The non-tropical coral Cladocora caespitosa as the new climate archive for the Mediterranean: high-resolution (∼weekly) trace element systematics
作者： Paolo Montagna , Malcolm McCulloch , Claudio Mazzoli , Sergio Silenzi , Roberto Odorico
DOI: 10.1016/J.QUASCIREV.2006.09.008
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摘要: Abstract High-resolution (∼weekly) laser ablation ICP-MS trace element analyses (B, Sr, U, Mg, Ba) are reported for the scleractinian coral Cladocora caespitosa, collected from Northern Adriatic Sea. Geochemical ratios (Sr/Ca, B/Ca, Mg/Ca, U/Ca, Ba/Ca) were measured in a 38-mm long (∼10 years’ growth) external coralline portion (wall region) and generally exhibit close relationship with situ (weekly–fortnightly) data on sea surface temperature (SST), available last 6 years. In particular, B/Ca tuned to fine-scale variations SST show high degree of correlation ( r = - 0.856 , n 136 ) SST, indicate that calcification only occurs above minimum threshold 14–16 °C. addition, ranges variability larger than those typically recorded tropical corals, consistent large seasonal Adriatic. This study thus demonstrates feasibility extracting exploiting high-resolution geochemical records non-tropical corals such as C. caespitosa proxy SST.
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