Carbonate sedimentology of the Propeller Mound, Northeast Atlantic, supplement to: Dorschel, Boris; Hebbeln, Dierk; Rüggeberg, Andres; Dullo, Wolf-Christian (2007): Carbonate budget of a cold-water coral carbonate mound: Propeller Mound, Porcupine Seabight. International Journal of Earth Sciences, 96(1), 73-83

• Main Authors: Dorschel, Boris, Hebbeln, Dierk, Rüggeberg, Andres, Dullo, Wolf-Christian
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 2007
• Subjects: Gravity corer Kiel type; POS265; Poseidon; Center for Marine Environmental Sciences MARUM; Environmental controls on mound formation along the european margin ECOMOUND; Porcupine Seabight; Lophelia pertusa; Northeast Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.712028; https://doi.pangaea.de/10.1594/PANGAEA.712028

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. : For AMS 14C age determination see Rüggeberg et al. (2005) datasets: doi:10.1594/PANGAEA.711998, further CaCO3 data see Rüggeberg et al. (2007) datasets: doi:10.1594/PANGAEA.711838