Pliocene–Quaternary contourite depositional system along the south-western Adriatic margin: changes in sedimentary stacking pattern and associated bottom currents

Claudio Pellegrini, Vittorio Maselli, Fabio Trincardi

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The Pliocene-Quaternary history of the southwestern Adriatic margin, represented by a complex contourite depositional system, records the palaeoceanography of the basin and the interactions between oceanographic processes and the uneven slope morphology that resulted from tectonic deformation. Three main stages can be recognized: (1) during the Pliocene, a giant sediment drift formed on the southern flank of the slope-transverse Gondola anticline that focused and accelerated the flow of slope-parallel bottom currents; (2) since the early to middle Pleistocene transition, a reorganization of bottom-current pathways led to a sharp change in the sedimentary architecture of the margin that became dominated by the growth of contourite deposits; (3) as of 350 ka, landward-migrating contourites on the outer shelf (less than 120 m water depth) reflect the presence of bottom currents also in shallow waters. This analysis of the sedimentary stacking pattern of the contourite depositional system that developed along the south-western Adriatic margin since the Pliocene enables disentangling the processes that controlled changes in bottom-current activity, demonstrating that bottom-current deposits constitute the bulk of depositional sequences at the Milankovitch timescale.

Original languageEnglish
Pages (from-to)67-79
Number of pages13
JournalGeo-Marine Letters
Volume36
Issue number1
Early online date29 Sep 2015
DOIs
Publication statusPublished - Feb 2016

Keywords

  • MEDITERRANEAN OUTFLOW WATER
  • SEA GENERAL-CIRCULATION
  • NORTH-ATLANTIC OCEAN
  • BARI CANYON
  • SHELF-EDGE
  • CONTINENTAL RISE
  • STOREGGA SLIDE
  • SLOPE
  • VARIABILITY
  • DRIFTS

Cite this

Pliocene–Quaternary contourite depositional system along the south-western Adriatic margin : changes in sedimentary stacking pattern and associated bottom currents. / Pellegrini, Claudio; Maselli, Vittorio; Trincardi, Fabio.

In: Geo-Marine Letters, Vol. 36, No. 1, 02.2016, p. 67-79.

Research output: Contribution to journalArticle

@article{1bc90ac33ddd480987716d2a18241c7a,
title = "Pliocene–Quaternary contourite depositional system along the south-western Adriatic margin: changes in sedimentary stacking pattern and associated bottom currents",
abstract = "The Pliocene-Quaternary history of the southwestern Adriatic margin, represented by a complex contourite depositional system, records the palaeoceanography of the basin and the interactions between oceanographic processes and the uneven slope morphology that resulted from tectonic deformation. Three main stages can be recognized: (1) during the Pliocene, a giant sediment drift formed on the southern flank of the slope-transverse Gondola anticline that focused and accelerated the flow of slope-parallel bottom currents; (2) since the early to middle Pleistocene transition, a reorganization of bottom-current pathways led to a sharp change in the sedimentary architecture of the margin that became dominated by the growth of contourite deposits; (3) as of 350 ka, landward-migrating contourites on the outer shelf (less than 120 m water depth) reflect the presence of bottom currents also in shallow waters. This analysis of the sedimentary stacking pattern of the contourite depositional system that developed along the south-western Adriatic margin since the Pliocene enables disentangling the processes that controlled changes in bottom-current activity, demonstrating that bottom-current deposits constitute the bulk of depositional sequences at the Milankovitch timescale.",
keywords = "MEDITERRANEAN OUTFLOW WATER, SEA GENERAL-CIRCULATION, NORTH-ATLANTIC OCEAN, BARI CANYON, SHELF-EDGE, CONTINENTAL RISE, STOREGGA SLIDE, SLOPE, VARIABILITY, DRIFTS",
author = "Claudio Pellegrini and Vittorio Maselli and Fabio Trincardi",
note = "We would like to thank Giovanni Bortoluzzi and Valentina Ferrante for the acquisition and processing of the multichannel seismic lines Adriaseismic 2009. We are grateful to the editors B.W. Flemming and M.T. Delafontaine for their thoughtful comments that improved the readability of the manuscript, and to A. Viana and an anonymous reviewer for their comments on an earlier version of this article. This work was funded by the Flagship Project RITMARE - The Italian Research for the Sea, coordinated by the Italian National Research Council and funded by the Italian Ministry of Education, University and Research as part of the National Research Program 2011–2013. This is ISMAR-CNR contribution number 1875.",
year = "2016",
month = "2",
doi = "10.1007/s00367-015-0424-4",
language = "English",
volume = "36",
pages = "67--79",
journal = "Geo-Marine Letters",
issn = "0276-0460",
publisher = "Springer",
number = "1",

