Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/10968
DC Field | Value | Language |
---|---|---|
dc.date.accessioned | 2018-03-05T10:17:06Z | en |
dc.date.available | 2018-03-05T10:17:06Z | en |
dc.date.issued | 2017 | en |
dc.identifier.uri | http://hdl.handle.net/2122/10968 | en |
dc.description.abstract | In this multimethodological study, microstructural observations of fault rocks are combined with micromechanical property analyses (contact resonance atomic force microscopy (CR-AFM)) and with rotary friction experiments (Slow- to High-Velocity rotary-shear friction Apparatus apparatus) to find evidence of seismic to aseismic slip and understand the nanoscale rheology of clay-bearing, carbonate-hosted faults. Fluidized structures, truncated clasts, pores and vesicles, and phyllosilicate nanosized spherules and tubes suggest fast deformation events occurred during seismic slip, whereas clay-assisted pressure-solution processes, clumped clasts, foliation surfaces, and mantled clasts indicate slow deformation events occurred during postseismic/interseismic periods. CR-AFM measurements show that the occurrence of ~5 wt % of clay within the carbonate-hosted gouges can significantly reduce the fault core stiffness at nanoscale. In addition, during high-velocity friction experiments simulating seismic slip conditions, the presence of ultrathin phyllosilicate-bearing (≤3 wt %) layers within calcite gouges, as those observed in the natural fault, show faster dynamic weakening than that of pure calcite gouges. The weak behavior of such layers could facilitate the upward propagation of seismic slip during earthquakes, thus possibly enhancing surface faulting. Microstructural observations and experimental evidence fit some well-known geophysical and geodetic observations on the short- to long-term mechanical behavior of faults such as postseismic/interseismic aseismic creep, interseismic fault locking, and seismic slip propagation up to the Earth's surface. ©2017. American Geophysical Union. All Rights Reserved. | en |
dc.language.iso | English | en |
dc.relation.ispartof | Journal of Geophysical Research: Solid Earth | en |
dc.relation.ispartofseries | /122 (2017) | en |
dc.title | Microstructural evidence for seismic and aseismic slips along clay-bearing, carbonate faults | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 3895 – 3915 | en |
dc.identifier.doi | 10.1002/2017JB014042 | en |
dc.description.obiettivoSpecifico | 4T. Sismologia, geofisica e geologia per l'ingegneria sismica | en |
dc.description.obiettivoSpecifico | 2IT. Laboratori sperimentali e analitici | en |
dc.description.journalType | JCR Journal | en |
dc.contributor.author | Smeraglia, Luca | en |
dc.contributor.author | Bettucci, Andrea | en |
dc.contributor.author | Billi, Andrea | en |
dc.contributor.author | Carminati, Eugenio | en |
dc.contributor.author | Cavallo, Andrea | en |
dc.contributor.author | Di Toro, Giulio | en |
dc.contributor.author | Natali, Marco | en |
dc.contributor.author | Passeri, Daniele | en |
dc.contributor.author | Rossi, Marco | en |
dc.contributor.author | Spagnuolo, Elena | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), 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 | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.orcid | 0000-0003-0471-4839 | - |
crisitem.author.orcid | 0000-0002-6368-1873 | - |
crisitem.author.orcid | 0000-0002-6618-3474 | - |
crisitem.author.orcid | 0000-0002-7736-983X | - |
crisitem.author.orcid | 0000-0001-8189-1359 | - |
crisitem.author.orcid | 0000-0002-1377-5812 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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 |
Files in This Item:
File | Description | Size | Format | |
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Smeraglia_et_al-2017-Journal_of_Geophysical_Research__Solid_Earth.pdf | 7.23 MB | Adobe PDF | View/Open |
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