Late Miocene provenance change on the eastern margin of the Yinggehai-Song Hong Basin, South China Sea: Evidence from U–Pb dating and Hf isotope analyses of detrital zircons

Zircon U-Pb geochronology and heavy mineral composition constraints on the provenance of the middle Miocene deep-water reservoir sedimentary rocks in the Yinggehai-Song Hong Basin, South China Sea

“…10B). Previous studies show that the provenance from Hainan has main age ranging from 110e90 Ma to 280e220 Ma on the eastern margin of the Y-SH Basin (Yan et al, 2011;Wang et al, 2015a). The sediments from modern rivers in the western Hainan also give the same results with age peaks at ca.…”

“…The previous provenance studies have illustrated that the Cenozoic sediments of the Y-SH Basin were from three major source terrains, the southern Yangtze Block (Red River), Indochina Block (central Vietnam) and Hainan Uplift (Gong et al, 1997;Brookfield, 1998;Clift and Sun, 2006;Xie, 2009;Yan et al, 2011;Wang et al, 2014bWang et al, , 2015aCao et al, 2015;Jiang et al, 2015) (Fig. 9).…”

“…The search for hydrocarbons in the strata has been hampered by a poor understanding of the sediment sources. Recently, the studies of river sediments and rocks in the potential source regions around the basin suggest that detrital zircon populations derived from the Red River are fundamentally different to those derived from central Vietnam and Hainan Island (Bodet and Sch€ arer, 2000;Hoang et al, 2009;Wang et al, 2014bWang et al, , 2015aWang et al, , 2015bJiang et al, 2015). Therefore, detrital zircon U-Pb studies could constrain the provenance of the Meishan Formation in this basin.…”

“…Although there have been detrital zircon studies of the Cenozoic sedimentary rocks of the Y-SH Basin (Yan et al, 2011;Wang et al, 2014b;Cao et al, 2015;Jiang et al, 2015;Wang et al, 2015aWang et al, , 2016b, no attempt has been made to apply the zircon geochronology and heavy minerals to the middle Miocene strata systematically. This study, we set out to document U-Pb ages of detrital zircons and heavy mineral assemblages from marine core samples to constrain the possible sediment provenance and transport pathway of the middle Miocene Meishan Formation and discuss the contribution of the source terrains.…”

Tectonic Topography Changes in Cenozoic East Asia: A Landscape Erosion‐Sediment Archive in the South China Sea

“…Sedimentary E Nd values from the Qiongdongnan Basin are also less negative than those from ODP Site 1148 and northern Taiwan, but do not show decreasing trend until 13 Ma (Figure 3b) (Yan et al, 2007). The zircon U-Pb age data are dominated by age peaks at 100-300 Ma for the lower member of the Upper Miocene, but show more older grains (>300 Ma) for the Pleistocene (Figure 9c; Wang et al, 2015). The zircon U-Pb age data are dominated by age peaks at 100-300 Ma for the lower member of the Upper Miocene, but show more older grains (>300 Ma) for the Pleistocene (Figure 9c; Wang et al, 2015).…”