Peer Reviewer Journal Internasional Magma Evolution of Ngebel Volcano, Ponorogo, East Java, Indonesia

Dwi Fitri, Yudiantoro (2023) Peer Reviewer Journal Internasional Magma Evolution of Ngebel Volcano, Ponorogo, East Java, Indonesia. Prodi Teknik Geologi Fakultas Teknologi Mineral UPN "Veteran" Yogyakarta. (Unpublished)

Text 3. Peer Reviewer 1-2 Evolution Ngebel.pdf Download (758kB)

Abstract

The magma evolution of Ngebel Volcano, both temporally and spatially, is represented by the characteristics
of its lava. Ngebel Volcano, located in East Java, is a Quaternary andesitic stratovolcano. This volcano is part of the
Wilis Volcanic Complex. The volcanism stage of Ngebel Volcanic Complex can be divided into the Jeding with andesitic
basalt (SiO2
49 - 59%), pyroxene andesite Kemlandingan (SiO2
49 - 59%), Manyutan with hornblende andesite (SiO2
49 - 59%), and Ngebel with dacite (SiO2
: 49 - 59%). The variation of major elements combined with petrographic
features such as plagioclase, pyroxene, hornblende, quartz, and opaque minerals from basaltic andesite to dacite is
interesting. The minerals show that the magma differentiation process of Ngebel Volcanic Complex is the results of fractional crystallization of magma. The purpose of this study is to determine the evolution of magma from volcanic rocks of which stratigraphic positions have been determined. The analytical methodology used is petrographic and geochemical analysis. Detailed temporal evolution shows that magma from the Ngebel Volcanic Complex underwent
a differentiation process that changed the magma composition from mafic to more felsic

Item Type:	Other
Subjects:	Q Science > QE Geology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Dr.Ir.MT DWI FITRI YUDIANTORO
Date Deposited:	16 Feb 2023 04:07
Last Modified:	16 Feb 2023 04:07
URI:	http://eprints.upnyk.ac.id/id/eprint/32687

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