Revised Chronology of the Sulmona Lacustrine Succession, Central Italy

Abstract

We present new stratigraphic, palaeomagnetic, 87Sr/86Sr and 40Ar/39Ar data from a lacustrine succession of the Sulmona basin, central Italy, which, according to an early study, included six unconformity‐bounded lacustrine units (from SUL6, oldest, to SUL1, youngest) spanning the interval >600 to 2 ka. The results of the present study, on the one hand confirm some of the previous conclusions, but by contrast reveal that units SUL2 and SUL1, previously attributed to the Holocene, are actually equivalent to the older SUL6 and SUL5 units – here dated to ∼814–>530 ka and ∼530–<457 ka, respectively – and that the U‐series dates previously published for both former SUL2 and SUL1 units yielded abnormally young ages. In light of the present results, a reassessment of the chronology of the Sulmona basin succession and a revision of the tephrostratigraphy of the SUL2/SUL6 and SUL1/SUL5 units is in order. Copyright © 2013 John Wiley & Sons, Ltd.

The role of drainage systems and intermontane basins in the Quaternary landscape of the Central Apennines chain (Italy)

“…In this section the main geomorphological features and distribution of the drainage systems and karst summit surfaces are presented, as well as basin fill and geomorphological features of intermontane basins, resulting from previous investigations (Capelli et al 1997;Ciccacci et al 1999;Miccadei et al 1999a, b;Cavinato et al 2002;Miccadei et al 2004;Ascione et al 2007;Boncio et al 2011;Santo et al 2014), compared with the relevant literature (Bosi and Bertini 1970;Bertini and Bosi 1993;Blumetti et al 1997Blumetti et al , 2002Bosi et al 2003;Guerrieri et al 2004;APAT 2006aAPAT , b, c, 2008Giaccio et al 2012Giaccio et al , 2013 and references therein), mostly focusing on the recording of the main stages of geomorphological evolution. The present day drainage systems of the chain are mostly composed of longitudinal tectonic valleys and fault line valleys, locally reincised into longitudinal gorges, that join the tectonic intermontane basins (Fig.…”

Hydrological variability over the Apennines during the Early Last Glacial precession minimum, as revealed by a stable isotope record from Sulmona basin, Central Italy

“…530 − <457 ka (unit SUL5) and ca. 110–14 ka (unit SUL4–3) (Giaccio et al ., , , ; Sagnotti et al ., ) (Fig. ).…”

“…Its formation was driven by the Sulmona or Morrone NW–SE‐trending fault system (Gori et al ., ; Galli et al ., ), which accommodates the deposition of a thick Quaternary succession (e.g. Cavinato et al ., ; Cavinato and Miccadei, , ; Miccadei et al ., ; Giaccio et al ., , ) (Fig. ).…”

“…Reference map (A), geological sketch of the Sulmona basin (B) and composite section of the Sulmona Pleistocene sedimentary succession (C) (compiled data from Giaccio et al ., , , , 2014; Sagnotti et al ., ; Galli et al ., ; the present study). This figure is available in colour online at wileyonlinelibrary.com.…”

CO2 Inflow and Elements Desorption Prior to a Seismic Sequence, Amatrice‐Norcia 2016, Italy

“…The accumulation of iron compounds in fault systems and their possible impact on groundwater composition, including radium and radon concentration (Szabo & Zapecza, ), has been highlighted several times in the literature (Boullier et al, ; Corrigan, ; Lipfert et al, ; Schuessler et al, ; Wang et al, ). Locally, the relationship between HFO and groundwater can be explained by an accumulation of amorphous iron hydroxide coatings on fault surfaces, or in fault gouges of the Mesozoic evaporite, rather than as a result of water‐rock interaction with tephra layers, which are locally found no deeper than ~100 m (Giaccio et al, ; Figure a). The substantially invariable strontium isotope ratio of the S1 spring (0.70791–0.70794; Figure S2) agrees with an interaction of water with Mesozoic carbonates/sulfates, rather than with Holocene ash layers (0.7083–0.7112; Figure S2; Giaccio et al, ).…”