Petrology and petrogenesis of igneous rock in Mount Endut, Banten Province

Abstract

Mount Endut is a volcano located in the eastern part of Banten Province. Previous studies revealed that Mount Endut consists mainly of Quaternary volcanic and Tertiary plutonic igneous rocks respectively. This research focuses on the petrology of igneous rocks found in the southern region of Mount Endut in order to determine the type of igneous rocks, evolution of magma, and reconfirming historical geological process occurring in Mount Endut area. Petrographic analysis was performed on 11 samples and geochemical analysis was performed on 30 samples. Petrographic analysis revealed three types of igneous rocks, andesite porphyry, diorite porphyry, and dacite porphyry. Furthermore, geochemical analysis revealed that the igneous rocks in Mount Endut are comprised of basaltic andesite, andesite, dacite, basaltic trachy-andesite, trachy-andesite, and trachyte or trachydacite which originated from calc-alkaline magma series. The integration of petrographic and geochemical analysis supports the regional geological process where Mount Endut was formed either in an island arc or an active continental margin. The first section in your paper.

Chemical Elements Analysis of Arjuno-Welirang Igneous Rocks

“…Volcanic rocks in petrology and geology are extrusive igneous rocks (Yasir et al, 2022). This type of rock is formed from magma that comes to the surface, which is called lava (Adikusuma et al, 2020;Boomeri et al, 2020;Patro et al, 2022). The lava can escape through the central channel or cracks and undergo a cooling process, and after this, it is referred to as igneous rocks (Wilson et al, 2019).…”

Petrographic Analysis of Bentong-Raub Suture Rock Types in Batu Melintang, Kelantan

“…In this study, petrographic analysis was used to determine the types of rock in Batu Melintang area that related to the lithologies of the Bentong-Raub Suture. The determination of rock types by using petrographic analysis was proven by several previous studies [4], [5]. Researchers from Adikusuma et al [4] used assessment from petrographic analysis to identify three different types of igneous rocks in the Mount Endut region: andesite porphyry, diorite porphyry, and dacite porphyry.…”

“…The determination of rock types by using petrographic analysis was proven by several previous studies [4], [5]. Researchers from Adikusuma et al [4] used assessment from petrographic analysis to identify three different types of igneous rocks in the Mount Endut region: andesite porphyry, diorite porphyry, and dacite porphyry. Research from Bilic and Garasic [5] also able to classify three rock types in the St. Barbara ore mine; sublithoarenite, quartz arenite and quartz greywacke by using petrographic analysis.…”