The University of Southampton
University of Southampton Institutional Repository
Warning ePrints Soton is experiencing an issue with some file downloads not being available. We are working hard to fix this. Please bear with us.

Glacio-eustatic variations and sapropel events as main controls on the Middle Pleistocene-Holocene evolution of the Cabliers Coral Mound Province (W Mediterranean)

Glacio-eustatic variations and sapropel events as main controls on the Middle Pleistocene-Holocene evolution of the Cabliers Coral Mound Province (W Mediterranean)
Glacio-eustatic variations and sapropel events as main controls on the Middle Pleistocene-Holocene evolution of the Cabliers Coral Mound Province (W Mediterranean)

Cold-water coral mounds are key hot-spots of deep ocean biodiversity and also important archives of past climatic conditions. Nonetheless, the paleo-oceanographic setting in which coral mounds developed in the Mediterranean Sea during the last 500 ka still needs to be properly understood. This study describes the coral deposits and corresponding ages of two on-mound gravity cores acquired from opposite sectors of the newly discovered Cabliers Coral Mound Province (CMP, Alboran Sea, W Mediterranean). U–Th data revealed Pleistocene-aged corals covering mound formation periods from >389 to 9.3 ka BP and from 13.7 to 0.3 ka BP in the southern and northern mounds respectively. The coral-rich deposits of the cores were mainly dominated by Desmophyllum pertusum, although in some sections concurrent with the Middle Pleistocene and the Holocene, other corals such as Dendrophyllia cornigera and Madrepora oculata also appeared as dominating species. Coral mound formation stages generally occurred during deglacials and temperate interstadial (3.5–4.1 δ 18O‰) periods, whereas during interglacials (<3.5 δ 18O‰) coral mound formation only occurred in the northern and shallower mound. We interpret this to indicate that the shoaling of the interface between Atlantic (AW) and Levantine Intermediate Waters (LIW) during interglacial periods prevented the corals in the southern CMP from acquiring sufficient food supply, thus causing periods of coral mound stagnation. Similarly, the interruption in LIW formation throughout sapropel events also coincides with coral mound stagnation phases. This suggests that sapropel-derived processes, which originated in the eastern Mediterranean, likely affected the entire Mediterranean basin and further supports the role of LIW as a conveyor belt facilitating cold-water coral growth in the Mediterranean Sea. Overall, we show that these coral mounds yield important insights into how local changes in oceanographic conditions can influence coral mound development.

Alboran sea, Cold-water corals, Coral mounds, Holocene, Paleoclimate, Pleistocene, Sapropels, Water mass interface
0277-3791
Corbera, Guillem
1febfc41-8f18-4d13-ab55-a56640587f81
Lo Iacono, Claudio
2ec2b5f4-a134-462b-b8ba-f7bd757040f5
Standish, Christopher D.
0b996271-da5d-4c4f-9e05-a2ec90e8561d
Anagnostou, Eleni
4527c274-f765-44ce-89ab-0e437aa3d870
Titschack, Jürgen
02548f9e-ac85-4221-bbc8-a748c975192f
Katsamenis, Orestis
8553e7c3-d860-4b7a-a883-abf6c0c4b438
Cacho, Isabel
d716f5dc-c21e-4adc-851e-9c9ebb2ee0d7
Van Rooij, David
e1d42f21-1fed-475e-b85b-2da9bc77934d
Huvenne, Veerle A.i.
f22be3e2-708c-491b-b985-a438470fa053
Foster, Gavin L.
fbaa7255-7267-4443-a55e-e2a791213022
Corbera, Guillem
1febfc41-8f18-4d13-ab55-a56640587f81
Lo Iacono, Claudio
2ec2b5f4-a134-462b-b8ba-f7bd757040f5
Standish, Christopher D.
0b996271-da5d-4c4f-9e05-a2ec90e8561d
Anagnostou, Eleni
4527c274-f765-44ce-89ab-0e437aa3d870
Titschack, Jürgen
02548f9e-ac85-4221-bbc8-a748c975192f
Katsamenis, Orestis
8553e7c3-d860-4b7a-a883-abf6c0c4b438
Cacho, Isabel
d716f5dc-c21e-4adc-851e-9c9ebb2ee0d7
Van Rooij, David
e1d42f21-1fed-475e-b85b-2da9bc77934d
Huvenne, Veerle A.i.
f22be3e2-708c-491b-b985-a438470fa053
Foster, Gavin L.
fbaa7255-7267-4443-a55e-e2a791213022

