Sedimentary patterns in the vicinity of a carbonate mound in the Hovland Mound Province, northern Porcupine Seabight
Large carbonate mound structures have been discovered in the northern Porcupine Seabight (Northeast Atlantic) at depths between 600 and 1000 m. These mounds are associated with the growth of deep-sea corals Lophelia pertusa and Madrepora oculata. In this study, three sediment cores have been analyse...
Main Authors: | , , , |
---|---|
Other Authors: | , |
Format: | Book Part |
Language: | English |
Published: |
Springer
2005
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/5750/ https://oceanrep.geomar.de/id/eprint/5750/1/Sedimentary%20patterns%20in%20the%20vicinity.pdf https://doi.org/10.1007/3-540-27673-4_5 |
id |
ftoceanrep:oai:oceanrep.geomar.de:5750 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:5750 2023-05-15T16:41:17+02:00 Sedimentary patterns in the vicinity of a carbonate mound in the Hovland Mound Province, northern Porcupine Seabight Rüggeberg, Andres Dorschel, B. Dullo, Wolf-Christian Hebbeln, D. Freiwald, A. Roberts, M. 2005 text https://oceanrep.geomar.de/id/eprint/5750/ https://oceanrep.geomar.de/id/eprint/5750/1/Sedimentary%20patterns%20in%20the%20vicinity.pdf https://doi.org/10.1007/3-540-27673-4_5 en eng Springer https://oceanrep.geomar.de/id/eprint/5750/1/Sedimentary%20patterns%20in%20the%20vicinity.pdf Rüggeberg, A., Dorschel, B., Dullo, W. C. and Hebbeln, D. (2005) Sedimentary patterns in the vicinity of a carbonate mound in the Hovland Mound Province, northern Porcupine Seabight. In: Deep-water Corals and Ecosystems. , ed. by Freiwald, A. and Roberts, M. Springer, Berlin, pp. 87-112. DOI 10.1007/3-540-27673-4_5 <https://doi.org/10.1007/3-540-27673-4_5>. doi:10.1007/3-540-27673-4_5 Book chapter NonPeerReviewed 2005 ftoceanrep https://doi.org/10.1007/3-540-27673-4_5 2023-04-07T14:51:33Z Large carbonate mound structures have been discovered in the northern Porcupine Seabight (Northeast Atlantic) at depths between 600 and 1000 m. These mounds are associated with the growth of deep-sea corals Lophelia pertusa and Madrepora oculata. In this study, three sediment cores have been analysed. They are from locations close to Propeller Mound, a 150 m high ridge-like feature covered with a cold-water coral ecosystem at its upper flanks. The investigations are concentrated on grain-size analyses, carbon measurements and on the visual description of the cores and computer tomographic images, to evaluate sediment content and structure. The cores portray the depositional history of the past ∼31 kyr BP, mainly controlled by sea-level fluctuations and the climate regime with the advance and retreat of the Irish Ice Sheet onto the Irish Mainland Shelf. A first advance of glaciers is indicated by a turbiditic release slightly older than 31 kyr BP, coherent with Heinrich event 3 deposition. During Late Marine Isotope Stage 3 (MIS 3) and MIS 2 shelf erosion prevailed with abundant gravity flows and turbidity currents. A change from glaciomarine to hemipelagic contourite sedimentation during the onset of the Holocene indicates the establishment of the strong, present-day hydrodynamic regime at intermediate depths. The general decrease in accumulation of sediments with decreasing distance towards Propeller Mound suggests that currents (turbidity currents, gravity flows, bottom currents) had a generally stronger impact on the sediment accumulation at the mound base for the past ∼31 kyr BP, respectively. Book Part Ice Sheet Lophelia pertusa Northeast Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Porcupine Seabight ENVELOPE(-13.000,-13.000,50.500,50.500) 87 112 Berlin/Heidelberg |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Large carbonate mound structures have been discovered in the northern Porcupine Seabight (Northeast Atlantic) at depths between 600 and 1000 m. These