1. Solenosmilia variabilis-bearing cold-water coral mounds off Brazil
- Author
-
André Freiwald, Wolfram Stiller, Andres Rüggeberg, André Bahr, Jürgen Titschack, Stephan Skornitzke, Silke Voigt, Anne H Osborne, Ana Luiza Spadano Albuquerque, A. Conforti, Jacek Raddatz, Agostina Vertino, Norbert Frank, and Andrea Schröder-Ritzrau more...
- Subjects
geography ,Water mass ,geography.geographical_feature_category ,Antarctic Intermediate Water ,010504 meteorology & atmospheric sciences ,biology ,Coral ,Aquatic Science ,Hemipelagic sediment ,010502 geochemistry & geophysics ,biology.organism_classification ,01 natural sciences ,Oceanography ,Lophelia ,14. Life underwater ,Glacial period ,Reef ,Solenosmilia variabilis ,Geology ,0105 earth and related environmental sciences - Abstract
Cold-water corals (CWC), dominantly Desmophyllum pertusum (previously Lophelia pertusa), and their mounds have been in the focus of marine research during the last two decades; however, little is known about the mound-forming capacity of other CWC species. Here, we present new 230Th/U age constraints of the relatively rarely studied framework-building CWC Solenosmilia variabilis from a mound structure off the Brazilian margin combined with computed tomography (CT) acquisition. Our results show that S. variabilis can also contribute to mound formation, but reveal coral-free intervals of hemipelagic sediment deposits, which is in contrast to most of the previously studied CWC mound structures. We demonstrate that S. variabilis only occurs in short episodes of more...
- Published
- 2019
- Full Text
- View/download PDF