Slip history of the Magnola fault (Apennines, Central Italy) from 36Cl surface exposure dating: evidence for strong earthquakes over the Holocene

Palumbo, Luigi; Benedetti, Lucilla; Bourlès, Didier; Cinque, Aldo; Finkel, Robert C.

doi:10.1016/j.epsl.2004.06.012

Cited by 129 publications

(129 citation statements)

References 25 publications

Supporting

Mentioning

121

Contrasting

Order By: Relevance

“…Other geological processes like biogeochemical conditions in paleo-seawater (Shields and Stille, 2001) and weathering processes have also used the REE as primary indices (Patino et al, 2003). The REE-Y concentration measured along the carbonate scarp of the Magnola Fault (Italy) revealed remarkable fluctuations that match with the rupture zones identified independently by Cl 36 (Palumbo et al 2004;Carcalliet et al, 2008). Manighetti at el.…”

Section: Introductionsupporting

confidence: 53%

Preliminary results of REE-Y sorption on carbonate rocks

Moraetis¹,

Mouslopoulou

2017

geosociety

View full text Add to dashboard Cite

show abstract

Section: Introductionsupporting

confidence: 53%

Preliminary results of REE-Y sorption on carbonate rocks

Moraetis¹,

Mouslopoulou

2017

geosociety

View full text Add to dashboard Cite

show abstract

“…Extensive paleoseismological studies have also documented a longer-term history of large earthquakes in the area (GALLI et al, 2008). Many of the active faults are associated with well developed fault scarps up to 10-15 m in height that record progressive exhumation of the footwalls during the Holocene, often incrementally during earthquake slip (CARCAILLET et al, 2008;PALUMBO et al, 2004;SCHLAGENHAUF et al, 2010). Vol.…”

Section: Seismotectonics In Central Italymentioning

confidence: 99%

“…1b). Paleoseismological and sedimentological investigations within the Fucino basin suggest that the Tre Monti fault zone has been active since the early Pliocene (GALADINI et al, 1997;GIRAUDI, 1988;PALUMBO et al, 2004;PICCARDI et al, 1999). Integration of field studies, borehole analysis, and industry seismic reflection profiles suggests that the total displacement across the central part of the Tre Monti fault zone, where our samples were collected, is of the order of 1.5-2 km, with most accommodated by the principal faults that define the en-echelon, Holocene fault scarps ( Fig.…”

Section: Geology Of the Fault Zonementioning

confidence: 99%

Principal Slip Zones in Limestone: Microstructural Characterization and Implications for the Seismic Cycle (Tre Monti Fault, Central Apennines, Italy)

Smith

Billi

Toro

et al. 2011

Pure Appl. Geophys.

123

View full text Add to dashboard Cite

Earthquakes in central Italy, and in other areas worldwide, often nucleate within and rupture through carbonates in the upper crust. During individual earthquake ruptures, most fault displacement is thought to be accommodated by thin principal slip zones. This study presents detailed microstructural observations of the slip zones of the seismically active Tre Monti normal fault zone. All of the slip zones cut limestone, and geological constraints indicate exhumation from\2 km depth, where ambient temperatures are 100C. Scanning electron microscope observations suggest that the slip zones are composed of 100% calcite. The slip zones of secondary faults in the damage zone contain protocataclastic and cataclastic fabrics that are cross-cut by systematic fracture networks and stylolite dissolution surfaces. The slip zone of the principal fault has much more microstructural complexity, and contains a 2–10 mm thick ultracataclasite that lies immediately beneath the principal slip surface. The ultracataclasite itself is internally zoned; 200–300 lm-thick ultracataclastic sub-layers record extreme localization of slip. Syn-tectonic calcite vein networks spatially associated with the sub-layers suggest fluid involvement in faulting. The ultracataclastic sub-layers preserve compelling microstructural evidence of fluidization, and also contain peculiar rounded grains consisting of a central (often angular) clast wrapped by a laminated outer cortex of ultra-fine-grained calcite. These ‘‘clast-cortex grains’’ closely resemble those produced during layer fluidization in other settings, including the basal detachments of catastrophic landslides and saturated high-velocity friction experiments on clay-bearing gouges. An overprinting foliation is present in the slip zone of the principal fault, and electron backscatter diffraction analyses indicate the presence of a weak calcite crystallographic preferred orientation (CPO) in the fine-grained matrix. The calcite c-axes are systematically inclined in the direction of shear. We suggest that fluidization of ultracataclastic sub-layers and formation of clast-cortex grains within the principal slip zone occurred at high strain rates during propagation of seismic ruptures whereas development of an overprinting CPO occurred by intergranular pressure solution during post-seismic creep. Further work is required to document the range of microstructures in localized slip zones that cross-cut different lithologies, and to compare natural slip zone microstructures with those produced in controlled deformation experiments

show abstract

“…Significantly, the normal fault array is one the best constrained in the world in terms of the variation in both displacement and slip rate along each of the fault strands; rates of throw have been calculated for a variety of time periods using methods as diverse as integrated seismic and borehole surveys (Cavinato et al, 2002), measurements of fault scarp offsets (Morewood & Roberts, 2002) and cosmogenic dating of fault scarps (Palumbo et al, 2004). A full review can be found in Roberts & Michetti, (2004).…”

Section: Regional Settingmentioning

confidence: 99%

Characterising the origin, nature and fate of sediment exported from catchments perturbed by active tectonics

2009

View full text Add to dashboard Cite

Changes to the tectonic boundary conditions governing erosional dynamics in upland catchments have a significant effect on the nature and magnitude of sediment supply to neighbouring basins. While these links have been explored in detail by numerical models of landscape evolution, there has been relatively little work to quantify the timing, characteristics and locus of sediment release from upland catchments in response to changing tectonic boundary conditions that are well-constrained independently. We address this challenge by quantifying the volume and

show abstract

Slip history of the Magnola fault (Apennines, Central Italy) from 36Cl surface exposure dating: evidence for strong earthquakes over the Holocene

Cited by 129 publications

References 25 publications

Preliminary results of REE-Y sorption on carbonate rocks

Preliminary results of REE-Y sorption on carbonate rocks

Principal Slip Zones in Limestone: Microstructural Characterization and Implications for the Seismic Cycle (Tre Monti Fault, Central Apennines, Italy)

Characterising the origin, nature and fate of sediment exported from catchments perturbed by active tectonics

Contact Info

Product

Resources

About