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Influence of continental crust in the magmatic process of the Sunda – Tangkubanperahu Volcanic Complex, West Java, Indonesia

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Bibliographic Details
Title: Influence of continental crust in the magmatic process of the Sunda – Tangkubanperahu Volcanic Complex, West Java, Indonesia
Authors: Qayyima, Keisha Prillia, Eddy Sucipta, I G. B., Hasan, Kurnaemi Fadelia, Kurniawan, Idham Andri, Abdurrachman, Mirzam, Saepuloh, Asep, Susanto, Very
Source: IOP Conference Series: Earth and Environmental Science ; volume 1472, issue 1, page 012011 ; ISSN 1755-1307 1755-1315
Publisher Information: IOP Publishing
Publication Year: 2025
Description: The Sunda Arc may possibly be one of the most complex volcanic systems in the world. While it is thought to result from the convergence between Indo-Australian and Eurasian Plates, the understanding of the characteristics of the underlying crust, however, is still an enigma. Through the observation of volcanic products from Sunda – Tangkubanperahu Volcanic Complex in West Java, this research was carried out to comprehend the characteristics of this arc. This volcanic complex consists of Sunda Volcano, Bukittunggul – Manglayang Cone Complex, and Tangkubanperahu Volcano. Analyses of the lava showed medium to high K calc-alkaline affinity in SiO 2 vs. K 2 O diagram, but some are tholeiitic in SiO 2 vs. FeO*/MgO diagram. The difference in affinity is due to the relative Fe enrichment in the majority of the samples, most notably in the Tangkubanperahu Volcano products. The abundance of K is accompanied by the enrichment of other incompatible elements such as Sr, Rb, Ba, Th, and Ce, also depletion in Ta, Nb, Zr, Hf, Ti, Y, and Yb, using MORB as a standard. Anomalously high Fe and K, with other geochemical signatures, along with evidence of assimilation in petrographic analysis (xenoliths) indicate a possible (continental) crustal contamination during the magmatic evolution. Other tectonic setting classifications using trace elements support that this volcanic complex is an active continental margin. The primary magmatic source is the melting of the oceanic crust of the Indo-Australian Plate, followed by a crustal contamination (continental crust fragment) from the Eurasian Plate during its activity. The parent magma undergoes three distinct differentiation processes, with a magma mixing playing a significant role before eruption.
Document Type: article in journal/newspaper
Language: unknown
DOI: 10.1088/1755-1315/1472/1/012011
DOI: 10.1088/1755-1315/1472/1/012011/pdf
Availability: https://doi.org/10.1088/1755-1315/1472/1/012011
https://iopscience.iop.org/article/10.1088/1755-1315/1472/1/012011
https://iopscience.iop.org/article/10.1088/1755-1315/1472/1/012011/pdf
Rights: https://creativecommons.org/licenses/by/4.0/ ; https://iopscience.iop.org/info/page/text-and-data-mining
Accession Number: edsbas.553F7C32
Database: BASE
Description
Abstract:The Sunda Arc may possibly be one of the most complex volcanic systems in the world. While it is thought to result from the convergence between Indo-Australian and Eurasian Plates, the understanding of the characteristics of the underlying crust, however, is still an enigma. Through the observation of volcanic products from Sunda – Tangkubanperahu Volcanic Complex in West Java, this research was carried out to comprehend the characteristics of this arc. This volcanic complex consists of Sunda Volcano, Bukittunggul – Manglayang Cone Complex, and Tangkubanperahu Volcano. Analyses of the lava showed medium to high K calc-alkaline affinity in SiO 2 vs. K 2 O diagram, but some are tholeiitic in SiO 2 vs. FeO*/MgO diagram. The difference in affinity is due to the relative Fe enrichment in the majority of the samples, most notably in the Tangkubanperahu Volcano products. The abundance of K is accompanied by the enrichment of other incompatible elements such as Sr, Rb, Ba, Th, and Ce, also depletion in Ta, Nb, Zr, Hf, Ti, Y, and Yb, using MORB as a standard. Anomalously high Fe and K, with other geochemical signatures, along with evidence of assimilation in petrographic analysis (xenoliths) indicate a possible (continental) crustal contamination during the magmatic evolution. Other tectonic setting classifications using trace elements support that this volcanic complex is an active continental margin. The primary magmatic source is the melting of the oceanic crust of the Indo-Australian Plate, followed by a crustal contamination (continental crust fragment) from the Eurasian Plate during its activity. The parent magma undergoes three distinct differentiation processes, with a magma mixing playing a significant role before eruption.
DOI:10.1088/1755-1315/1472/1/012011