Uranium Distribution and Incorporation Mechanism in Deep-Sea Corals: Implications for Seawater [CO32–] Proxies
نویسندگان
چکیده
منابع مشابه
Will human-induced changes in seawater chemistry alter the distribution of deep-sea scleractinian corals?
tion state of the world’s oceans are changing as a result of the addition of fossil fuel CO2 to the atmosphere (Kleypas et al. 1999; Feely et al. 2004; Orr et al. 2005). The pH of surface oceans has dropped by 0.1 units since the industrial revolution and if fossil fuel combustion continues at present rates, the pH of the world’s oceans will probably drop another 0.3 to 0.4 units by 2100 (Mehrb...
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The ocean is currently absorbing excess carbon from anthropogenic emissions, leading to reduced seawater-pH (termed ‘ocean acidification’). Instrumental records of ocean acidification are unavailable from well-ventilated areas of the deep ocean, necessitating proxy records to improve spatio-temporal understanding on the rate and magnitude of deep ocean acidification. Here we investigate boron, ...
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Deep-sea corals are found on hard substrates on seamounts and continental margins worldwide at depths of 300 to approximately 3,000 m. Deep-sea coral communities are hotspots of deep ocean biomass and biodiversity, providing critical habitat for fish and invertebrates. Newly applied radiocarbon age dates from the deep water proteinaceous corals Gerardia sp. and Leiopathes sp. show that radial g...
متن کاملCarbonate clumped isotope thermometry of deep-sea corals and implications for vital effects
Here we calibrate the carbonate clumped isotope thermometer in modern deep-sea corals. We examined 11 specimens of three species of deep-sea corals and one species of a surface coral spanning a total range in growth temperature of 2–25 C. External standard errors for individual measurements ranged from 0.005& to 0.011& (average: 0.0074&) which corresponds to 1–2 C. External standard errors for ...
متن کاملU-Th dating of deep-sea corals
Th, Th, U and U compositions of several deep-sea solitary corals, mainly the species Desmophyllum cristagalli, were determined by thermal ionization mass spectrometry (TIMS). It is possible to obtain high precision ages on modern pristine corals that have low [Th] (5 to a few hundred ppt). However, because older deep-sea corals tend to have higher [Th] compared to surface corals, and the initia...
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ژورنال
عنوان ژورنال: Frontiers in Earth Science
سال: 2021
ISSN: 2296-6463
DOI: 10.3389/feart.2021.641327