Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/7642
DC Field | Value | Language |
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dc.contributor.authorall | Mittempergher, S.; Univ. di Padova, Dpt. Geoscienze | en |
dc.contributor.authorall | Di Toro, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.authorall | Gratier, J. P.; LGIT, Univ. Joseph Fourier, Grenoble | en |
dc.contributor.authorall | Hadizadeh, J; LGIT, Univ. Joseph Fourier, Grenoble | en |
dc.contributor.authorall | Smith, S. A. F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.authorall | Spiess, R.; Univ. di Padova, Dpt. Geoscienze | en |
dc.date.accessioned | 2012-01-27T13:51:43Z | en |
dc.date.available | 2012-01-27T13:51:43Z | en |
dc.date.issued | 2011 | en |
dc.identifier.uri | http://hdl.handle.net/2122/7642 | en |
dc.description.abstract | The San Andreas Fault Observatory at Depth (SAFOD) in Parkfield, central California, has been drilled through a fault segment that is actively deforming through creep and microearthquakes. Creeping is accommodated in two fault strands, the Southwest and Central Deforming Zones, embedded within a damaged zone of deformed shale and siltstone. During drilling, no pressurized fluids have been encountered, even though the fault zone acts as a permeability barrier to fluid circulation between the North American and Pacific plates. Microstructural analysis of sheared shales associated with calcite and anhydrite-bearing veins found in SAFOD cores collected at 1.5m from the Southwest Deforming Zone, suggests that transient increases of pore fluid pressure have occurred during the fault activity, causing mode I fracturing of the rocks. Such build-ups in fluid pressure may be related to permeability reduction during fault creep and pressure-solution processes, resulting in localized failure of small fault zone patches and providing a potential mechanism for the initiation of some of the microearthquakes registered in the SAFOD site. | en |
dc.language.iso | English | en |
dc.relation.ispartof | Geophysical Research Letters | en |
dc.relation.ispartofseries | /39 (2011) | en |
dc.subject | friction | en |
dc.title | Evidence of transient increases of fluid pressure 1 in SAFOD phase III cores | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | L03301 | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.01. Earthquake faults: properties and evolution | en |
dc.identifier.doi | 10.1029/2010GL046129 | en |
dc.description.obiettivoSpecifico | 3.1. Fisica dei terremoti | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | reserved | en |
dc.contributor.author | Mittempergher, S. | en |
dc.contributor.author | Di Toro, G. | en |
dc.contributor.author | Gratier, J. P. | en |
dc.contributor.author | Hadizadeh, J | en |
dc.contributor.author | Smith, S. A. F. | en |
dc.contributor.author | Spiess, R. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.department | LGIT, Univ. Joseph Fourier, Grenoble | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
dc.contributor.department | Univ. di Padova, Dpt. Geoscienze | 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 | LGIT, Grenoble, France | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
crisitem.author.dept | Univ. di Padova, Dpt. Geoscienze | - |
crisitem.author.orcid | 0000-0002-6618-3474 | - |
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.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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2010GL046129.pdf | 877.49 kB | Adobe PDF |
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