}

TY - JOUR

T1 - Pliocene–Quaternary contourite depositional system along the south-western Adriatic margin

T2 - changes in sedimentary stacking pattern and associated bottom currents

AU - Pellegrini, Claudio

AU - Maselli, Vittorio

AU - Trincardi, Fabio

N1 - We would like to thank Giovanni Bortoluzzi and Valentina Ferrante for the acquisition and processing of the multichannel seismic lines Adriaseismic 2009. We are grateful to the editors B.W. Flemming and M.T. Delafontaine for their thoughtful comments that improved the readability of the manuscript, and to A. Viana and an anonymous reviewer for their comments on an earlier version of this article. This work was funded by the Flagship Project RITMARE - The Italian Research for the Sea, coordinated by the Italian National Research Council and funded by the Italian Ministry of Education, University and Research as part of the National Research Program 2011–2013. This is ISMAR-CNR contribution number 1875.

PY - 2016/2

Y1 - 2016/2

N2 - The Pliocene-Quaternary history of the southwestern Adriatic margin, represented by a complex contourite depositional system, records the palaeoceanography of the basin and the interactions between oceanographic processes and the uneven slope morphology that resulted from tectonic deformation. Three main stages can be recognized: (1) during the Pliocene, a giant sediment drift formed on the southern flank of the slope-transverse Gondola anticline that focused and accelerated the flow of slope-parallel bottom currents; (2) since the early to middle Pleistocene transition, a reorganization of bottom-current pathways led to a sharp change in the sedimentary architecture of the margin that became dominated by the growth of contourite deposits; (3) as of 350 ka, landward-migrating contourites on the outer shelf (less than 120 m water depth) reflect the presence of bottom currents also in shallow waters. This analysis of the sedimentary stacking pattern of the contourite depositional system that developed along the south-western Adriatic margin since the Pliocene enables disentangling the processes that controlled changes in bottom-current activity, demonstrating that bottom-current deposits constitute the bulk of depositional sequences at the Milankovitch timescale.

AB - The Pliocene-Quaternary history of the southwestern Adriatic margin, represented by a complex contourite depositional system, records the palaeoceanography of the basin and the interactions between oceanographic processes and the uneven slope morphology that resulted from tectonic deformation. Three main stages can be recognized: (1) during the Pliocene, a giant sediment drift formed on the southern flank of the slope-transverse Gondola anticline that focused and accelerated the flow of slope-parallel bottom currents; (2) since the early to middle Pleistocene transition, a reorganization of bottom-current pathways led to a sharp change in the sedimentary architecture of the margin that became dominated by the growth of contourite deposits; (3) as of 350 ka, landward-migrating contourites on the outer shelf (less than 120 m water depth) reflect the presence of bottom currents also in shallow waters. This analysis of the sedimentary stacking pattern of the contourite depositional system that developed along the south-western Adriatic margin since the Pliocene enables disentangling the processes that controlled changes in bottom-current activity, demonstrating that bottom-current deposits constitute the bulk of depositional sequences at the Milankovitch timescale.

KW - MEDITERRANEAN OUTFLOW WATER

KW - SEA GENERAL-CIRCULATION

KW - NORTH-ATLANTIC OCEAN

KW - BARI CANYON

KW - SHELF-EDGE

KW - CONTINENTAL RISE

KW - STOREGGA SLIDE

KW - SLOPE

KW - VARIABILITY

KW - DRIFTS

U2 - 10.1007/s00367-015-0424-4

DO - 10.1007/s00367-015-0424-4

M3 - Article

VL - 36

SP - 67

EP - 79

JO - Geo-Marine Letters

JF - Geo-Marine Letters

SN - 0276-0460

IS - 1

ER -