Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/8161
DC Field | Value | Language |
---|---|---|
dc.contributor.authorall | Mollo, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.authorall | Putirka, K.; University of California | en |
dc.contributor.authorall | Iezzi, G.; Università di Chieti | en |
dc.contributor.authorall | Scarlato, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.date.accessioned | 2012-10-11T14:05:18Z | en |
dc.date.available | 2012-10-11T14:05:18Z | en |
dc.date.issued | 2013 | en |
dc.identifier.uri | http://hdl.handle.net/2122/8161 | en |
dc.description.abstract | In this study, we have investigated the control of cooling rate on the composition of titanomagnetite formed from a trachybasaltic melt. Results show that disequilibrium growth conditions exert a primary control on the abundance, texture, and composition of the crystals. As the degree of cooling is increased, titanomagnetites show immature textures and are progressively enriched in Al ? Mg and depleted in Ti. Thus, early-formed titanomagnetite nuclei do not re-equilibrate with the melt over faster cooling rates; instead, their compositions are far from equilibrium. On the basis of the different intra-crystal redistribution rates for Ti, Al, and Mg, we have calibrated a geospeedometer that represents the first quantitative description of the effect of cooling rate on titanomagnetite composition. This model was tested using the compositions of titanomagnetites in lava and dike samples from Mt. Etna volcano whose crystallization conditions resemble those of our experiments. Cooling rates calculated for lava samples are comparable with those measured in several volcanic complexes. At Mt. Etna, compositional variations of titanomagnetite grains from the innermost to the outermost part of a dike testify to progressively higher degrees of cooling, in agreement with numerical simulations of thermal gradients in and around magmatic intrusions. | en |
dc.language.iso | English | en |
dc.publisher.name | Springer Verlag Germany | en |
dc.relation.ispartof | Contributions to Mineralogy and Petrology | en |
dc.relation.ispartofseries | /165 (2013) | en |
dc.subject | Titanomagnetite; cooling rate | en |
dc.title | The control of cooling rate on titanomagnetite composition: implications for a geospeedometry model applicable to alkaline rocks from Mt. Etna volcano | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.description.pagenumber | 457-475 | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.05. Mineralogy and petrology | en |
dc.identifier.doi | 10.1007/s00410-012-0817-6 | en |
dc.description.obiettivoSpecifico | 2.3. TTC - Laboratori di chimica e fisica delle rocce | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | restricted | en |
dc.relation.issn | 0010-7999 | en |
dc.relation.eissn | 1432-0967 | en |
dc.contributor.author | Mollo, S. | en |
dc.contributor.author | Putirka, K. | en |
dc.contributor.author | Iezzi, G. | en |
dc.contributor.author | Scarlato, P. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.department | University of California | en |
dc.contributor.department | Università di Chieti | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Università di Roma "La Sapienza" | - |
crisitem.author.dept | University of California | - |
crisitem.author.dept | Università degli studi G. D'annunzio, Chieti Pescara, Italy | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.orcid | 0000-0003-1933-0192 | - |
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: | Article published / in press |
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01_Mollo et al._2012_CMP.pdf | 927.56 kB | Adobe PDF |
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