PANGAEA_736342 Late Miocene biostratigraphy of ODP Site 184-1143 (Table 1) Chen, Muhong; Wang, Rujian; Yang, Lihong; Han, Jianxiu; Lu, Jun Late Miocene biostratigraphy of ODP Site 184-1143 (Table 1) 2003 PANGAEA Dataset Supplement to: Chen, Muhong; Wang, Rujian; Yang, Lihong; Han, Jianxiu; Lu, Jun (2003): Development of east Asian summer monsoon environments in the late Miocene: radiolarian evidence from Site 1143 of ODP Leg 184. Marine Geology, 201(1-3), 169-177, https://doi.org/10.1016/S0025-3227(03)00215-9 https://doi.pangaea.de/10.1594/PANGAEA.736342 Investigator Muhong Chen Earth Science DEPTH, sediment/rock Age model Code Ageprofile Datum Description geoscientificInformation 184-1143 Composite Core Leg184 Age model, biostratigraphy Joides Resolution 1999-03-03 1999-03-10 Complete 9.36193333333333 9.36193333333333 113.285133333333 113.285133333333 274.12 m (DEPTH, sediment/rock) 510.0 m (DEPTH, sediment/rock) ODP Ocean Drilling Program unrestricted CC-BY-3.0: Creative Commons Attribution 3.0 Unported English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 33 data points text/tab-separated-values

Abundant radiolarians are preserved in the relatively complete upper Miocene section of ODP Site 1143. Three radiolarian zones, RN6, RN7 and RN8, are recognized on the basis of Diartus petterssoni (total range in RN6, <11.9-8.77 Ma), Diartus hughesi (last appearance at RN7/RN8, 7.7 Ma) and Stichocorys delmontensis (RN6 to RN8, >6.7 Ma). Variations in the abundance of radiolarians,especially Pyloniid forms,radiolarian flux and species diversity are good proxies of upwelling which,similar to today's,was likely driven by summer monsoons. These radiolarian paleomonsoon proxies indicate that the east Asian summer monsoon first initiated close to the middle/late Miocene boundary at ~12-11 Ma and reached a maximum strength at ~8.24 Ma. Therefore,the initiation of the east Asian summer monsoon was likely earlier than the first Indian monsoon,which appeared ~8 myr ago. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.736342"!

http://en.wikipedia.org/wiki/South_China_Sea South China Sea https://doi.org/10.1016/S0025-3227(03)00215-9 Development of east Asian summer monsoon environments in the late Miocene: radiolarian evidence from Site 1143 of ODP Leg 184 https://doi.org/10.2973/odp.proc.ir.184.2000 Leg184 https://www-odp.tamu.edu:443/ ODP https://www-odp.tamu.edu:443/resolutn.html Joides Resolution DIF 9.4 2026-02-06