The geodiversity site of Sentono Gentong in Pacitan, Indonesia: Geological characteristics and quantitative assessment

Abstract

This paper aims to identify the geological properties of Sentono Gentong and provide a quantitative assessment of its geodiversity site in Pacitan Regency, Indonesia.This area is an integral part of the vast Gunung Sewu UNESCO Global Geopark. Rock samples and site conditions are compiled on field study. The study area consists mainly of Neogene limestone and older igneous rock. Microscopic analysis has revealed that the limestone is composed of bioclastic wackestone, boundstone, and fossiliferous wackestone. The igneous rock in the area is a grey-black hornblende andesite. Bangunsari fault, which cuts through the study area, disturbs the coastal terraces to its south. The results of the quantitative assessment show that the site's potential educational use, potential touristic use, and degradation risk scores are 92.5, 80, and 56.25, respectively. The assessment scores describe the site as having potential for education and tourism uses, with a medium risk of degradation. Quite prominent cultural elements, which form the local community's identity, are included as a complement to the identification of the site. In order to preserve and maintain the sustainability of this potential geodiversity site, a high commitment related to geoconservation is required.

Keywords

• geodiversity site
• geodiversity elements
• potential educational use
• potential touristic use
• degradation risk
• quantitative assessment