Case studies of electrical and electromagnetic methods applied to mapping active faults beneath the thick quaternary

Suzuki, Koichi; Toda, Shinji; Kusunoki, Kenichi; Fujimitsu, Yasuhiro; Mogi, Tohru; Jomori, Akira

doi:10.1016/s0013-7952(99)00132-5

Cited by 96 publications

(27 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been shown to be useful for mapping and characterizing the deep geometry of active faults (Giano et al 2000a, b;Suzuki et al 2000;Caputo et al 2003). Technically an ERT survey can be carried out using different electrode configurations [dipole-dipole (DD), Wenner-Schlumberger (WS), etc.]…”

Section: Geophysical Analysesmentioning

confidence: 99%

Late Holocene earthquakes in southern Apennine: paleoseismology of the Caggiano fault

Galli

Bosi

Piscitelli

et al. 2006

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

Although southern Apennines are characterized by the strongest crustal earthquakes of centralwestern Mediterranean region, local active tectonics is still poorly known, at least for seismogenic fault-recognition is concerned. Research carried out in the Maddalena Mts. (southeast of Irpinia, the region struck by the M w =6.9, 1980 earthquake) indicates historical ruptures along a 17-km-long, N120°normal fault system (Caggiano fault). The system is characterized by a bedrock fault scarp carved in carbonate rocks, which continues laterally into a retreating and eroded smoothed scarp, affecting the clayey-siliciclastic units, and by smart scarps and discontinuous free-faces in Holocene cemented slope-debris and in modern alluvial fan deposits. The geometry of the structure in depth has been depicted by means of electrical resistivity tomography, while paleoseismic analysis carried out in three trenches revealed surface-faulting events during the past 7 ky BP ( 14 C age), the latest occurred in the past 2 ky BP ( 14 C age) and, probably, during/after slopedebris deposition related to the little ice age ($1400-1800 A.D.). Preliminary evaluation accounts for minimum slip rates of 0.3-0.4 mm/year, which is the same order of rates estimated for many active faults along the Apennine chain. Associated earthquakes might be in the order of M w =6.6, to be compared to the historical events occurred in the area (e.g., 1561 and 1857 p.p. earthquakes).

show abstract

Section: Geophysical Analysesmentioning

confidence: 99%

Late Holocene earthquakes in southern Apennine: paleoseismology of the Caggiano fault

Galli

Bosi

Piscitelli

et al. 2006

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

show abstract

“…This method has proven to be very useful in many studies concerned with environmental issues (e.g., FRID et al, 2008;HAMZAH et al, 2006;GUÉRIN et al, 2004), monitoring of landslides and rockslides (e.g., MERIC et al, 2005;GRANDJEAN et al, 2006), as well as the geological and structural characterization of basins (e.g., RIZZO et al, 2004), fault detection in subsurface layers (e.g. SUZUKI et al, 2000;DEMANET et al, 2001;VANNESTE et al, 2008), sinkhole detection (JARDANI et al, 2007) and imaging active volcanoes (REVIL et al, 2008). Depending on the size of the physical problem, ERT surveys have been performed mainly at small scales (decimetre scale for Excavation Damaged Zone monitoring, e.g., KRUSCHWITZ and YARAMANCI, 2004).…”

Section: Electrical Resistivity Tomography Methodsmentioning

confidence: 99%

Potential of Electrical Resistivity Tomography to Detect Fault Zones in Limestone and Argillaceous Formations in the Experimental Platform of Tournemire, France

Gelis¹,

Revil

Cushing³

et al. 2010

Pure Appl. Geophys.

View full text Add to dashboard Cite

International audienceThe Experimental platform of Tournemire (Aveyron, France) developed by IRSN (French Institute for Radiological Protection and Nuclear Safety) is located in a tunnel excavated in a clay-rock formation interbedded between two limestone formations. A well-identified regional fault crosscuts this subhorizontal sedimentary succession, and a subvertical secondary fault zone is intercepted in the clay-rock by drifts and boreholes in the tunnel at a depth of about 250 m. A 2D electrical resistivity survey was carried out along a 2.5 km baseline, and a takeout of 40 m was used to assess the potential of this method to detect faults from the ground surface. In the 300 m-thick zone investigated by the survey, electrical resistivity images reveal several subvertical low-resistivity discontinuities. One of these discontinuities corresponds to the position of the Cernon fault, a major regional fault. One of the subvertical conductive discontinuities crossing the upper limestone formation is consistent with the prolongation towards the ground surface of the secondary fault zone identified in the clay-rock formation from the tunnel. Moreover, this secondary fault zone corresponds to the upward prolongation of a subvertical fault identified in the lower limestone using a 3D high-resolution seismic reflection survey. This type of large-scale electrical resistivity survey is therefore a useful tool for identifying faults in superficial layers from the ground surface and is complementary to 3D seismic reflection surveys

show abstract

“…Electrical Resistivity Tomography (ERT) has emerged as one of the more frequently used and robust techniques for tracing faults at the surface from a few metres to a few tens of metres of depth (e.g. Suzuki et al 2000;Demanet et al 2001;Caputo et al 2003;Nguyen et al 2007). Faults are, however, often buried below a recent soil cover and the high resolution seismic reflection technique was used for mapping faults at greater depth, from few tens to few hundreds of metres (e.g.…”

Section: Methodsmentioning

confidence: 99%

Interaction between tectonic and erosion processes on the morphogenesis of an Alpine valley: geological and geophysical investigations in the lower Romanche valley (Belledonne massif, western Alps)

Roux

Schwartz

Gamond

et al. 2008

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

International audienceIn the Belledonne massif, the steep Paleozoic Belledonne Middle Fault (BMF) separates micaschists, displaying numerous landslides, from amphibolites. The massif is incised by the lower Romanche river valley. When crossing the BMF, the valley widens into a lozenge-shaped basin recently interpreted as an active pull-apart type structure associated with a major N110 striking Quaternary fault. Multidisciplinary investigations were carried out in the basin to check if this model has implications on the seismic and landslide hazard assessment. This study demonstrated the existence of a N80 sinistral strike slip Séchilienne Fault Zone (SFZ). This fault zone is suspected to offset the BMF by 375 m across the basin. Geophysical experiments revealed that the bedrock depth increases strongly in the basin, up to 350 m. Our study invalidates the active pull-apart origin of the basin and suggests it results from Quaternary glacial and fluvial erosion processes, magnified by the intersection of two inherited structures, the BMF and the SFZ

show abstract

Case studies of electrical and electromagnetic methods applied to mapping active faults beneath the thick quaternary

Cited by 96 publications

References 14 publications

Late Holocene earthquakes in southern Apennine: paleoseismology of the Caggiano fault

Late Holocene earthquakes in southern Apennine: paleoseismology of the Caggiano fault

Potential of Electrical Resistivity Tomography to Detect Fault Zones in Limestone and Argillaceous Formations in the Experimental Platform of Tournemire, France

Interaction between tectonic and erosion processes on the morphogenesis of an Alpine valley: geological and geophysical investigations in the lower Romanche valley (Belledonne massif, western Alps)

Contact Info

Product

Resources

About