Late Pliocene stable oxygen isotope and Mg/Ca record, and paleotemperature reconstructions of ODP Site 184-1143 in the South China Sea ...

• Main Authors: Tian, Jun, Pak, Dorothy K, Wang, Pinxian, Lea, David W, Cheng, Xinrong, Zhao, Quanhong
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2006
• Subjects: Composite Core; Leg184; Joides Resolution; Ocean Drilling Program ODP; Ice Sheet
• Online Access: https://dx.doi.org/10.1594/pangaea.707841; https://doi.pangaea.de/10.1594/PANGAEA.707841

The onset of Northern Hemisphere Glaciation (NHG) ~2.7 Ma ago coincided with prominent climate changes in the tropical regions such as the African and the Asian monsoons. However, the relationship between tropical and sub-tropical monsoonal variations and high northern latitude ice sheet expansion as well as processes such as late Pliocene tropical sea surface temperature (SST) change is not clear. Our late Pliocene (2.5-3.3 Ma) monsoon proxy records and Mg/Ca derived SST records at Ocean Drilling Program (ODP) Site 1143 from the southern South China Sea (SCS) reveal that while tropical SST shows a stepwise decrease of 2-3 °C during this period, the East Asian monsoon gradually strengthens in response to the onset of the NHG. At the 41-kyr and 23-kyr bands, ice volume change lags tropical SST by ~4 kyr, but leads the East Asian monsoon by ~12-17 kyr. Our finding highlights the significant role of the tropical Pacific region in driving global climate change in the late Pliocene, which has invariable leading ... : Supplement to: Tian, Jun; Pak, Dorothy K; Wang, Pinxian; Lea, David W; Cheng, Xinrong; Zhao, Quanhong (2006): Late Pliocene monsoon linkage in the tropical South China Sea. Earth and Planetary Science Letters, 252(1-2), 72-81 ...