Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/10675
DC Field | Value | Language |
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dc.date.accessioned | 2018-02-01T09:52:02Z | en |
dc.date.available | 2018-02-01T09:52:02Z | en |
dc.date.issued | 2017-11-15 | en |
dc.identifier.uri | http://hdl.handle.net/2122/10675 | en |
dc.description.abstract | Few studies have detailed the thermal architecture of large-volume pyroclastic density current deposits, although such work has a clear importance for understanding the dynamics of eruptions of this magnitude. Here we examine the temperature of emplacement of large-volume caldera-forming ignimbrites related to magmatic and phreatomagmatic eruptions at the Colli Albani volcano, Italy, by using thermal remanent magnetization analysis on both lithic and juvenile clasts. Results show that all the magmatic ignimbrites were deposited at high temperature, between the maximum blocking temperature of the magnetic carrier (600–630 °C) and the glass transition temperature (about 710 °C). Temperature estimations for the phreatomagmatic ignimbrite range between 200 and 400 °C, with most of the clasts emplaced between 200 and 320 °C. Because all the investigated ignimbrites, magmatic and phreatomagmatic, share similar magma composition, volume and mobility, we attribute the temperature difference to magma–water interaction, highlighting its pronounced impact on thermal dissipation, even in large-volume eruptions. The homogeneity of the deposit temperature of each ignimbrite across its areal extent, which is maintained across topographic barriers, suggests that these systems are thermodynamically isolated from the external environment for several tens of kilometers. Based on these findings, we propose that these large-volume ignimbrites are dominated by the mass flux, which forces the lateral transport of mass, momentum, and thermal energy for distances up to tens of kilometers away from the vent. We conclude that spatial variation of the emplacement temperature can be used as a proxy for determining the degree of forced-convection flow. | en |
dc.language.iso | English | en |
dc.relation.ispartof | Earth and Planetary Sciences Letters | en |
dc.relation.ispartofseries | /478 (2017) | en |
dc.subject | Colli Albani | en |
dc.subject | thermal remanent magnetization | en |
dc.subject | emplacement temperature | en |
dc.subject | large volume eruption | en |
dc.subject | magmatic/phreatomagmatic ignimbrite | en |
dc.title | Forced transport of thermal energy in magmatic and phreatomagmatic large volume ignimbrites: Paleomagnetic evidence from the Colli Albani volcano, Italy | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 179-191 | en |
dc.identifier.doi | 10.1016/j.epsl.2017.09.004 | en |
dc.description.obiettivoSpecifico | 1A. Geomagnetismo e Paleomagnetismo | en |
dc.description.journalType | JCR Journal | en |
dc.contributor.author | Trolese, Matteo | en |
dc.contributor.author | Giordano, Guido | en |
dc.contributor.author | Cifelli, Francesca | en |
dc.contributor.author | Winkler, Aldo | en |
dc.contributor.author | Mattei, Massimo | en |
dc.contributor.department | Dipartimento di Scienze, Università degli Studi Roma Tre | en |
dc.contributor.department | Dipartimento di Scienze, Università degli Studi Roma Tre | en |
dc.contributor.department | Dipartimento di Scienze, Università degli Studi Roma Tre | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | en |
dc.contributor.department | Dipartimento di Scienze, Università degli Studi Roma Tre | 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 degli studi di Roma Tre, Dipartimento di Scienze | - |
crisitem.author.dept | Università degli Studi di Roma Tre | - |
crisitem.author.dept | Università degli studi di Roma TRE | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
crisitem.author.dept | Università degli studi di Roma TRE | - |
crisitem.author.orcid | 0000-0003-4356-4132 | - |
crisitem.author.orcid | 0000-0002-5819-443X | - |
crisitem.author.orcid | 0000-0002-0653-0059 | - |
crisitem.author.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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1-s2.0-S0012821X17304995-main.pdf | 2.7 MB | Adobe PDF |
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