Carbonate sedimentology of the Propeller Mound, Northeast Atlantic

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 b...

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Bibliographic Details
Main Authors: Dorschel, Boris, Hebbeln, Dierk, Rüggeberg, Andres, Dullo, Wolf-Christian
Format: Dataset
Language:English
Published: PANGAEA 2007
Subjects:
Center for Marine Environmental Sciences
ECOMOUND
Environmental controls on mound formation along the european margin
GeoB6718-2
GeoB6719-1
GeoB6725-1
GeoB6728-1
GeoB6729-1
GeoB6730-1
Gravity corer (Kiel type)
MARUM
Porcupine Seabight
POS265
POS478-2
POS479-1
POS485-1
POS488-1
POS489-1
POS490-1
Poseidon
SL
Lophelia pertusa
Northeast Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.712028
https://doi.org/10.1594/PANGAEA.712028
Description
Summary: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.

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