancient volcano. We used geostatistical analysis with Inverse Distance Weighted (IDW) method to interpolate the spreading of volcanic deposits both in the first and second eruption. The objective of this research is to predict the volcanic deposits in the area which has not been researched yet and it is possible to have more eruptions in the future since geothermal manifestations such as hot springs are found in the research area. We used the outcrop data from geological mapping to interpolate the data. The output of this paper would be the interpolation map of facies deposits in Rawa Danau.