The Orange Tuff : a Late Pleistocene tephra-fall deposit emplaced by a VEI 5 silicic Plinian eruption in West Java, Indonesia

A VEI 5 dacite eruption emplaced the Orange Tuff about between 34.3 cal kBP and 17.2 cal kBP. Gunung Salak is the unit’s source and the Orange Tuff represents the most recent such eruption from any of the volcanoes southwest of Bogor, Indonesia. The Orange Tuff is the region’s first such documented...

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Main Authors: Harpel, Christopher J., Kushendratno, Stimac, James, Primulyana, Sofyan, de Harpel, Cecilia F. Avendaño Rodríguez
Other Authors: Earth Observatory of Singapore
Format: Article
Language:English
Published: 2019
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Online Access:https://hdl.handle.net/10356/82733
http://hdl.handle.net/10220/49735
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-827332020-09-26T21:28:00Z The Orange Tuff : a Late Pleistocene tephra-fall deposit emplaced by a VEI 5 silicic Plinian eruption in West Java, Indonesia Harpel, Christopher J. Kushendratno Stimac, James Primulyana, Sofyan de Harpel, Cecilia F. Avendaño Rodríguez Earth Observatory of Singapore Science::Geology West Java Salak A VEI 5 dacite eruption emplaced the Orange Tuff about between 34.3 cal kBP and 17.2 cal kBP. Gunung Salak is the unit’s source and the Orange Tuff represents the most recent such eruption from any of the volcanoes southwest of Bogor, Indonesia. The Orange Tuff is the region’s first such documented tephra-fall deposit whose characteristics and phenocryst geochemistry make it readily identifiable over at least 1250 km2. Magnetite compositions and temperature and fO2 estimates inferred from Fe-Ti oxide compositions are particularly useful for identifying the unit. Deposit characteristics suggest that the eruption lasted 1–11 h with mass eruption rates of 1.0–8.3 × 108 kg/s and a column height of 31–40 km. The eruption’s column height and the deposit’s 2.5–11 km3 volume suggest that the unit was dispersed over a much wider area than mapped. The unit is a marker bed throughout its mapped distribution and has potential to be applied over a much broader area as a regional marker bed. The large population and infrastructure proximal to Salak suggest that the unit should be considered in hazards assessments despite its age and the lack of subsequent similar eruptions. Published version 2019-08-21T08:27:32Z 2019-12-06T15:04:26Z 2019-08-21T08:27:32Z 2019-12-06T15:04:26Z 2019 Journal Article Harpel, C. J., Kushendratno., Stimac, J., de Harpel, C. F. A. R., & Primulyana, S. (2019). The Orange Tuff : a Late Pleistocene tephra-fall deposit emplaced by a VEI 5 silicic Plinian eruption in West Java, Indonesia. Bulletin of Volcanology, 81(6), 33-. doi:10.1007/s00445-019-1292-y 0258-8900 https://hdl.handle.net/10356/82733 http://hdl.handle.net/10220/49735 10.1007/s00445-019-1292-y en Bulletin of Volcanology © 2019 The Author(s). This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 19 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Science::Geology
West Java
Salak
spellingShingle Science::Geology
West Java
Salak
Harpel, Christopher J.
Kushendratno
Stimac, James
Primulyana, Sofyan
de Harpel, Cecilia F. Avendaño Rodríguez
The Orange Tuff : a Late Pleistocene tephra-fall deposit emplaced by a VEI 5 silicic Plinian eruption in West Java, Indonesia
description A VEI 5 dacite eruption emplaced the Orange Tuff about between 34.3 cal kBP and 17.2 cal kBP. Gunung Salak is the unit’s source and the Orange Tuff represents the most recent such eruption from any of the volcanoes southwest of Bogor, Indonesia. The Orange Tuff is the region’s first such documented tephra-fall deposit whose characteristics and phenocryst geochemistry make it readily identifiable over at least 1250 km2. Magnetite compositions and temperature and fO2 estimates inferred from Fe-Ti oxide compositions are particularly useful for identifying the unit. Deposit characteristics suggest that the eruption lasted 1–11 h with mass eruption rates of 1.0–8.3 × 108 kg/s and a column height of 31–40 km. The eruption’s column height and the deposit’s 2.5–11 km3 volume suggest that the unit was dispersed over a much wider area than mapped. The unit is a marker bed throughout its mapped distribution and has potential to be applied over a much broader area as a regional marker bed. The large population and infrastructure proximal to Salak suggest that the unit should be considered in hazards assessments despite its age and the lack of subsequent similar eruptions.
author2 Earth Observatory of Singapore
author_facet Earth Observatory of Singapore
Harpel, Christopher J.
Kushendratno
Stimac, James
Primulyana, Sofyan
de Harpel, Cecilia F. Avendaño Rodríguez
format Article
author Harpel, Christopher J.
Kushendratno
Stimac, James
Primulyana, Sofyan
de Harpel, Cecilia F. Avendaño Rodríguez
author_sort Harpel, Christopher J.
title The Orange Tuff : a Late Pleistocene tephra-fall deposit emplaced by a VEI 5 silicic Plinian eruption in West Java, Indonesia
title_short The Orange Tuff : a Late Pleistocene tephra-fall deposit emplaced by a VEI 5 silicic Plinian eruption in West Java, Indonesia
title_full The Orange Tuff : a Late Pleistocene tephra-fall deposit emplaced by a VEI 5 silicic Plinian eruption in West Java, Indonesia
title_fullStr The Orange Tuff : a Late Pleistocene tephra-fall deposit emplaced by a VEI 5 silicic Plinian eruption in West Java, Indonesia
title_full_unstemmed The Orange Tuff : a Late Pleistocene tephra-fall deposit emplaced by a VEI 5 silicic Plinian eruption in West Java, Indonesia
title_sort orange tuff : a late pleistocene tephra-fall deposit emplaced by a vei 5 silicic plinian eruption in west java, indonesia
publishDate 2019
url https://hdl.handle.net/10356/82733
http://hdl.handle.net/10220/49735
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