Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/5427
DC Field | Value | Language |
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dc.contributor.authorall | DEEGAN, F.M.; Uppsala University, Uppsala, Sweden | en |
dc.contributor.authorall | TROLL, V.R.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.authorall | FREDA, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.authorall | MCLEOD, C.; Durham University, Durham, United Kingdom | en |
dc.contributor.authorall | MALARKEY, J.; Durham University, Durham, United Kingdom | en |
dc.contributor.authorall | DAVIDSON, J.P.; Durham University, Durham, United Kingdom | en |
dc.contributor.authorall | CHADWICK, J.P.; Vrije Universiteit, Amsterdam, Netherlands | en |
dc.date.accessioned | 2010-01-05T12:10:47Z | en |
dc.date.available | 2010-01-05T12:10:47Z | en |
dc.date.issued | 2009-06-21 | en |
dc.identifier.uri | http://hdl.handle.net/2122/5427 | en |
dc.description.abstract | There is considerable evidence for ongoing, late-stage interaction between the magmatic system at Merapi volcano, Indonesia, and local crustal carbonate. In order to resolve the interaction processes in detail, we have performed a series of time-variable carbonate dissolution experiments in silicate melt using Merapi basaltic-andesite and local limestone as starting materials, at magmatic pressure and temperature. Major element profiling of the experimental products has identified strongly contrasting compositional domains of glass: a Ca-enriched zone containing up to 36 wt% CaO, and an unaffected, Ca-normal zone containing 8 to 10 wt% CaO. To investigate the systematics of strontium isotopes and trace elements (TE) during carbonate assimilation, we have used micro-sampling and high-precision analytical techniques to measure 87Sr/86Sr ratios and TE concentrations over the magma-carbonate and intra-melt interfaces in two of our experimental products. The isotope variation between the different glass compositions is distinct, with 87Sr/86Sr ranging from 0.705641 in the Ca-normal glass to 0.706532 in the Ca-enriched glass. The upper end of this range is considerably more radiogenic than the range reported for Merapi whole rock volcanic products (0.70501 to 0.70583, Gertisser & Keller, 2003 J Pet, 44, 457-489). Our data hence support a model of assimilation of crustal carbonate with highly radiogenic 87Sr/86Sr (0.708799) at Merapi volcano. Given that the starting materials used in the experiments have markedly distinct 87Sr/86Sr values we here present new and detailed insights about the behaviour of Sr isotopes during carbonate assimilation, with a focus on the processes that operate across the carbonate-melt interface and the intra-melt transitions. Strontium is a reliable tracer of magma-crust interaction and so we anticipate that our results will significantly help to quantify our comprehension of magma-carbonate interaction processes occurring at Merapi volcano. | en |
dc.language.iso | English | en |
dc.relation.ispartof | Goldschmidt | en |
dc.subject | Merapi, Indonesia | en |
dc.subject | Strontium isotope | en |
dc.subject | magma-carbonate interaction | en |
dc.title | Strontium isotope systematics of experimentally produced melts: understanding magma-carbonate interaction at Merapi volcano, Indonesia | en |
dc.type | Oral presentation | en |
dc.description.status | Published | en |
dc.subject.INGV | 04. Solid Earth::04.08. Volcanology::04.08.03. Magmas | en |
dc.description.ConferenceLocation | Davos, Switzerland | en |
dc.description.obiettivoSpecifico | 2.3. TTC - Laboratori di chimica e fisica delle rocce | en |
dc.description.fulltext | open | en |
dc.contributor.author | DEEGAN, F.M. | en |
dc.contributor.author | TROLL, V.R. | en |
dc.contributor.author | FREDA, C. | en |
dc.contributor.author | MCLEOD, C. | en |
dc.contributor.author | MALARKEY, J. | en |
dc.contributor.author | DAVIDSON, J.P. | en |
dc.contributor.author | CHADWICK, J.P. | en |
dc.contributor.department | Uppsala University, Uppsala, Sweden | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.department | Durham University, Durham, United Kingdom | en |
dc.contributor.department | Durham University, Durham, United Kingdom | en |
dc.contributor.department | Durham University, Durham, United Kingdom | en |
dc.contributor.department | Vrije Universiteit, Amsterdam, Netherlands | en |
item.openairetype | Oral presentation | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Department of Geosciences, Swedish Museum of Natural History | - |
crisitem.author.dept | Uppsala University | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.dept | Department of Earth Sciences, Durham University, | - |
crisitem.author.dept | Durham University, Durham, United Kingdom | - |
crisitem.author.dept | DEPARTMENT OF EARTH SCIENCES, THE UNIVERSITY OF DURHAM, DURHAM DH1 3LE, UK | - |
crisitem.author.dept | DEPARTMENT OF PETROLOGY (FALW), VRIJE UNIVERSITEIT, 1081 HV AMSTERDAM, THE NETHERLANDS | - |
crisitem.author.orcid | 0000-0002-9065-9225 | - |
crisitem.author.orcid | 0000-0003-1891-3396 | - |
crisitem.author.orcid | 0000-0002-2320-8096 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Conference materials |
Files in This Item:
File | Description | Size | Format | |
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Deegan et al_Goldschmidt 2009.pdf | 18.61 kB | Adobe PDF | View/Open |
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