Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/9312
DC Field | Value | Language |
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dc.contributor.authorall | Smith, S. A. F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.authorall | Di Toro, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.authorall | Kim, S.; Department of Earth and Environmental Sciences, Korea University, Seoul 136-701, Republic of Korea | en |
dc.contributor.authorall | Ree, J.-H.; Department of Earth and Environmental Sciences, Korea University, Seoul 136-701, Republic of Korea | en |
dc.contributor.authorall | Nielsen, S. B.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.authorall | Billi, A.; Consiglio Nazionale delle Ricerche, Istituto di Geologia Ambientale e Geoingegneria, c.o. Dipartimento Scienze della Terra, Sapienza Università di Roma, 00185 Rome, Italy | en |
dc.contributor.authorall | Spiess, R.; Dipartimento delle Scienze della Terra, Università degli Studi di Padova, Via G. Gradenigo 6, 35131 Padua, Italy | en |
dc.date.accessioned | 2015-02-09T07:49:29Z | en |
dc.date.available | 2015-02-09T07:49:29Z | en |
dc.date.issued | 2013-10 | en |
dc.identifier.uri | http://hdl.handle.net/2122/9312 | en |
dc.description.abstract | Solidified frictional melts, or pseudotachylytes, remain the only unambiguous indicator of seismic slip in the geological record. However, pseudotachylytes form at >5 km depth, and there are many rock types in which they do not form at all. We performed low- to high-velocity rock friction experiments designed to impose realistic coseismic slip pulses on calcite fault gouges, and report that localized dynamic recrystallization may be an easy-to-recognize microstructural indicator of seismic slip in shallow, otherwise brittle fault zones. Calcite gouges with starting grain size <250 μm were confined up to 26 MPa normal stress using a purpose-built sample holder. Slip velocities were between 0.01 and 3.4 m s−1, and total displacements between 1 and 4 m. At coseismic slip velocities ≥0.1 m s−1, the gouges were cut by reflective principal slip surfaces lined by polygonal grains <1 μm in size. The principal slip surfaces were flanked by <300 μm thick layers of dynamically recrystallized calcite (grain size 1–10 μm) containing well-defined shape- and crystallographic-preferred orientations. Dynamic recrystallization was accompanied by fault weakening and thermal decomposition of calcite to CO2 + CaO. The recrystallized calcite aggregates resemble those found along the principal slip surface of the Garam thrust, South Korea, exhumed from <5 km depth. We suggest that intense frictional heating along the experimental and natural principal slip surfaces resulted in localized dynamic recrystallization, a microstructure that may be diagnostic of seismic slip in the shallow crust. | en |
dc.language.iso | English | en |
dc.publisher.name | Geological Society of America | en |
dc.relation.ispartof | Geology (Geological Society of America) | en |
dc.relation.ispartofseries | 1/41(2013) | en |
dc.subject | Rock mechanics | en |
dc.subject | shallow earthquales | en |
dc.title | Coseismic recrystallization during shallow earthquake slip | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 63-66 | en |
dc.subject.INGV | 04. Solid Earth::04.01. Earth Interior::04.01.04. Mineral physics and properties of rocks | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.06. Rheology, friction, and structure of fault zones | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.09. Structural geology | en |
dc.subject.INGV | 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics | en |
dc.identifier.doi | 10.1130/G33588.1 | en |
dc.description.obiettivoSpecifico | 4T. Fisica dei terremoti e scenari cosismici | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | reserved | en |
dc.relation.issn | 0091-7613 | en |
dc.relation.eissn | 1943-2682 | en |
dc.contributor.author | Smith, S. A. F. | en |
dc.contributor.author | Di Toro, G. | en |
dc.contributor.author | Kim, S. | en |
dc.contributor.author | Ree, J.-H. | en |
dc.contributor.author | Nielsen, S. B. | en |
dc.contributor.author | Billi, A. | en |
dc.contributor.author | Spiess, R. | 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 | Department of Earth and Environmental Sciences, Korea University, Seoul 136-701, Republic of Korea | en |
dc.contributor.department | Department of Earth and Environmental Sciences, Korea University, Seoul 136-701, Republic of Korea | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.department | Consiglio Nazionale delle Ricerche, Istituto di Geologia Ambientale e Geoingegneria, c.o. Dipartimento Scienze della Terra, Sapienza Università di Roma, 00185 Rome, Italy | en |
dc.contributor.department | Dipartimento delle Scienze della Terra, Università degli Studi di Padova, Via G. Gradenigo 6, 35131 Padua, Italy | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | reserved | - |
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.dept | Environmental Engineering, Pusan National University, Busan 609-735, Korea | - |
crisitem.author.dept | Department of Earth and Environmental Sciences, Korea University, Seoul 136-701, Republic of Korea | - |
crisitem.author.dept | Durham University, Durham, UK | - |
crisitem.author.dept | Univ. di Padova, Dpt. Geoscienze | - |
crisitem.author.orcid | 0000-0002-6618-3474 | - |
crisitem.author.orcid | 0000-0002-9214-2932 | - |
crisitem.author.orcid | 0000-0002-6368-1873 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
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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GEology-2013-Smith.pdf | 1.5 MB | Adobe PDF |
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