FN Archimer Export Format
PT J
TI Palaeomagnetic and rock magnetic analysis of Holocene deposits from the Adriatic Sea: detecting and dating short-term fluctuations in sediment supply
BT 
AF VIGLIOTTI, L
   VEROSUB, K
   CATTANEO, Antonio
   TRINCARDI, F
   ASIOLI, A
   PIVA, A
AS 1:1;2:2;3:3;4:1;5:4;6:1;
FF 1:;2:;3:PDG-DOP-DCB-GM-LES;4:;5:;6:;
C1 ISMAR CNR, Ist Sci Marine, I-40129 Bologna, Italy.
   Univ Calif Davis, Dept Geol, Davis, CA 95616 USA.
   IFREMER, Dept Geosci Marine, F-29280 Plouzane, France.
   IGG CNR, Ist Geosci & Georisorse, Padua, Italy.
C2 ISMAR, ITALY
   UNIV CALIF DAVIS, USA
   IFREMER, FRANCE
   IGG CNR, ITALY
SI BREST
SE PDG-DOP-DCB-GM-LES
IN WOS Ifremer jusqu'en 2018
   copubli-europe
   copubli-int-hors-europe
IF 2.167
TC 18
UR https://archimer.ifremer.fr/doc/2008/publication-4208.pdf
LA English
DT Article
DE ;Holocene;Adriatic Sea;Mediterranean;Sediment cores;Continental shelf;Secular variations;Palaeomagnetism
AB We present palaeomagnetic and rock magnetic results from five cores collected in the basin of the Adriatic Sea. Four cores (PRAD2-4; KS02-246; CSS00-23 and CSS00-07) were collected along a shore-parallel transect whereas the fifth core (AMC99-01) was retrieved in the central Adriatic in 250 m water depth, on the floor of the Meso-Adriatic Depression. After alternating field demagnetization, the natural remanent magnetization (NRM) directions show a characteristic and primary magnetization of the sediments that is representative of secular variation of the geomagnetic field. By combining C-14 dating and the ages of magnetic inclination features, it has been possible to establish an age-depth model for all of the cores. Precise identification of the secular variation features provides a refined chronology that allows us to quantify short-term changes in sediment flux from the Adriatic catchment as well as changes in sediment routing within the basin. Rock magnetic parameters indicate a homogeneous magnetic mineralogy dominated by fine-grained magnetite. Variations in both concentration and grain-size related magnetic parameters reflect changes in sediment supply between glacial and interglacial stages, as well as changes in environmental conditions. Selective dissolution of magnetic grains is associated with the formation of sapropel S1 during the first part of the Holocene, although the duration of the anoxic interval varies between cores. A significant modification in sediment supply characterizes the late-Holocene deposits with a marked increase in sedimentation rate occurring during the last few centuries. We interpret this as a far-reaching response to the rapid construction of the modern Po delta under increasing anthropogenic impact.
PY 2008
SO The Holocene
SN 0959-6836
PU Sage Publications
VL 18
IS 1
UT 000254220200012
BP 141
EP 152
DI 10.1177/0959683607085605
ID 4208
ER

EF