Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/3896
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dc.contributor.authorallFolco, L.; Museo Nazionale dell'Antartide, Università di Siena, via Laterina 8, I-53100 Siena, Italyen
dc.contributor.authorallCapra, A.; DAU, Politecnico di Bari, via Orabona 4, I-70125 Bari, Italyen
dc.contributor.authorallChiappini, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.authorallFrezzotti, M.; ENEA-GEM-CLIM, CR Casaccia, via Anguillarese 301, Santa Maria di Galeria, I-00060 Roma, Italyen
dc.contributor.authorallMellini, M.; Dipartimento di Scienze della Terra, Università di Siena, via Laterina 8, I-53100 Siena, Italyen
dc.contributor.authorallTabacco, I. E.; Dipartimento di Scienze della Terra, Università di Milano, via Cicognara 7, 20129 Milano, Italyen
dc.date.accessioned2008-06-18T14:32:04Zen
dc.date.available2008-06-18T14:32:04Zen
dc.date.issued2002-02en
dc.identifier.urihttp://hdl.handle.net/2122/3896en
dc.description.abstractThe Frontier Mountain blue ice field is an important Antarctic meteorite trap which has yielded 472 meteorite specimens since its discovery in 1984. Remote sensing analyses and field campaigns from 1993 to 1999 have furnished new glaciological data on ice flow, ice thickness, bedrock topography, ice ablation and surface mass transport by wind, along with detailed descriptions of the field situation at the trap. This solid set of data combined with an updated meteorite distribution map and terrestrial ages available from literature allows us to better describe the nature of the concentration mechanism. In particular, we observe that the meteorite trap forms in a blue ice field (1) located upstream of an absolute and a shallow sub-ice barriers; (2) characterized by compressive ice flow with horizontal velocities decreasing from 100 to <10 cm/year on approaching the obstacle; (3) undergoing mean ablation rates of 6.5 cm/year; (4) nourished by a limited snow accumulation zone extending ∼20 km upstream of the blue ice area. We also draw the following conclusions: (1) the origin of the meteorite trap can be explained according to the present-day glaciological situation; (2) the meteorite concentration develops according to the general principles of the "ice flow model"; (3) the accumulation model can be described as "stagnant ice or slow-moving ice against an absolute and submerged barriers", according to the descriptive schemes present in literature; (4) the Frontier Mountain ice field is an effective trap for meteorites weighing more than ∼200 g; for smaller masses, the combination of wind and glacial drift may remove meteorites in less than a few tens of thousands of years; (5) although the activation age of the Frontier Mountain trap is not yet constrained, we infer that one of the most important findsites may be as old as 50 ka, predating the last glacial maximum.en
dc.language.isoEnglishen
dc.publisher.nameMeteoritical Societyen
dc.relation.ispartofMeteoritics & Planetary Scienceen
dc.relation.ispartofseries2 / 37 (2002)en
dc.subjectFrontier Mountainen
dc.subjectAntarctic meteorite trapen
dc.subjectremote sensingen
dc.subjectglaciological dataen
dc.titleThe Frontier Mountain meteorite trap (Antarctica)en
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber209-228en
dc.subject.INGV04. Solid Earth::04.02. Exploration geophysics::04.02.04. Magnetic and electrical methodsen
dc.subject.INGV04. Solid Earth::04.02. Exploration geophysics::04.02.05. Downhole, radioactivity, remote sensing, and other methodsen
dc.subject.INGV04. Solid Earth::04.02. Exploration geophysics::04.02.06. Seismic methodsen
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dc.description.journalTypeJCR Journalen
dc.description.fulltextreserveden
dc.contributor.authorFolco, L.en
dc.contributor.authorCapra, A.en
dc.contributor.authorChiappini, M.en
dc.contributor.authorFrezzotti, M.en
dc.contributor.authorMellini, M.en
dc.contributor.authorTabacco, I. E.en
dc.contributor.departmentMuseo Nazionale dell'Antartide, Università di Siena, via Laterina 8, I-53100 Siena, Italyen
dc.contributor.departmentDAU, Politecnico di Bari, via Orabona 4, I-70125 Bari, Italyen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.departmentENEA-GEM-CLIM, CR Casaccia, via Anguillarese 301, Santa Maria di Galeria, I-00060 Roma, Italyen
dc.contributor.departmentDipartimento di Scienze della Terra, Università di Siena, via Laterina 8, I-53100 Siena, Italyen
dc.contributor.departmentDipartimento di Scienze della Terra, Università di Milano, via Cicognara 7, 20129 Milano, Italyen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextrestricted-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptMuseo Nazionale dell'Antartide, Università di Siena, via Laterina 8, I-53100 Siena, Italy-
crisitem.author.deptUniversità degli Studi di Modena e Reggio Emilia, Modena, Italy-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.deptENEA-CRE, Casaccia, Rome, Italy-
crisitem.author.deptDipartimento di Scienze della Terra, Università di Siena, via Laterina 8, I-53100 Siena, Italy-
crisitem.author.orcid0000-0001-7433-9435-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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