Integrated stratigraphy and astronomical tuning of lower–middle Pleistocene Montalbano Jonico section (southern Italy)

Ciaranfi, Neri; Lirer, Fabrizio; Lirer, L.; Lourens, Lucas Joost; Maiorano, Patrizia; Marino, Maria; Petrosino, Paola; Sprovieri, Mario; Stefanelli, Simona; Brilli, Mauro; Girone, Angela; Joannin, Sébastien; Pelosi, Nicola; Vallefuoco, Mattia

doi:10.1016/j.quaint.2009.10.027

Cited by 49 publications

(65 citation statements)

References 54 publications

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“…Only three samples revealed the presence of a prevailing volcanic glass fraction, in the fraction that survived the washing pretreatment (a detailed description of laboratory procedures and analytical methodologies used for characterizing the cryptotephra is provided by Munno and Petrosino [2007] and Ciaranfi et al [2010]). The pumice fragments and glass shards making up the residual fraction were embedded in epoxy resin and polished for scanning electron microscopy (SEM) Energy Dispersion System (EDS) major-element analyses.…”

Section: Age Constraintsmentioning

confidence: 99%

A decoupled kinematic model for active normal faults: Insights from the 1980, MS = 6.9 Irpinia earthquake, southern Italy

Ascione

Mazzoli

Petrosino

et al. 2013

Geological Society of America Bulletin

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A signifi cant uncertainty exists in the defi - nition of both surface pattern and subsurface continuity (i.e., coupling vs. decoupling) of active normal faults in the Apennines. In this study, we investigated the epicentral area of the MS = 6.9, 1980 Irpinia earthquake— one of the most destructive historical earthquakes in Italy—based on detailed topography analyses, morphostratigraphic and structural data, and new age constraints from Quaternary deposits. The active tectonic behavior of the study area is controlled by a series of subparallel, mainly WNW-ESE– to NW-SE–trending, dominantly extensional faults spanning over the southern Apennines axial belt. A large part of the active fault strands is characterized by a subdued topographic expression, as a result of the young age of extensional faulting initiation, and of relatively low mean slip rates. In addition, as already known from long historical seismicity records elsewhere, long-lasting quiescence might alternate with clusters of closely spaced, strong earthquakes. The long-term morphostratigraphic record confi rms that long-lasting quiescence may punctuate fault activity, with major implications for seismic hazard assessment. The relatively smallsized cumulative fault throws estimated by surface evidence contrast with subsurface information provided by crustal-scale cross sections and seismological evidence, which both suggest the occurrence at depth of largedisplacement, mature fault zones capable of nucleating large earthquakes. Furthermore, although the surface distribution of active fault strands overlaps the belt affected by present-day low-magnitude seismicity and by large historical earthquakes, a mismatch in the attitude and kinematics of shallow versus deep faults is unraveled by a comparison of surface geological versus seismological data sets. This feature suggests a decoupling between surface and deep fault zones, and that outcropping fault planes cannot always be straightforwardly traced down to hypocentral depths, particularly in fold-andthrust belts characterized by strong rheological contrasts. On the other hand, stress inversion from outcropping active faults and from earthquake focal mechanisms indicates a general consistency of the stress fi eld, thus suggesting that a homogeneous late Quaternary extensional regime produces complex reactivation of the inherited, articulated fault network affecting different structural levels of the southern Apennine

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Section: Age Constraintsmentioning

confidence: 99%

A decoupled kinematic model for active normal faults: Insights from the 1980, MS = 6.9 Irpinia earthquake, southern Italy

Ascione

Mazzoli

Petrosino

et al. 2013

Geological Society of America Bulletin

Self Cite

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“…1). Although the candidacy of Montalbano Jonico is now in question owing to difficulties in obtaining a reliable magnetostratigraphy, the recent astronomical tuning of this section (Ciaranfi et al ., 2010) nonetheless highlights its importance.…”

Section: Introductionmentioning

confidence: 99%

A well‐established Early–Middle Pleistocene marine sequence on south‐east Zakynthos island, western Greece: Magneto‐biostratigraphic constraints and palaeoclimatic implications

Papanikolaou

Triantaphyllou

Platzman

et al. 2011

J Quaternary Science

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The chronostratigraphy of a long, onshore Early-Middle Pleistocene marine sedimentary sequence on the south-east part of Zakynthos island, Greece, is presented. Correlation of the succession with the isotope record of Ocean Drilling Program Site 963 reveals the combined influence of tectonics and eustacy in this area. The sequence is divided into three formations by two main unconformities that apparently relate to sea-level lowstands associated with two major northern hemisphere glaciations, those of marine isotope stages (MIS) 22 and 12. The Zakynthos sequence in many ways is comparable with the Italian Valle di Manche section. Magnetostratigraphic and rock magnetic analyses, supported by biostratigraphy, document the position of the Matuyama/Brunhes Chron boundary (0.77 Ma), the top and base of the Jaramillo Subchron (0.99-1.07 Ma), the Cobb Mountain Subchron (1.173-1.185 Ma) and the top of the Olduvai Subchron (1.78 Ma). The underlying strata are constrained exclusively by detailed nannofossil biostratigraphy extending at least to the lowermost Pleistocene at around 2.54 Ma and therefore certainly incorporating the base of the Olduvai Subchron (1.95 Ma) and possibly the Gauss/Matuyama Chron boundary (2.58 Ma). In addition, a remarkable increase in sedimentation rate (from 3.2 and 28 cm ka À1 to 167 cm ka À1 ) and hence resolution above the Matuyama/Brunhes boundary (Middle Pleistocene) reveals one short-lived magnetic excursion, possibly 17a (0.66 Ma), within the normal polarity Brunhes Chron.

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“…Ostracod assemblages from 40 silty-clay samples, pertaining to the sampling of the Montalbano Jonico section described and dated in Ciaranfi et al (2010), Maiorano et al (2010) and Marino et al (this volume), have been studied. The astronomical calibration of the section has been provided using the sapropel pattern, the Ar/Ar age of selected volcaniclastic layers, biostratigraphic constraints based on calcareous plankton, and oxygen isotope records (Ciaranfi et al, (Table 1) range from 65.10 to 176.10 m (864.00e740.54 ka), and belong to the uppermost part of the Lower Pleistocene and to the lower part of the Middle Pleistocene (MIS 21e18), and consequently span the Matuyama/Brunhes paleomagnetic boundary (MBB) that is located within MIS 19.…”

Section: Methodsmentioning

confidence: 99%

Lower–Middle Pleistocene ostracod assemblages from the Montalbano Jonico section (Basilicata, Southern Italy)

Aiello

Barra

Parisi

2015

Quaternary International

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Integrated stratigraphy and astronomical tuning of lower–middle Pleistocene Montalbano Jonico section (southern Italy)

Cited by 49 publications

References 54 publications

A decoupled kinematic model for active normal faults: Insights from the 1980, MS = 6.9 Irpinia earthquake, southern Italy

A decoupled kinematic model for active normal faults: Insights from the 1980, MS = 6.9 Irpinia earthquake, southern Italy

A well‐established Early–Middle Pleistocene marine sequence on south‐east Zakynthos island, western Greece: Magneto‐biostratigraphic constraints and palaeoclimatic implications

Lower–Middle Pleistocene ostracod assemblages from the Montalbano Jonico section (Basilicata, Southern Italy)

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