FN Archimer Export Format
PT J
TI Gravity-Driven Deposits in an Active Margin (Ionian Sea) Over the Last 330,000 Years
BT 
AF KONG, Eleonore
   ZARAGOSI, Sebastien
   SCHNEIDER, Jean-Luc
   GARLAN, Thierry
   BACHELERY, Patrick
   SABINE, Marjolaine
   SAN PEDRO, Laurine
AS 1:1;2:1;3:1;4:2;5:3;6:1;7:4;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 Univ Bordeaux, UMR CNRS 5805, EPOC, Allee Geoffroy St Hilaire,CS 50023, Pessac, France.
   SHOM DOPS HOM Sedimentol, 13 Rue Chatellier,CS 92803, Brest, France.
   Univ Blaise Pascal Clermont Ferrand, LMV OPGC, Campus Cezeaux,6 Ave Blaise Pascal,TSA60026, Aubiere, France.
   Univ Bretagne Occidentale, Lab Domaines Ocean, UMR 6538, IUEM, Rue Dumont Urville, Plouzane, France.
C2 UNIV BORDEAUX, FRANCE
   SHOM, FRANCE
   UNIV CLERMONT FERRAND, FRANCE
   UBO, FRANCE
UM LGO
IF 2.981
TC 2
UR https://archimer.ifremer.fr/doc/00638/75012/75691.pdf
   https://archimer.ifremer.fr/doc/00638/75012/75692.doc
LA English
DT Article
DE ;Ionian Sea;accretionary wedges;palaeoearthquakes;etna volcanism;natural hazard;turbidites
AB In the Ionian Sea, the subduction of the Nubia plate underneath the Eurasia plate leads to an important sediment remobilization on the Calabrian Arc and the Mediterranean Ridge. These events are often associated with earthquakes and tsunamis. In this study, we analyze gravity-driven deposits in order to establish their recurrence time on the Calabrian Arc and the western Mediterranean Ridge. Four gravity cores collected on ridges and slope basins of accretionary prisms record turbidites, megaturbidites, slumping and micro-faults over the last 330,000 years. These turbidites were dated by correlation with a hemipelagic core with a multi-proxy approach: radiometric dating, 18O, b* colour curve, sapropels and tephrochronology. The origin of the gravity-driven deposits was studied with a sedimentary approach: grain-size, lithology, thin section, geochemistry of volcanic glass. The results suggest three periods of presence/absence of gravity-driven deposits: a first on the western lobe of the Calabrian Arc between 330,000 and 250,000 years, a second between 120,000 years and present day on the eastern lobe of the Calabrian Arc and over the last 60,000 years on the western lobe, and a third on the Mediterranean Ridge over the last 37,000 years. Return times for gravity-driven deposits are around 1,000 years during the most important record periods. The turbidite activity also highlights the presence of volcaniclastic turbidites that seems to be link to the Etna changing morphology over the last 320,000 years. 
PY 2017
PD NOV
SO Geochemistry Geophysics Geosystems
SN 1525-2027
PU Amer Geophysical Union
VL 18
IS 11
UT 000418403800027
BP 4186
EP 4210
DI 10.1002/2017GC006950
ID 75012
ER

EF