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| Qin, B.; Li, T.; Xiong, Z.; Algeo, T. J.; Jia, Q.. |
| We present a new deep‐water carbonate ion concentration ([CO32–]) record, reconstructed from the “size‐normalized weight” (SNW) of the planktonic foraminifer Neogloboquadrina dutertrei in core MD06‐3047B, representing a mid‐depth site (2.5 km) in the western tropical Pacific since 700 ka. On glacial‐interglacial timescales, deep‐water [CO32–] exhibits an inverse relationship with global sea‐level elevations, consistent with the “coral reef hypothesis” that the deep Pacific carbonate system responded to variations in shelf‐carbonate production through the past 700 kyr. On longer timescales, a decoupling between deep‐water [CO32–] and δ13C around the globe can be explained by a combination of continental weathering and nutrient inputs. During the mid‐Brunhes... |
| Tipo: Text |
Palavras-chave: Planktonic foraminifer; Shell weight; Carbonate dissolution; Coral reef hypothesis; Carbon cycles; Ocean stratification. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00455/56619/58322.pdf |
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