Planktonic Foraminifera in the Continental Slope of the Northern South China Sea during the Last 130,000 Years and Their Paleo‐Oceanographic Implications
Abstract Core V36‐06‐3, approximately 12 m long, was raised from the lower part of the continental slope of the continental South China Sea from a water depth of 2,809 m. Analyses of planktonic foraminifera, CaCO 3 content and oxygen isotopes (δ 18 O) in shells of Globigerinoides sacculifer show tha...
| Published in: | Acta Geologica Sinica-English |
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| Main Authors: | , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
1986
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1111/j.1755-6724.1986.mp60003001.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1755-6724.1986.mp60003001.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1755-6724.1986.mp60003001.x |
| Summary: | Abstract Core V36‐06‐3, approximately 12 m long, was raised from the lower part of the continental slope of the continental South China Sea from a water depth of 2,809 m. Analyses of planktonic foraminifera, CaCO 3 content and oxygen isotopes (δ 18 O) in shells of Globigerinoides sacculifer show that the trend of the sea surface‐temperature change at this site over the last 130,000 years is consistent with that in other oceans, while the expression of the dissolution cycles of calcium carbonates here is contrary to that in the Pacific Ocean but consistent with that in the Atlantic Ocean, which means that the dissolution was intense and the CaCO 3 content was slightly low during the glacial ages, but the reverse was true for the interglacial ages. The reason for this is that during the glacial ages large quantity of terrigenous detrital materials were brought into the abyssal and bathyal zones, thus diluting the calcium carbonate deposits and intensifying their dissolution. |
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