mounds are associated with the growth of deep-sea corals Lophelia pertusa and Madrepora oculata. In this study, three sediment cores have been analysed. They are from locations close to Propeller Mound, a 150 m high ridge-like feature covered with a cold-water coral ecosystem at its upper flanks. The investigations are concentrated on grain-size analyses, carbon measurements and on the visual description of the cores and computer tomographic images, to evaluate sediment content and structure. The cores portray the depositional history of the past ∼31 kyr BP, mainly controlled by sea-level fluctuations and the climate regime with the advance and retreat of the Irish Ice Sheet onto the Irish Mainland Shelf. A first advance of glaciers is indicated by a turbiditic release slightly older than 31 kyr BP, coherent with Heinrich event 3 deposition. During Late Marine Isotope Stage 3 (MIS 3) and MIS 2 shelf erosion prevailed with abundant gravity flows and turbidity currents. A change from glaciomarine to hemipelagic contourite sedimentation during the onset of the Holocene indicates the establishment of the strong, present-day hydrodynamic regime at intermediate depths. The general decrease in accumulation of sediments with decreasing distance towards Propeller Mound suggests that currents (turbidity currents, gravity flows, bottom currents) had a generally stronger impact on the sediment accumulation at the mound base for the past ∼31 kyr BP, respectively. |
author2 |
Freiwald, A. Roberts, M. |
format |
Book Part |
author |
Rüggeberg, Andres Dorschel, B. Dullo, Wolf-Christian Hebbeln, D. |
spellingShingle |
Rüggeberg, Andres Dorschel, B. Dullo, Wolf-Christian Hebbeln, D. Sedimentary patterns in the vicinity of a carbonate mound in the Hovland Mound Province, northern Porcupine Seabight |
author_facet |
Rüggeberg, Andres Dorschel, B. Dullo, Wolf-Christian Hebbeln, D. |
author_sort |
Rüggeberg, Andres |
title |
Sedimentary patterns in the vicinity of a carbonate mound in the Hovland Mound Province, northern Porcupine Seabight |
title_short |
Sedimentary patterns in the vicinity of a carbonate mound in the Hovland Mound Province, northern Porcupine Seabight |
title_full |
Sedimentary patterns in the vicinity of a carbonate mound in the Hovland Mound Province, northern Porcupine Seabight |
title_fullStr |
Sedimentary patterns in the vicinity of a carbonate mound in the Hovland Mound Province, northern Porcupine Seabight |
title_full_unstemmed |
Sedimentary patterns in the vicinity of a carbonate mound in the Hovland Mound Province, northern Porcupine Seabight |
title_sort |
sedimentary patterns in the vicinity of a carbonate mound in the hovland mound province, northern porcupine seabight |
publisher |
Springer |
publishDate |
2005 |
url |
https://oceanrep.geomar.de/id/eprint/5750/ https://oceanrep.geomar.de/id/eprint/5750/1/Sedimentary%20patterns%20in%20the%20vicinity.pdf https://doi.org/10.1007/3-540-27673-4_5 |
long_lat |
ENVELOPE(-13.000,-13.000,50.500,50.500) |
geographic |
Porcupine Seabight |
geographic_facet |
Porcupine Seabight |
genre |
Ice Sheet Lophelia pertusa Northeast Atlantic |
genre_facet |
Ice Sheet Lophelia pertusa Northeast Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/5750/1/Sedimentary%20patterns%20in%20the%20vicinity.pdf Rüggeberg, A., Dorschel, B., Dullo, W. C. and Hebbeln, D. (2005) Sedimentary patterns in the vicinity of a carbonate mound in the Hovland Mound Province, northern Porcupine Seabight. In: Deep-water Corals and Ecosystems. , ed. by Freiwald, A. and Roberts, M. Springer, Berlin, pp. 87-112. DOI 10.1007/3-540-27673-4_5 <https://doi.org/10.1007/3-540-27673-4_5>. doi:10.1007/3-540-27673-4_5 |
op_doi |
https://doi.org/10.1007/3-540-27673-4_5 |
container_start_page |
87 |
op_container_end_page |
112 |
op_publisher_place |
Berlin/Heidelberg |
_version_ |
1766031715859431424 |