Carbonate budget of a cold-water coral carbonate mound: Propeller Mound, Porcupine Seabight

Dorschel, Boris, Hebbeln, Dierk, Rüggeberg, Andres and Dullo, Wolf-Christian (2007) Carbonate budget of a cold-water coral carbonate mound: Propeller Mound, Porcupine Seabight International Journal of Earth Sciences, 96 (1). pp. 73-83. DOI 10.1007/s00531-005-0493-0.

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Abstract

High resolution studies from the Propeller Mound, a cold-water coral carbonate mound in the NE Atlantic, show that this mound consists of >50% carbonate justifying the name ‘carbonate mound’. Through the last ~300,000 years approximately one third of the carbonate has been contributed by cold-water corals, namely Lophelia pertusa and Madrepora oculata. This coral bound contribution to the carbonate budget of Propeller Mound is probably accompanied by an unknown portion of sediments buffered from suspension by the corals. However, extended hiatuses in Propeller Mound sequences only allow the calculation of a net carbonate accumulation. Thus, net carbonate accumulation for the last 175 kyr accounts for only <0.3 g/cm2/kyr, which is even less than for the off-mound sediments. These data imply that Propeller Mound faces burial by hemipelagic sediments as has happened to numerous buried carbonate mounds found slightly to the north of the investigated area.

Document Type: Article
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
Refereed: Yes
DOI etc.: 10.1007/s00531-005-0493-0
ISSN: 1437-3254
Projects: ECOMOUND
Date Deposited: 24 Apr 2009 13:28
Last Modified: 18 May 2017 09:08
URI: http://eprints.uni-kiel.de/id/eprint/1443

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