New Relative Paleointensity Record of the geomagnetic field for the Holocene from the Central Adriatic Sea
Venuti A.; Florindo F.; Vigliotti L.; Negri A.; Sabbatini A.; Spagnoli F.; Morigi; C.;
A marine sequence from Central Adriatic Sea (Meson-Adriatic Depression) was analyzed by means of
paleomagnetic/rock magnetic analysis then integrated with micropaleontological data (planktonic foraminifera)
and AMS14C measurements. The core chronology of the late 3000 years was mostly based on the correlation
of paleomagnetic inclinations with those of the UK master curve and supported by radiometric data. The
chronology of the lower portion of the core was based on the occurrence of the sapropel S1 (clearly indicated
by the concentration magnetic parameters) and of the planktonic foraminifera Globorotalia inflata. Magnetic
parameters vary within the range that fulfill the criteria for a relative geomagnetic paleointensity (RPI)
study. RPI record was obtained by normalizing the intensity of natural remanent magnetization (NRM20mT)
by anhysteretic remanent magnetization (ARM20mT). The last 7000 years of the record is in good agreement
with (a) the paleointensity record reconstructed by the geomagnetic global model CALS10k.1b (Korte et
al., 2011), (b) with the regional models for Europe SCHA.DIF.3k (Pavón-Carrasco et al., 2009) and SCHA.
DIF.8K (Pavón-Carrasco et al., 2010). In addition, our record agrees with relative paleointensities from MAD
in central Adriatic Sea (new record computed using data from Vigliotti et al., 2008) and Augusta Bay in Sicily
(Sagnotti et al., 2011).
2019 - Abstract in atti di convegno
3rd International Congress on Stratigraphy, Strati2019. Milano, 2-5 luglio 2019., Milano, 2-5/7/2019
Keywords: Adriatic Sea, stratigaphy