Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
High-resolution Sr/Ca records in sclerosponges calibrated to temperature in situ
Rosenheim, B.E.; Swart, P.K.; Thorrold, S.R.; Willenz, P.; Berry, L.; Latkoczy, C. (2004). High-resolution Sr/Ca records in sclerosponges calibrated to temperature in situ. Geology (Boulder Colo.) 32(2): 145-148. dx.doi.org/10.1130/G20117.1
In: Geology. Geological Society of America: Boulder. ISSN 0091-7613; e-ISSN 1943-2682
| |
Trefwoorden |
Ceratoporella nicholsoni (Hickson, 1911) [WoRMS] Marien/Kust |
Author keywords |
paleoceanography; sclerosponge; Ceratoporella nicholsoni; Sr; Ca ratios; ocean temperature; calibration |
Project | Top | Auteurs |
- Validation of alternative marine calcareous skeletons as recorders of global climate change
|
Auteurs | | Top |
- Rosenheim, B.E.
- Swart, P.K.
- Thorrold, S.R.
|
- Willenz, P.
- Berry, L.
- Latkoczy, C.
|
|
Abstract |
Ratios of strontium to calcium have been analyzed by laser-ablation inductively coupled plasma–mass spectrometry (LA-ICP-MS) in a skeletal section of the sclerosponge Ceratoporella nicholsoni. The growth period, representative of 3 yr, was stained in the skeleton with a fluorochrome (calcein). Temperatures were recorded at 2 h intervals within the shallow, cryptic reef enclosure that the sclerosponge inhabited on the northern coast of Jamaica, allowing the formulation of a direct empirical relationship between Sr/Ca and temperature. To verify this calibration, Sr/Ca ratios of two sclerosponges of the same species from depths of 67 m and 136 m in Exuma Sound, Bahamas, were analyzed by LA-ICP-MS and compared to the temperatures from these depths over a decade prior to collection. The result is an independently verified, high-resolution empirical calibration for the temperature sensitivity of Sr/Ca ratios in the aragonite skeletons of sclerosponges from Jamaica and the Bahamas. The calibration is a first for C. nicholsoni and indicates that sclerosponges are more sensitive temperature recorders than zooxanthellate corals. It represents an important step in establishing skeletal geochemistry of sclerosponges as a proxy of temperature in the upper 250 m of the ocean. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.