Corbera, Guillem, Lo Iacono, Claudio, Standish, Christopher D., Anagnostou, Eleni, Titschack, Jürgen, Katsamenis, Orestis, Cacho, Isabel, Van Rooij, David, Huvenne, Veerle A.i. and Foster, Gavin L. (2021) Glacio-eustatic variations and sapropel events as main controls on the Middle Pleistocene-Holocene evolution of the Cabliers Coral Mound Province (W Mediterranean). Quaternary Science Reviews, 253, [106783]. (doi:10.1016/j.quascirev.2020.106783).

Record type: Article

Abstract

Cold-water coral mounds are key hot-spots of deep ocean biodiversity and also important archives of past climatic conditions. Nonetheless, the paleo-oceanographic setting in which coral mounds developed in the Mediterranean Sea during the last 500 ka still needs to be properly understood. This study describes the coral deposits and corresponding ages of two on-mound gravity cores acquired from opposite sectors of the newly discovered Cabliers Coral Mound Province (CMP, Alboran Sea, W Mediterranean). U–Th data revealed Pleistocene-aged corals covering mound formation periods from >389 to 9.3 ka BP and from 13.7 to 0.3 ka BP in the southern and northern mounds respectively. The coral-rich deposits of the cores were mainly dominated by Desmophyllum pertusum, although in some sections concurrent with the Middle Pleistocene and the Holocene, other corals such as Dendrophyllia cornigera and Madrepora oculata also appeared as dominating species. Coral mound formation stages generally occurred during deglacials and temperate interstadial (3.5–4.1 δ 18O‰) periods, whereas during interglacials (<3.5 δ 18O‰) coral mound formation only occurred in the northern and shallower mound. We interpret this to indicate that the shoaling of the interface between Atlantic (AW) and Levantine Intermediate Waters (LIW) during interglacial periods prevented the corals in the southern CMP from acquiring sufficient food supply, thus causing periods of coral mound stagnation. Similarly, the interruption in LIW formation throughout sapropel events also coincides with coral mound stagnation phases. This suggests that sapropel-derived processes, which originated in the eastern Mediterranean, likely affected the entire Mediterranean basin and further supports the role of LIW as a conveyor belt facilitating cold-water coral growth in the Mediterranean Sea. Overall, we show that these coral mounds yield important insights into how local changes in oceanographic conditions can influence coral mound development.

This record has no associated files available for download.

More information

Accepted/In Press date: 21 December 2020
e-pub ahead of print date: 8 January 2021
Published date: 1 February 2021
Keywords: Alboran sea, Cold-water corals, Coral mounds, Holocene, Paleoclimate, Pleistocene, Sapropels, Water mass interface

Identifiers

Local EPrints ID: 446256
URI: http://eprints.soton.ac.uk/id/eprint/446256
ISSN: 0277-3791
PURE UUID: 744c5402-6f13-4b3c-8b9e-ac82ab5ad7f9
ORCID for Orestis Katsamenis: ORCID iD orcid.org/0000-0003-4367-4147
ORCID for Veerle A.i. Huvenne: ORCID iD orcid.org/0000-0001-7135-6360
ORCID for Gavin L. Foster: ORCID iD orcid.org/0000-0003-3688-9668

Catalogue record

Date deposited: 01 Feb 2021 17:33
Last modified: 26 Nov 2021 02:57

Export record

Altmetrics

Contributors

Author: Guillem Corbera
Author: Claudio Lo Iacono
Author: Eleni Anagnostou
Author: Jürgen Titschack
Author: Isabel Cacho
Author: David Van Rooij
Author: Veerle A.i. Huvenne ORCID iD
Author: Gavin L. Foster ORCID iD

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×