Geochemical and petrological data pertaining to the eruptive deposits of 1883 caldera-forming eruption of Krakatau (NERC grants NE/L002612/1, NE/N014286/1, NE/T002026/1)
Geochemical data has been collected on samples from new exposures of the 1883 deposits, revealed by the 2018 tsunamigenic flank collapse of Anak Krakatau, which provides improved stratigraphic context. Whole-rock data taken by X-ray Florescence shows no systematic stratigraphic correlation. Chemical data for transects across, and spot points on, plagioclase phenocrysts, including some trace element data, all obtained using Electron Probe Microanalysis (EPMA), with Backscatter electron (BSE) images of crystals, obtained using Scanning Electron Microscope, reveal complex zoning profiles. However, chemical data for transects across pyroxene phenocrysts, obtained using EPMA, show this phenocryst phase is largely unzoned. The dataset also includes chemical data for spots on Fe/Ti oxides, included on the rims of pyroxene, and obtained using EPMA. Matrix glass chemistry, obtained via EPMA, shows that the early eruptive ash is more evolved than the pyroclastic material that follows, and that there is a slight overall trend to a more homogenous, less evolved melt composition. The 1883 eruption of Krakatau was a large, cardera-forming eruption that caused approximately 36,000 fatalities. It is also the only eruption of its size to have accompanying written accounts.
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Citation proposal
. Geochemical and petrological data pertaining to the eruptive deposits of 1883 caldera-forming eruption of Krakatau (NERC grants NE/L002612/1, NE/N014286/1, NE/T002026/1). https://metadata.bgs.ac.uk/geonetwork/srv/api/records/ae539493-44cf-1eb3-e054-002128a47908 |
Simple
- Date ( Creation )
- 2020-08-27
Principal investigator
Principal investigator
Principal investigator
Originator
University of Oxford
-
Amber Madden-Nadeau
(Department of Earth Sciences )
South Parks Road
Oxford
OX1 3AN
Distributor
Point of contact
- Maintenance and update frequency
- notApplicable notApplicable
- GEMET - INSPIRE themes
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- Geology
- BGS Thesaurus of Geosciences
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- Volcanism , Electron microprobes , X ray fluorescence spectroscopy , Subduction , Stratigraphy , Phenocryst , Plagioclase , Petrology , Whole rock analysis , Volcanoes , Pyroxene , Caldera , Geochemistry
- Keywords
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- NERC_DDC
- Access constraints
- otherRestrictions Other restrictions
- Use constraints
- otherRestrictions Other restrictions
- Other constraints
- The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.
- Other constraints
- Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"
- Metadata language
- English English
- Topic category
-
- Geoscientific information
- Geographic identifier
-
ID
- Date ( Revision )
- 2009
- Geographic identifier
-
IDN
- Date ( Revision )
- 2009
- Geographic identifier
-
INDONESIA [id=560000]
- Date ( Creation )
- 1979
N
S
E
W
))
Reference System Information
No information provided.
- Distribution format
-
- MS Excel ()
Distributor
- Hierarchy level
- dataset Dataset
- Other
- dataset
Conformance result
- Date ( Publication )
- 2011
- Explanation
- See the referenced specification
- Pass
- false
Conformance result
- Date ( Publication )
- 2010-12-08
- Explanation
- See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
- Pass
- false
- Statement
- Samples were analysed for major, minor element chemistry, Department of Geology, University of Leicester (PANalytical Axios Advanced XRF spectrometer). BSE images of plagioclase (Plg) were obtained at 20KeV with 15 μ aperture: FEI Quanta 650 field emission gun (FEG) SEM, Department of Earth Sciences (ES), and a Zeiss Merlin Compact FEG-SEM, Sir William Dunn School of Pathology, University of Oxford (Ox). Phenocrysts were analysed on a FEG CAMECA SX-5 electron microprobe at ES, Ox. Major element traverses for Plg were collected at 15 kV and 20 nA, with 5 μ beam. Fe, Mg,Ti and Sr, analysed under a 40 nA beam, longer peak count times, parallel transects. Pyroxene phenocryst tranverses, and Fe/Ti oxide point analyses, obtained at 15 kV, focused beam of 20 nA. Matrix glass analysed at 15 kV with 5 μ beam of 6 nA: Jeol JXA-8200 electron Microprobe, School of Archeology, Ox.
gmd:MD_Metadata
- File identifier
- ae539493-44cf-1eb3-e054-002128a47908 XML
- Metadata language
- English English
- Hierarchy level
- dataset Dataset
- Date stamp
- 2021-02-25
- Metadata standard version
- 2.3
Point of contact
British Geological Survey
Environmental Science Centre,Keyworth
NOTTINGHAM
NOTTINGHAMSHIRE
NG12 5GG
United Kingdom
- Dataset URI
- http://data.bgs.ac.uk/id/dataHolding/13607662